Bone Cements: Adhesives used to fix prosthetic devices to bones and to cement bone to bone in difficult fractures. Synthetic resins are commonly used as cements. A mixture of monocalcium phosphate, monohydrate, alpha-tricalcium phosphate, and calcium carbonate with a sodium phosphate solution is also a useful bone paste.Polymethyl Methacrylate: Polymerized methyl methacrylate monomers which are used as sheets, moulding, extrusion powders, surface coating resins, emulsion polymers, fibers, inks, and films (From International Labor Organization, 1983). This material is also used in tooth implants, bone cements, and hard corneal contact lenses.Bone and Bones: A specialized CONNECTIVE TISSUE that is the main constituent of the SKELETON. The principle cellular component of bone is comprised of OSTEOBLASTS; OSTEOCYTES; and OSTEOCLASTS, while FIBRILLAR COLLAGENS and hydroxyapatite crystals form the BONE MATRIX.Dental Cements: Substances used to bond COMPOSITE RESINS to DENTAL ENAMEL and DENTIN. These bonding or luting agents are used in restorative dentistry, ROOT CANAL THERAPY; PROSTHODONTICS; and ORTHODONTICS.Methylmethacrylates: The methyl esters of methacrylic acid that polymerize easily and are used as tissue cements, dental materials, and absorbent for biological substances.Resin Cements: Dental cements composed either of polymethyl methacrylate or dimethacrylate, produced by mixing an acrylic monomer liquid with acrylic polymers and mineral fillers. The cement is insoluble in water and is thus resistant to fluids in the mouth, but is also irritating to the dental pulp. It is used chiefly as a luting agent for fabricated and temporary restorations. (Jablonski's Dictionary of Dentistry, 1992, p159)Vertebroplasty: Procedures to repair or stabilize vertebral fractures, especially compression fractures accomplished by injecting BONE CEMENTS into the fractured VERTEBRAE.Glass Ionomer Cements: A polymer obtained by reacting polyacrylic acid with a special anion-leachable glass (alumino-silicate). The resulting cement is more durable and tougher than others in that the materials comprising the polymer backbone do not leach out.Compressive Strength: The maximum compression a material can withstand without failure. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p427)Materials Testing: The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.Bone Remodeling: The continuous turnover of BONE MATRIX and mineral that involves first an increase in BONE RESORPTION (osteoclastic activity) and later, reactive BONE FORMATION (osteoblastic activity). The process of bone remodeling takes place in the adult skeleton at discrete foci. The process ensures the mechanical integrity of the skeleton throughout life and plays an important role in calcium HOMEOSTASIS. An imbalance in the regulation of bone remodeling's two contrasting events, bone resorption and bone formation, results in many of the metabolic bone diseases, such as OSTEOPOROSIS.Silicate Cement: A relatively hard, translucent, restorative material used primarily in anterior teeth. (From Boucher's Clinical Dental Terminology, 4th ed, p50)Methylmethacrylate: The methyl ester of methacrylic acid. It polymerizes easily to form POLYMETHYL METHACRYLATE. It is used as a bone cement.Polycarboxylate Cement: Water-soluble low-molecular-weight polymers of acrylic or methacrylic acid that form solid, insoluble products when mixed with specially prepared ZnO powder. The resulting cement adheres to dental enamel and is also used as a luting agent.Bone Density: The amount of mineral per square centimeter of BONE. This is the definition used in clinical practice. Actual bone density would be expressed in grams per milliliter. It is most frequently measured by X-RAY ABSORPTIOMETRY or TOMOGRAPHY, X RAY COMPUTED. Bone density is an important predictor for OSTEOPOROSIS.Bone Resorption: Bone loss due to osteoclastic activity.Cementation: The joining of objects by means of a cement (e.g., in fracture fixation, such as in hip arthroplasty for joining of the acetabular component to the femoral component). In dentistry, it is used for the process of attaching parts of a tooth or restorative material to a natural tooth or for the attaching of orthodontic bands to teeth by means of an adhesive.Zirconium: Zirconium. A rather rare metallic element, atomic number 40, atomic weight 91.22, symbol Zr. (From Dorland, 28th ed)Barium Sulfate: A compound used as an x-ray contrast medium that occurs in nature as the mineral barite. It is also used in various manufacturing applications and mixed into heavy concrete to serve as a radiation shield.Tensile Strength: The maximum stress a material subjected to a stretching load can withstand without tearing. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p2001)Bone Neoplasms: Tumors or cancer located in bone tissue or specific BONES.Fractures, Compression: Crumbling or smashing of cancellous BONE by forces acting parallel to the long axis of bone. It is applied particularly to vertebral body fractures (SPINAL FRACTURES). (Blauvelt and Nelson, A Manual of Orthopedic Terminology, 1994, p4)Bone Marrow: The soft tissue filling the cavities of bones. Bone marrow exists in two types, yellow and red. Yellow marrow is found in the large cavities of large bones and consists mostly of fat cells and a few primitive blood cells. Red marrow is a hematopoietic tissue and is the site of production of erythrocytes and granular leukocytes. Bone marrow is made up of a framework of connective tissue containing branching fibers with the frame being filled with marrow cells.Calcium Phosphates: Calcium salts of phosphoric acid. These compounds are frequently used as calcium supplements.Spinal Fractures: Broken bones in the vertebral column.Porosity: Condition of having pores or open spaces. This often refers to bones, bone implants, or bone cements, but can refer to the porous state of any solid substance.Gentamicins: A complex of closely related aminoglycosides obtained from MICROMONOSPORA purpurea and related species. They are broad-spectrum antibiotics, but may cause ear and kidney damage. They act to inhibit PROTEIN BIOSYNTHESIS.Bone Substitutes: Synthetic or natural materials for the replacement of bones or bone tissue. They include hard tissue replacement polymers, natural coral, hydroxyapatite, beta-tricalcium phosphate, and various other biomaterials. The bone substitutes as inert materials can be incorporated into surrounding tissue or gradually replaced by original tissue.Hardness: The mechanical property of material that determines its resistance to force. HARDNESS TESTS measure this property.Zinc Oxide-Eugenol Cement: Used as a dental cement this is mainly zinc oxide (with strengtheners and accelerators) and eugenol. (Boucher's Clinical Dental Terminology, 4th ed, p50)Bone Development: The growth and development of bones from fetus to adult. It includes two principal mechanisms of bone growth: growth in length of long bones at the epiphyseal cartilages and growth in thickness by depositing new bone (OSTEOGENESIS) with the actions of OSTEOBLASTS and OSTEOCLASTS.Emulsifying Agents: SURFACE-ACTIVE AGENTS that induce a dispersion of undissolved material throughout a liquid.Femur: The longest and largest bone of the skeleton, it is situated between the hip and the knee.Bone Diseases: Diseases of BONES.Prosthesis Failure: Malfunction of implantation shunts, valves, etc., and prosthesis loosening, migration, and breaking.Adhesiveness: A property of the surface of an object that makes it stick to another surface.Hip Prosthesis: Replacement for a hip joint.Orthopedic Equipment: Nonexpendable items used in the performance of orthopedic surgery and related therapy. They are differentiated from ORTHOTIC DEVICES, apparatus used to prevent or correct deformities in patients.Prosthesis-Related Infections: Infections resulting from the implantation of prosthetic devices. The infections may be acquired from intraoperative contamination (early) or hematogenously acquired from other sites (late).Bone Regeneration: Renewal or repair of lost bone tissue. It excludes BONY CALLUS formed after BONE FRACTURES but not yet replaced by hard bone.Acrylic ResinsPorphyria Cutanea Tarda: An autosomal dominant or acquired porphyria due to a deficiency of UROPORPHYRINOGEN DECARBOXYLASE in the LIVER. It is characterized by photosensitivity and cutaneous lesions with little or no neurologic symptoms. Type I is the acquired form and is strongly associated with liver diseases and hepatic toxicities caused by alcohol or estrogenic steroids. Type II is the familial form.Construction Materials: Supplies used in building.Microscopy, Electron, Scanning: Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.Arthroplasty, Replacement, Hip: Replacement of the hip joint.Stress, Mechanical: A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.Polymerization: Chemical reaction in which monomeric components are combined to form POLYMERS (e.g., POLYMETHYLMETHACRYLATE).Bone Transplantation: The grafting of bone from a donor site to a recipient site.Dental Bonding: An adhesion procedure for orthodontic attachments, such as plastic DENTAL CROWNS. This process usually includes the application of an adhesive material (DENTAL CEMENTS) and letting it harden in-place by light or chemical curing.Polystyrenes: Polymerized forms of styrene used as a biocompatible material, especially in dentistry. They are thermoplastic and are used as insulators, for injection molding and casting, as sheets, plates, rods, rigid forms and beads.Infusions, Spinal: The administration of medication by insertion of a tiny needle or catheter into the spinal sac or epidural cavity.Osseointegration: The growth action of bone tissue as it assimilates surgically implanted devices or prostheses to be used as either replacement parts (e.g., hip) or as anchors (e.g., endosseous dental implants).OsteomyelitisSurface Properties: Characteristics or attributes of the outer boundaries of objects, including molecules.ToluidinesBone Matrix: Extracellular substance of bone tissue consisting of COLLAGEN fibers, ground substance, and inorganic crystalline minerals and salts.Tibia: The second longest bone of the skeleton. It is located on the medial side of the lower leg, articulating with the FIBULA laterally, the TALUS distally, and the FEMUR proximally.RNA, Transfer, Asn: A transfer RNA which is specific for carrying asparagine to sites on the ribosomes in preparation for protein synthesis.Bone Marrow Transplantation: The transference of BONE MARROW from one human or animal to another for a variety of purposes including HEMATOPOIETIC STEM CELL TRANSPLANTATION or MESENCHYMAL STEM CELL TRANSPLANTATION.Anti-Bacterial Agents: Substances that reduce the growth or reproduction of BACTERIA.Self-Curing of Dental Resins: The hardening or polymerization of bonding agents (DENTAL CEMENTS) via chemical reactions, usually involving two components. This type of dental bonding uses a self-cure or dual-cure system.Spine: The spinal or vertebral column.Calcium Compounds: Inorganic compounds that contain calcium as an integral part of the molecule.Chromium Alloys: Specific alloys not less than 85% chromium and nickel or cobalt, with traces of either nickel or cobalt, molybdenum, and other substances. They are used in partial dentures, orthopedic implants, etc.Silicates: The generic term for salts derived from silica or the silicic acids. They contain silicon, oxygen, and one or more metals, and may contain hydrogen. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th Ed)Osteoblasts: Bone-forming cells which secrete an EXTRACELLULAR MATRIX. HYDROXYAPATITE crystals are then deposited into the matrix to form bone.Osteoporosis: Reduction of bone mass without alteration in the composition of bone, leading to fractures. Primary osteoporosis can be of two major types: postmenopausal osteoporosis (OSTEOPOROSIS, POSTMENOPAUSAL) and age-related or senile osteoporosis.Carboxymethylcellulose Sodium: A cellulose derivative which is a beta-(1,4)-D-glucopyranose polymer. It is used as a bulk laxative and as an emulsifier and thickener in cosmetics and pharmaceuticals and as a stabilizer for reagents.Dental Prosthesis Retention: Holding a DENTAL PROSTHESIS in place by its design, or by the use of additional devices or adhesives.Magnesium Oxide: Magnesium oxide (MgO). An inorganic compound that occurs in nature as the mineral periclase. In aqueous media combines quickly with water to form magnesium hydroxide. It is used as an antacid and mild laxative and has many nonmedicinal uses.Dental Restoration, Temporary: A prosthesis or restoration placed for a limited period, from several days to several months, which is designed to seal the tooth and maintain its position until a permanent restoration (DENTAL RESTORATION, PERMANENT) will replace it. (From Jablonski, Dictionary of Dentistry, 1992)Dental Stress Analysis: The description and measurement of the various factors that produce physical stress upon dental restorations, prostheses, or appliances, materials associated with them, or the natural oral structures.Finite Element Analysis: A computer based method of simulating or analyzing the behavior of structures or components.Spinal NeoplasmsAluminum Silicates: Any of the numerous types of clay which contain varying proportions of Al2O3 and SiO2. They are made synthetically by heating aluminum fluoride at 1000-2000 degrees C with silica and water vapor. (From Hawley's Condensed Chemical Dictionary, 11th ed)Curettage: A scraping, usually of the interior of a cavity or tract, for removal of new growth or other abnormal tissue, or to obtain material for tissue diagnosis. It is performed with a curet (curette), a spoon-shaped instrument designed for that purpose. (From Stedman, 25th ed & Dorland, 27th ed)Titanium: A dark-gray, metallic element of widespread distribution but occurring in small amounts; atomic number, 22; atomic weight, 47.90; symbol, Ti; specific gravity, 4.5; used for fixation of fractures. (Dorland, 28th ed)Cadaver: A dead body, usually a human body.Polymethacrylic Acids: Poly-2-methylpropenoic acids. Used in the manufacture of methacrylate resins and plastics in the form of pellets and granules, as absorbent for biological materials and as filters; also as biological membranes and as hydrogens. Synonyms: methylacrylate polymer; poly(methylacrylate); acrylic acid methyl ester polymer.Arthroplasty: Surgical reconstruction of a joint to relieve pain or restore motion.Bone Diseases, MetabolicEmbolism, Fat: Blocking of a blood vessel by fat deposits in the circulation. It is often seen after fractures of large bones or after administration of CORTICOSTEROIDS.Fractures, Bone: Breaks in bones.AcrylatesBisphenol A-Glycidyl Methacrylate: The reaction product of bisphenol A and glycidyl methacrylate that undergoes polymerization when exposed to ultraviolet light or mixed with a catalyst. It is used as a bond implant material and as the resin component of dental sealants and composite restorative materials.Prostheses and Implants: Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally.Drug Carriers: Forms to which substances are incorporated to improve the delivery and the effectiveness of drugs. Drug carriers are used in drug-delivery systems such as the controlled-release technology to prolong in vivo drug actions, decrease drug metabolism, and reduce drug toxicity. Carriers are also used in designs to increase the effectiveness of drug delivery to the target sites of pharmacological actions. Liposomes, albumin microspheres, soluble synthetic polymers, DNA complexes, protein-drug conjugates, and carrier erythrocytes among others have been employed as biodegradable drug carriers.Bone Morphogenetic Proteins: Bone-growth regulatory factors that are members of the transforming growth factor-beta superfamily of proteins. They are synthesized as large precursor molecules which are cleaved by proteolytic enzymes. The active form can consist of a dimer of two identical proteins or a heterodimer of two related bone morphogenetic proteins.Biocompatible Materials: Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.Osteogenesis: The process of bone formation. Histogenesis of bone including ossification.Equipment Failure Analysis: The evaluation of incidents involving the loss of function of a device. These evaluations are used for a variety of purposes such as to determine the failure rates, the causes of failures, costs of failures, and the reliability and maintainability of devices.Polystyrenes: Polymerized forms of styrene used as a biocompatible material, especially in dentistry. They are thermoplastic and are used as insulators, for injection molding and casting, as sheets, plates, rods, rigid forms and beads.Composite Resins: Synthetic resins, containing an inert filler, that are widely used in dentistry.Light-Curing of Dental Adhesives: The hardening or polymerization of bonding agents (DENTAL CEMENTS) via exposure to light.Prosthesis Design: The plan and delineation of prostheses in general or a specific prosthesis.Lumbar Vertebrae: VERTEBRAE in the region of the lower BACK below the THORACIC VERTEBRAE and above the SACRAL VERTEBRAE.Knee Prosthesis: Replacement for a knee joint.Bone Morphogenetic Protein 2: A potent osteoinductive protein that plays a critical role in the differentiation of osteoprogenitor cells into OSTEOBLASTS.Orthopedic Procedures: Procedures used to treat and correct deformities, diseases, and injuries to the MUSCULOSKELETAL SYSTEM, its articulations, and associated structures.Hip Joint: The joint that is formed by the articulation of the head of FEMUR and the ACETABULUM of the PELVIS.Crowns: A prosthetic restoration that reproduces the entire surface anatomy of the visible natural crown of a tooth. It may be partial (covering three or more surfaces of a tooth) or complete (covering all surfaces). It is made of gold or other metal, porcelain, or resin.Arthroplasty, Replacement: Partial or total replacement of a joint.Dentin: The hard portion of the tooth surrounding the pulp, covered by enamel on the crown and cementum on the root, which is harder and denser than bone but softer than enamel, and is thus readily abraded when left unprotected. (From Jablonski, Dictionary of Dentistry, 1992)Methacrylates: Acrylic acids or acrylates which are substituted in the C-2 position with a methyl group.Aluminum Compounds: Inorganic compounds that contain aluminum as an integral part of the molecule.Thoracic Vertebrae: A group of twelve VERTEBRAE connected to the ribs that support the upper trunk region.Time Factors: Elements of limited time intervals, contributing to particular results or situations.Ultrasonics: A subfield of acoustics dealing in the radio frequency range higher than acoustic SOUND waves (approximately above 20 kilohertz). Ultrasonic radiation is used therapeutically (DIATHERMY and ULTRASONIC THERAPY) to generate HEAT and to selectively destroy tissues. It is also used in diagnostics, for example, ULTRASONOGRAPHY; ECHOENCEPHALOGRAPHY; and ECHOCARDIOGRAPHY, to visually display echoes received from irradiated tissues.Dental Porcelain: A type of porcelain used in dental restorations, either jacket crowns or inlays, artificial teeth, or metal-ceramic crowns. It is essentially a mixture of particles of feldspar and quartz, the feldspar melting first and providing a glass matrix for the quartz. Dental porcelain is produced by mixing ceramic powder (a mixture of quartz, kaolin, pigments, opacifiers, a suitable flux, and other substances) with distilled water. (From Jablonski's Dictionary of Dentistry, 1992)Temporal Bone: Either of a pair of compound bones forming the lateral (left and right) surfaces and base of the skull which contains the organs of hearing. It is a large bone formed by the fusion of parts: the squamous (the flattened anterior-superior part), the tympanic (the curved anterior-inferior part), the mastoid (the irregular posterior portion), and the petrous (the part at the base of the skull).Dentin-Bonding Agents: Cements that act through infiltration and polymerization within the dentinal matrix and are used for dental restoration. They can be adhesive resins themselves, adhesion-promoting monomers, or polymerization initiators that act in concert with other agents to form a dentin-bonding system.Reoperation: A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.Ceramics: Products made by baking or firing nonmetallic minerals (clay and similar materials). In making dental restorations or parts of restorations the material is fused porcelain. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed & Boucher's Clinical Dental Terminology, 4th ed)Root Canal Filling Materials: Materials placed inside a root canal for the purpose of obturating or sealing it. The materials may be gutta-percha, silver cones, paste mixtures, or other substances. (Dorland, 28th ed, p631 & Boucher's Clinical Dental Terminology, 4th ed, p187)Resins, Synthetic: Polymers of high molecular weight which at some stage are capable of being molded and then harden to form useful components.Silver: Silver. An element with the atomic symbol Ag, atomic number 47, and atomic weight 107.87. It is a soft metal that is used medically in surgical instruments, dental prostheses, and alloys. Long-continued use of silver salts can lead to a form of poisoning known as ARGYRIA.Shear Strength: The internal resistance of a material to moving some parts of it parallel to a fixed plane, in contrast to stretching (TENSILE STRENGTH) or compression (COMPRESSIVE STRENGTH). Ionic crystals are brittle because, when subjected to shear, ions of the same charge are brought next to each other, which causes repulsion.Zinc Oxide: A mild astringent and topical protectant with some antiseptic action. It is also used in bandages, pastes, ointments, dental cements, and as a sunblock.Curing Lights, Dental: Light sources used to activate polymerization of light-cured DENTAL CEMENTS and DENTAL RESINS. Degree of cure and bond strength depends on exposure time, wavelength, and intensity of the curing light.Parietal Bone: One of a pair of irregularly shaped quadrilateral bones situated between the FRONTAL BONE and OCCIPITAL BONE, which together form the sides of the CRANIUM.Clindamycin: An antibacterial agent that is a semisynthetic analog of LINCOMYCIN.Hardness Tests: A test to determine the relative hardness of a metal, mineral, or other material according to one of several scales, such as Brinell, Mohs, Rockwell, Vickers, or Shore. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Compomers: Composite materials composed of an ion-leachable glass embedded in a polymeric matrix. They differ from GLASS IONOMER CEMENTS in that partially silanized glass particles are used to provide a direct bond to the resin matrix and the matrix is primarily formed by a light-activated, radical polymerization reaction.Post and Core Technique: Use of a metal casting, usually with a post in the pulp or root canal, designed to support and retain an artificial crown.X-Ray Microtomography: X-RAY COMPUTERIZED TOMOGRAPHY with resolution in the micrometer range.Inlays: Restorations of metal, porcelain, or plastic made to fit a cavity preparation, then cemented into the tooth. Onlays are restorations which fit into cavity preparations and overlay the occlusal surface of a tooth or teeth. Onlays are retained by frictional or mechanical factors.Particle Size: Relating to the size of solids.Alveolar Bone Loss: Resorption or wasting of the tooth-supporting bone (ALVEOLAR PROCESS) in the MAXILLA or MANDIBLE.Dental Cavity Lining: An inner coating, as of varnish or other protective substance, to cover the dental cavity wall. It is usually a resinous film-forming agent dissolved in a volatile solvent, or a suspension of calcium hydroxide in a solution of a synthetic resin. The lining seals the dentinal tubules and protects the pulp before a restoration is inserted. (Jablonski, Illustrated Dictionary of Dentistry, 1982)Surgical Procedures, Minimally Invasive: Procedures that avoid use of open, invasive surgery in favor of closed or local surgery. These generally involve use of laparoscopic devices and remote-control manipulation of instruments with indirect observation of the surgical field through an endoscope or similar device.Radioimmunodetection: Use of radiolabeled antibodies for diagnostic imaging of neoplasms. Antitumor antibodies are labeled with diverse radionuclides including iodine-131, iodine-123, indium-111, or technetium-99m and injected into the patient. Images are obtained by a scintillation camera.Calcium Hydroxide: A white powder prepared from lime that has many medical and industrial uses. It is in many dental formulations, especially for root canal filling.Dental Leakage: The seepage of fluids, debris, and micro-organisms between the walls of a prepared dental cavity and the restoration.Chemistry, Pharmaceutical: Chemistry dealing with the composition and preparation of agents having PHARMACOLOGIC ACTIONS or diagnostic use.Vancomycin: Antibacterial obtained from Streptomyces orientalis. It is a glycopeptide related to RISTOCETIN that inhibits bacterial cell wall assembly and is toxic to kidneys and the inner ear.Dental Restoration, Permanent: A restoration designed to remain in service for not less than 20 to 30 years, usually made of gold casting, cohesive gold, or amalgam. (Jablonski, Dictionary of Dentistry, 1992)Biofilms: Encrustations, formed from microbes (bacteria, algae, fungi, plankton, or protozoa) embedding in extracellular polymers, that adhere to surfaces such as teeth (DENTAL DEPOSITS); PROSTHESES AND IMPLANTS; and catheters. Biofilms are prevented from forming by treating surfaces with DENTIFRICES; DISINFECTANTS; ANTI-INFECTIVE AGENTS; and antifouling agents.Osteoclasts: A large multinuclear cell associated with the BONE RESORPTION. An odontoclast, also called cementoclast, is cytomorphologically the same as an osteoclast and is involved in CEMENTUM resorption.Apatites: A group of phosphate minerals that includes ten mineral species and has the general formula X5(YO4)3Z, where X is usually calcium or lead, Y is phosphorus or arsenic, and Z is chlorine, fluorine, or OH-. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Dental Materials: Materials used in the production of dental bases, restorations, impressions, prostheses, etc.Bone Cysts: Benign unilocular lytic areas in the proximal end of a long bone with well defined and narrow endosteal margins. The cysts contain fluid and the cyst walls may contain some giant cells. Bone cysts usually occur in males between the ages 3-15 years.

Cement migration after THR. A comparison of charnley elite and exeter femoral stems using RSA. (1/1009)

Studies using roentgen stereophotogrammetric analysis (RSA) have shown that the femoral components of cemented total hip replacements (THR) migrate distally relative to the bone, but it is not clear whether this occurs at the cement-implant or the cement-bone interface or within the cement mantle. Our aim was to determine where this migration occurred, since this has important implications for the way in which implants function and fail. Using RSA we compared for two years the migration of the tip of the stem with that of the cement restrictor for two different designs of THR, the Exeter and Charnley Elite. We have assumed that if the cement restrictor migrates, then at least part of the cement mantle also migrates. Our results have shown that the Exeter migrates distally three times faster than the Charnley Elite and at different interfaces. With the Exeter migration was at the cement-implant interface whereas with the Charnley Elite there was migration at both the cement-bone and the cement-implant interfaces.  (+info)

Induction of macrophage C-C chemokine expression by titanium alloy and bone cement particles. (2/1009)

Particulate wear debris is associated with periprosthetic inflammation and loosening in total joint arthroplasty. We tested the effects of titanium alloy (Ti-alloy) and PMMA particles on monocyte/macrophage expression of the C-C chemokines, monocyte chemoattractant protein-1 (MCP-1), monocyte inflammatory protein-1 alpha (MIP-1alpha), and regulated upon activation normal T expressed and secreted protein (RANTES). Periprosthetic granulomatous tissue was analysed for expression of macrophage chemokines by immunohistochemistry. Chemokine expression in human monocytes/macrophages exposed to Ti-alloy and PMMA particles in vitro was determined by RT-PCR, ELISA and monocyte migration. We observed MCP-1 and MIP-1alpha expression in all tissue samples from failed arthroplasties. Ti-alloy and PMMA particles increased expression of MCP-1 and MIP-1alpha in macrophages in vitro in a dose- and time-dependent manner whereas RANTES was not detected. mRNA signal levels for MCP-1 and MIP-1alpha were also observed in cells after exposure to particles. Monocyte migration was stimulated by culture medium collected from macrophages exposed to Ti-alloy and PMMA particles. Antibodies to MCP-1 and MIP-1alpha inhibited chemotactic activity of the culture medium samples. Release of C-C chemokines by macrophages in response to wear particles may contribute to chronic inflammation at the bone-implant interface in total joint arthroplasty.  (+info)

The inadequacy of standard radiographs in detecting flaws in the cement mantle. (3/1009)

Radiological assessment of the cement mantle is used routinely to determine the outcome of total hip replacement. We performed a simulated replacement arthroplasty on cadaver femora and took standard postoperative radiographs. The femora were then sectioned into 7 mm slices starting at the calcar, and high-resolution faxitron radiographs were taken of these sections. Analysis of the faxitron images showed that defects in the cement mantle were observed up to 100 times more frequently than on the standard films. We therefore encourage the search for a better technique in assessing the cement mantle.  (+info)

Total knee replacement: should it be cemented or hybrid? (4/1009)

OBJECTIVE: To compare the complication rates associated with total knee arthroplasty against the types of fixation (hybrid or cemented), using a single total knee design (the anatomic modular knee [AMK] prosthesis). DESIGN: A prospective, nonrandomized, controlled trial. SETTING: University Hospital in London, Ont., a tertiary care teaching centre. PATIENTS: Two groups made up of 484 knees in 395 patients (89 bilateral). INTERVENTIONS: In 260 knees a hybrid configuration (cemented tibia and noncemented femur) was used (group 1). In 224 knees the femoral and tibial components were cemented (group 2). All patellae were cemented in both groups. MAIN OUTCOME MEASURES: Clinical results were assessed by The Knee Society Clinical Rating Scores at 3 months, 6 months and yearly intervals. Radiographic results were determined by 3-foot standing radiographs and at each follow-up visit standing knee radiographs, lateral and skyline views. Radiographs were analysed for alignment, presence or absence of radiolucent lines or changes in the position of the implant. All reoperations and nonoperative complications were recorded. RESULTS: At an average follow-up of 4.8 years, 8 knees (1.6%) required reoperation. An analysis of the complications leading to reoperation demonstrated no difference between the 2 groups. CONCLUSIONS: There was no difference in outcome whether the femoral component was cemented or not. Medium-term results of the AMK are excellent with a very low reoperation rate.  (+info)

Massive pelvic and femoral pseudotumoral osteolysis secondary to an uncemented total hip arthroplasty. (5/1009)

A 51 year-old man developed an extensive osteolytic response to wear debris in an uncemented porous-coated total hip arthroplasty, with metal/polyethylene interface, which had been implanted eighteen years previously. This reaction, which involved the upper femur and the ilium, produced a mass which compressed the pelvic viscera.  (+info)

Pulmonary embolism caused by acrylic cement: a rare complication of percutaneous vertebroplasty. (6/1009)

A pulmonary embolus of acrylic cement was present in a 41-year-old woman with Langerhans' cell vertebral histiocytosis (LCH) after percutaneous vertebroplasty. Chest radiograph and CT confirmed pulmonary infarction and the presence of cement in the pulmonary arteries. She was treated with anticoagulants, and responded favorably. This rare complication occurred because perivertebral venous migration was not recognized during vertebroplasty. Adequate preparation of cement and biplane fluoroscopy are recommended for vertebroplasty.  (+info)

More failures of uncemented acetabular screw-rings than of cemented polyethylene cups in total hip arthroplasties. (7/1009)

The results of 498 total hip arthroplasties were prospectively studied. In 329 patients a cemented acetabular polyethylene cup was inserted. In 169 patients a threaded socket without cement was introduced. Follow-up ranged from 6 to 8 years and follow-up rate was over 90%. Of the 169 threaded sockets 8 required revision (4.7%), and 3 acetabular components were seen to be loose on X-ray. Of the cemented cups, only 2 (0.6%) required revision and none were considered loose on X-ray.  (+info)

Mid-term migration of a cemented total hip replacement assessed by radiostereometric analysis. (8/1009)

We have previously reported the short-term migration of cemented Hinek femoral components using radiostereometric analysis (RSA). We now report the mid-term migration. During the first 2 years after implantation the prosthesis subsided into varus and rotated internally. Between years 3 and 8 the prosthesis continued to rotate internally with the head moving posteriorly (0.07 mm/year, P=0.004). It also continued to fall into varus with the tip moving laterally (0.07 mm/year, P=0.04). The head (0.06 mm/year, P<0.0001), shoulder (0.04 mm/year, P=0.0001) and tip (0.04 mm/year, P=0.001) continued to migrate distally. There were two cases of failure due to aseptic loosening during the follow-up period. During the second year both of these had posterior head migration, which was abnormally rapid (>2 SD from the mean). We have demonstrated that a cemented implant has slow but significant levels of migration and rotation for at least 8 years after implantation. Our study confirms that implants with abnormally rapid posterior head migration during the second year are likely to fail.  (+info)

BACKGROUND: Although shoulder arthroplasty is an accepted treatment for osteoarthritis, loosening of the glenoid component, which mainly occurs at the bone-cement interface, remains a major concern. Presently, the mechanical effect of the cement mantel thickness on the bone-cement interface is still unclear. METHODS: Finite element analysis of a prosthetic scapula was used to evaluate the effect of cement thickness on stresses and micromotions at the bone-cement interface. The glenoid component was all-polyethylene, keeled and flat back. Cement mantel thickness was gradually increased from 0.5 to 2.0 mm. Two glenohumeral contact forces were applied: concentric and eccentric. Two extreme cases were considered for the bone-cement interface: bonded and debonded. FINDINGS: Within cement, stress increased as cement thickness decreased, reaching the fatigue limit below 1.0 mm. Bone stress was below its ultimate strength and was minimum between 1.0 and 1.5mm. Interface stress was close to the interface
A bone cement mixer having a cartridge filled with bone cement powder and a monomer well for receiving monomer liquid to be flowed into the bone cement powder. The monomer liquid flows by gravity in a stream near the outer periphery of the bone cement powder. The stream penetrates the bone cement powder and forms a partial cylinder of monomer-rich powder essentially uniformly along the height of the bone cement powder. The powder and liquid are then mechanically mixed to form bone cement.
Bone cement has been successfully used to anchor artificial joints. The bone cement delivery system is a series of medical equipment that uses bone cement for treatment. Scope of the Report: Bone cement has been successfully used to anchor artificial joints. The bone cement delivery system is a series of medical equipment that uses bone cement for treatment. Bone cement delivery systems have become popular in various types of orthopedic surgery/surgery. There are many benefits to using this device,
Bone Cement Market 2018 Global Analysis, Growth, Trends and Opportunities Research Report Forecasting to 2023. PUNE, MAHARASHTRA, INDIA, February 13, 2018 /EINPresswire.com/ - Summary. WiseGuyReports.com adds "Bone Cement Market 2018 Global Analysis, Growth, Trends and Opportunities Research Report Forecasting to 2023" reports to its database.. This report provides in depth study of "Bone Cement Market" using SWOT analysis i.e. Strength, Weakness, Opportunities and Threat to the organization. The Bone Cement Market report also provides an in-depth survey of key players in the market which is based on the various objectives of an organization such as profiling, the product outline, the quantity of production, required raw material, and the financial health of the organization.. Bone cement is used for fixation of prosthesis to living bone in orthopaedic musculoskeletal surgical procedures. Commonly referred to as PMMA (polymethylmethacrylate)In this report, 1 pcs bone cement refers to2 main ...
To prevent complication caused by leakage of bone cement injected into the vertebral body, organism damage caused by the leakage of the monomer or a non-cured component from bone cement and decrease of strength caused by insufficient curing of bone cement, in the percutaneous kyphoplasty, a leakage prevention bag for injecting and filling a bone cement is used, wherein the bad is made of a bioabsorbable material having a molecular weight of 5,000 to 500,000 and has a bag having the thickness of 10 to 800 μm, an injection tube is attached to an injection port for injecting the bone cement of the bag, the bag is inserted into a cavity formed in the vertebra body, and the bone cement is injected and filled into the bag through the tube.
Headline: Bitcoin & Blockchain Searches Exceed Trump! Blockchain Stocks Are Next!. United States Bone Cement Gun Market Production, Supply, Sales, and Demand Research Report is a systematically conducted exhaustive study of the United States Bone Cement Gun market. The aim of the United States Bone Cement Gun Industry report is to assist novice as well as seeded players in gaining astute business intelligence and make apt decisions based on it.. Detailed TOC and Charts & Tables of United States Bone Cement Gun Market Research Report available at- http://www.absolutereports.com/10428770 The analysis in the United States Bone Cement Gun Market report is of a two-fold perspective, production and sales. This commercial study encompasses detailed investigation of production, supply, sales, demand, price, cost, income and revenue on United States Bone Cement Gun Industry in Major Regions.. The report analyses the entire production and supply chain of the industry and provides information as per ...
The fracture or failure behaviours of four commercial acrylic-based bone cements have been examined in tensile, bending and compression modes, and their mechanical properties are reviewed. It was found that Palacos R-40 bone cement had high radiopaque agent concentration, with high surface hardness. It exhibited a much lower bending strength and bending modulus compared with the other three bone cements (CMW1, CMW2000 and Simplex P). The textures of tensile fracture surfaces produced were similar for the four bone cements studied. The fracture surface was fragmented by crevices, which developed through the matrix and around large undissolved polymethylmethacrylate (PMMA) beads. Three bands with different features existed on the bending fracture surfaces, with an abrupt transition between them. It appears that the agglomerates of zirconium dioxide particles are implicated in Palacos R-40 bone cement fracture surface. The examination of compressive failed specimens revealed that a yielded crack ...
0003]Polymethylmethacrylate bone cements can be mixed in suitable mixing beakers with spatulas by mixing the cement powder with the monomer liquid. This procedure is disadvantageous in that inclusions of air may be present in the cement dough thus formed and may later cause destabilization of the bone cement. For this reason, it is preferable to mix bone cement powder with the monomer liquid in vacuum mixing systems, since mixing in a vacuum removes inclusions of air from the cement dough all but completely and attains optimal cement quality (Breusch, S. J. et al., "Der Stand der Zementiertechnik in Deutschland [The State of Cementing Technology in Germany]," Z. Orthop., 137: 101-07 (1999)). Bone cements mixed in a vacuum have substantially lower porosity and thus show improved mechanical properties. A large number of vacuum cementing systems have been disclosed of which the following shall be named for exemplary purposes: U.S. Pat. Nos. 6,033,105; 5,624,184; 4,671,263; 4,973,168; 5,100,241; ...
A bone cement mixing apparatus for mixing a powder bone cement component with a liquid bone cement component includes a bowl and a lid removably secured to the bowl. The lid has a sealable liquid delivery port defined therein which is adapted to sealingly receive an outlet coupling of a liquid delivery device. The bone cement mixing apparatus also includes a crank rotatably attached to the lid and a blade positioned in the bowl. The blade is secured to the crank such that rotation of the crank causes rotation of the blade. A method for mixing bone cement is also disclosed.
Global Bone Cement & Glue Market report delineates the thorough and collective examination of Bone Cement & Glue industry during the past, present and conjecture period. All the business verticals like aggressive market situation, regional Bone Cement & Glue nearness, and improvement openings are clarified. Top players (Stryker, Zimmer Biomet, Depuy Synthes (A Part Of Johnson & Johnson), Smith & Nephew, Arthrex, Djo Global, Exactech, Teknimed, Heraeus Medical, Cryolife, Cardinal Health, Trimph) of Bone Cement & Glue industry, their business strategies, and growth opportunities are covered in this report. A report is incomplete without having the knowledge of the key players or competitors within the market. Many basic aspects build the market that drives the expansion of associate degree trade or an organization.. Get an exclusive sample of research report: Report Sample. The report analyses the Bone Cement & Glue market based on its engaging quality and venture achievability. Likewise, it ...
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Two-stage exchange with antibiotic-loaded bone cement spacers remains the gold standard for chronic periprosthetic joint infection (PJI). Rifampicin is highly efficient on stationary-phase staphylococci in biofilm; however, its addition to PMMA to manufacture spacers prevents polymerization and reduces mechanical properties. Isolation of rifampicin during polymerization by microencapsulation could allow manufacturing rifampicin-loaded bone cement maintaining elution and mechanical properties. Microcapsules of rifampicin with alginate, polyhydroxybutyratehydroxyvalerate (PHBV), ethylcellulose and stearic acid (SA) were synthesized. Alginate and PHBV microcapsules were added to bone cement and elution, compression, bending, hardness, setting time and microbiological tests were performed. Repeated measures ANOVA and Bonferroni post-hoc test were performed, considering a p,0.05 as statistical significance. Bone cement specimens containing alginate microcapsules eluted more rifampicin than PHBV ...
The Global market size of Bone cement mixers is $XX million in 2018 with XX CAGR from 2014 to 2018, and it is expected to reach $XX million by the end of 2024 with a CAGR of XX% from 2019 to 2024.. Global Bone cement mixers Market Report 2019 - Market Size, Share, Price, Trend and Forecast is a professional and in-depth study on the current state of the global Bone cement mixers industry. The key insights of the report:. Download for a sample copy of this report @ https://www.bigmarketresearch.com/request-sample/3235921?utm_source=IR&utm_medium=SS. 1.The report provides key statistics on the market status of the Bone cement mixers manufacturers and is a valuable source of guidance and direction for companies and individuals interested in the industry.. 2.The report provides a basic overview of the industry including its definition, applications and manufacturing technology.. 3.The report presents the company profile, product specifications, capacity, production value, and 2013-2018 market shares ...
A novel bone cement composed of sintered zinc-calcium-silicate phosphate and hybrid polyalkenoates has been developed. Synthesis and formulation of glass fillers, monomers and polymers as well as formulation of the cement were described. The effects of sintering, polymer content, glass powder/polymer liquid (P/L) ratio and comonomer on compressive strength (CS) and curing time (CT) were investigated. The effects of P/L ratio and comonomers on shrinkage as well as exotherm were also studied. Results show that the experimental cement was 61% higher in CS, 10% lower in diametral tensile strength, 35% lower in flexural strength, 62% less in exotherm, and 68% less in shrinkage, compared to conventional polymethylmethacrylate cement. With increasing polymer content and P/L ratio in the cement formulation CS of the cement increased but CT decreased. Curing time, shrinkage and exotherm of the cement decreased with increasing P/L ratio. It appears that this novel cement may be a potential candidate for ...
A custom made femoral component is made using the femoral cavity and an internal latex envelope as the mold. After the femoral cavity is worked into a roughly conical shape, an internal latex envelope is inserted into the cavity and filled with bone cement. An endoskeleton is inserted down the femoral cavity into the bone cement. The internal latex mold conforms to the shape of the cavity and an accurate negative of the cavity is created as the bone cement solidifies. The femoral component is pulled from the cavity and the internal latex envelope is peeled off the component. All traces of the internal latex envelope is removed from the femoral cavity and component. The femoral component is then reimplanted.
A prosthetic cement spacer for controlling the thickness of cement applied between a prosthetic insert and a support member, such as an acetabulum, includes a generally cylindrical standoff body portion fabricated from acrylic bone cement and a pointed wire concentric with said standoff body and outwardly extending from one end a sufficient length to anchor into the acetabulum bone surface. The method of use of these prosthetic cement spacers involves preparation of the acetabulum so that there is sufficient clearance space for the prosthetic cement spacers and then to insert the pointed wires into the acetabulum bone surface in an equilateral triangular arrangement thereby providing three points of contact for the prosthetic insert, such as an acetabular cup. By selecting three prosthetic cement spacers all having substantially the same standoff body height, the clearance region between the acetabulum bone surface and the acetabular cup is controlled and provides a uniform cement thickness
The standard cementing technique for total hip and knee arthroplasty (THA, TKA) was modified by interposing osteoconductive porous polycrystalline hydroxyapatite (HA) granules at the cement-bone interface to augment cement-bone bonding. Twenty-one specimens from the acetabulum and two specimens from the femur containing well-fixed bone-cement interface were retrieved five months to twenty-two years after THA and TKA with an interface bioactive bone cement technique. Histological findings were evaluated in terms of the retrieved sites, the interval between index operation and revision, patient age at retrieval and bone pathology. Dense bone ingrowth was observed in all specimens retrieved from the superior wall of the acetabulum. Cancellous bone ingrowth was observed in specimens retrieved from the infero-medial wall of the acetabulum. Connective tissue interposition and osteolysis were observed at the sites where hydroxyapatite granules were absent. Findings of bone ingrowth for the HA ...
TY - JOUR. T1 - The effect of vacuum mixing and pre-heating the femoral component on the mechanical properties of the cement mantle. AU - Baleani, M.. AU - Bialoblocka-Juszczyk, E.. AU - Engels, G. E.. AU - Viceconti, M.. PY - 2010/3. Y1 - 2010/3. N2 - We investigated the effect of pre-heating a femoral component on the porosity and strength of bone cement, with or without vacuum mixing used for total hip replacement. Cement mantles were moulded in a manner simulating clinical practice for cemented hip replacement. During polymerisation, the temperature was monitored. Specimens of cement extracted from the mantles underwent bending or fatigue tests, and were examined for porosity. Pre-heating the stem alone significantly increased the mean temperature values measured within the mantle (+14.2°C) (p ,0.001) and reduced the mean curing time (-1.5 min) (p ,0.001). The addition of vacuum mixing modulated the mean rise in the temperature of polymerisation to 11°C and reduced the mean duration of the ...
TY - CONF. T1 - Characterisation of mechanical properties of acrylic bone cement as a function of aging conditions and mixing environment. AU - Makem, Jonathan. PY - 2005/1. Y1 - 2005/1. M3 - Paper. SP - 326. EP - 335. ER - ...
F2118-14 Standard Test Method for Constant Amplitude of Force Controlled Fatigue Testing of Acrylic Bone Cement Materials constant-amplitude uniaxial tension-compression fatigue~
The cement-bone interface plays an important role in load transfer between cemented implant systems and adjacent bone, but little is known about the micromechanical behavior of this interface following in vivo service. Small samples of postmortem-retrieved cement-bone specimens from cemented total hip replacements were prepared and mechanically loaded to determine the response to tensile and compressive loading. The morphology of the cement-bone interface was quantified using a CT-based stereology approach. Laboratoryprepared specimens were used to represent immediate postoperative conditions for comparison. The stiffness and strength of the cement - bone interface from postmortem retrievals was much lower than that measured from laboratory-prepared specimens. The cement-bone interfaces from postmortem retrievals were very compliant (under tension and compression) and had a very low tensile strength (0.21±0.32 MPa). A linear regression model, including interface contact fraction and ...
PURPOSE The usual treatment in cervical nerve root compression syndrome is the ventral fusion with bone cement. We examined the influence of this interponate on the postoperative changes of the cervical spine. MATERIALS AND METHODS 33 patients were followed-up postoperatively over 6 months, who were treated with 39 ventral fusions because of cervical myelopathy. The lateral view of the cervical spine was used to measure the size of the bone cement interponate, the height of the intervertebral body space and the angle of both vertebral bodies. RESULTS There was no change on the size of the interponate. Postoperatively there was a slight enlargement of the intervertebral body space. During further follow-up examinations there was a decrease to the preoperative size because of the destruction of the endplates. Similar to this observation, there was a change of the angle in the operated segment. First there was a decrease of the angle, later an increase. 6 months postoperatively the preoperatively
In a device for injecting bone cement, the discharge direction of the bone cement after insertion of the cannula should be controllable in a certain region. This is made possible through a radial exit aperture ( 5 ) which is provided on the front end of the cannula ( 3 ). Since the cannula is inserted with the aid of a guide wire ( 1 ), it has an orifice ( 4 ) on its front end, which orifice must be closed off by means of a ball ( 15 ) prior to the injection. A plunger serves to insert the ball ( 15 ). So that the situation of the radial aperture ( 5 ) is known at all times, even with inserted cannula, the handle ( 17 ) of the cannula has an asymmetrical shape.
Orthopedic Bone Cement Market Trends, Analysis, Industry Overview and Business Research Reports. Orthopedic Bone Cement Market Syndicate Report, Share, Size and Forecast Reports - UK and US
The invention relates to surgical bone cement compositions and more particularly to bone cement compositions having aneasthetic properties, and to methods for producing analgesia.
A bone cement having a dry component including a large constituent and a small constituent. The small constituent fills a substantial volume of the interstitial spaces between the particles of the large constituent. Therefore, only a second or minor interstitial space is left remaining between the individual particles of the small constituent and the particles of the small constituent and the particles of the large constituent. Therefore, a reduced amount of a polymerizable component need be added to the dry component to form a bone cement. Such a bone cement formulation decreases the exothermic temperature of the bone cement and decreases the possibility of tissue necrosis in the implantation area.
The demand for hip and knee joint operations is increasing rapidly. Today, doctors implant almost 200,000 artificial hips and 120,000 knee joint prostheses (endoprosthetics) every year in Germany alone. Implanting artificial joints has become routine but still presents challenges, since the success of the operation depends on the secure and long-term anchoring of the prostheses in bone. Heraeus Medical has been developing specialized bone cements and the related mixing systems for many years. Now, with an innovative ready-to-use cementing system, Dr. Sebastian Vogt (Heraeus Medical) has simplified mixing and handling bone cement for doctors and surgical staff. Dr. Vogt and his team have developed a completely new, paste-like bone cement. Previously, bone cement came powdered and had to be combined with a liquid in a vacuum system, then mixed to form a homogeneous paste. Now the innovative paste-like bone cement can be applied directly to the implant site in a patients hip or knee with a ...
The aim of this work was to assess the preliminary anatomical and functional results of patients to establish prospects. Materials and method: We report here the preliminary results of a retrospective mono-centric, homogeneous and continuous series, of 21 non-cemented total hip implants, implanted from January 2011 to December 2014. The mean follow-up time was 24 months. The patients were evaluated by Harriss hip at the last follow-up. Results: The mean age of the intervention was 30 years. In our series, we observed a male predominance (60% of cases). Clinically, the Harris score varied significantly from 52.6 ± 11.4 pre-operatively to 85.1 ± 5.1 during the last follow-up visit. Among the items in the score, pain was the parameter that showed the greatest improvement. Thigh pain was observed in only one patient operated on the two sides. At the level of radiology, the femoral implant showed great stability. Bone resorption was suspected in 14 cases (66.66%), and confirmed in 4 cases (19.04%) with
Cemex Genta is a bone cement loaded with gentamicin which can be used for the fixation of artificial joint prostheses to the host bone.
Listings in Stabilizers / Stabilization Equipment, Bone Cement, Biomaterials, Depth Gages and Revenue Management / Performance Consulting in Altamonte...
Listings in Stabilizers / Stabilization Equipment, Bone Cement, Biomaterials, Depth Gages and Revenue Management / Performance Consulting in Washingto...
The effect of mixing biophesphonates on bone cement strength. Presented at: British Orthopaedic Research Society, Cardiff, UK ...
Vertebral consolidation - Accessories for mixing and injection of bone cements - G21 offers a variety of mixing and injection systems to complete its product portfolio for vertebral consolidation, ranging from basic bowls and syringes to fully sealed vacuum systems.
The Global Orthopedic Bone Cement and Casting Materials Market Research Report Forecast 2017-2021 is a valuable source of insightful data for business strategists.
Global Orthopedic Bone Cement and Casting Materials Market: This Research Report is designed with clear focus on Growth, Share, Opportunities
The motive of this strategic research report entitled Global Orthopedic Bone Cement and Casting Materials Market 2017 is to provide company officials, in
An orthopaedic bone cement mixing device comprising a mixing bowl (1) and a lid (3), said lid (3) having a handle (4) extending outwardly therefrom. A mixing paddle (7) comprising a shaft (8) and vanes (9) extending outwardly therefrom extends into the bowl (1) from the lid (3) and is anchored in a groove (10) running around the base (2) of the bowl. A step-up gear mechanism (5, 11) is provided between the paddle (7) and the lid (3) such that, as the handle (4) is rotated the lid (3) rotates, causing the paddle (7) to rotate around the bowl (1). The drive wheel (5) of the gear mechanism is also caused to rotate and drives the driven wheel (11) which causes the shaft (8) of the paddle (7) to rotate about its own axis as the paddle (7) moves around the bowl (1).
We provide detailed product mapping and analysis of various market scenarios. Our analysts are experts in providing in-depth analysis and breakdown of the business of key market leaders. We keep a close eye on recent developments and follow latest company news related to different players operating in the global Bone Cement & Glue market. This helps us to deeply analyze companies as well as the competitive landscape. Our vendor landscape analysis offers a complete study that will help you to stay on top of the competition.. Table of Contents. Report Overview: It includes the objectives and scope of the study and gives highlights of key market segments and players covered. It also includes years considered for the research study.. Executive Summary: It covers industry trends with high focus on market use cases and top market trends, market size by regions, and global market size. It also covers market share and growth rate by regions.. Key Players: Here, the report concentrates on mergers and ...
The global orthopedic bone cement market is expected to reach USD 1.1 billion by 2025, according to a new report by Grand View Research, Inc. Growing number of orthopedic
Summary This report studies Bone Cement in Global market, especially in North America, Europe, China, Japan, Southeast Asia and India, focuses on top manuf
0002]In the most general sense of the word, a cement is a binder that is a substance which sets and hardens independently, and can bind other materials together. Cements used in construction are characterized as hydraulic or non-hydraulic. The most important use of cement is the production of mortar and concrete--the bonding of natural or artificial aggregates to form a strong building material which is durable in the face of normal environmental effects. Hydraulic cements are materials which set and harden after combining with water, as a result of chemical reactions with the mixing water and, after hardening, retain strength and stability even under water. The key requirement for this is that the hydrates formed on immediate reaction with water are essentially insoluble in water. Most construction cements today are hydraulic, and most of these are based upon Portland cement, which is made primarily from limestone, certain clay minerals, and gypsum, in a high temperature process that drives off ...
In the Petroleum Industry today, downhole cement plays an important role during drilling & production operations. It is responsible for lending strength to the casing for future production, it helps in preventing collapse of the formation, as well as restricts fluid movement between permeable zones. This downhole cement however, has different problems in the field from inadequate compressive strength, early setting of slurry etc. But of all these problems, sulfate attack on downhole cement is probably the biggest one facing the industry today. Another problem in use of different cement slurries has been the traditional lack of research for cement permeability, which has the biggest influence on the degree of this sulfate attack. Thus Texas Tech University & BJ Services have thus carried out a new study in my thesis, where we have studied & analyzed how sulfates in water react with the dry cement initially by measuring this initial permeability. Thus a study has also been carried out in measuring ...
The present invention provides cement compositions that include degradable materials, and methods of using such compositions in subterranean cementing operations. An example of a method of the present invention includes: providing a cement composition that includes a hydraulic cement, and a degradable material; placing the cement composition in a subterranean formation; allowing the cement composition to set therein; and allowing the degradable material to degrade. Another example of a method of the present invention is a method of enhancing the mechanical properties of a cement composition including adding a degradable material to the cement composition and allowing the degradable material to degrade.
Purchase your copy of ASTM F451 - 16 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available online in electronic and print formats.
Nowadays, one of the most popular ways to get a more sustainable cement industry is using additions as cement replacement. However, there are many civil engineering applications in which the use of sustainable cements is not extended yet, such as special foundations, and particularly micropiles, even though the standards do not restrict the cement type to use. These elements are frequently exposed to the sulphates present in soils. The purpose of this research is to study the effects in the very long-term (until 600 days) of sulphate attack in the microstructure of micropiles grouts, prepared with ordinary Portland cement, fly ash and slag commercial cements, continuing a previous work, in which these effects were studied in the short-term. The microstructure changes have been analysed with the non-destructive impedance spectroscopy technique, mercury intrusion porosimetry and the
1 0 6 9 7 unuog nLrLn HuL LAHWHNLH March 11, 1969 M KELLY ETAL 3,432,317 HYDRAULIC CEMENT MIX CONTAINING SACCHARIDE POLYMERS Original Filed April,27, 1964 Sheet of 5 nus 2E2 .38 l 3 Q was mzifisz 8f .35 9 0 m$m883u kzmtmu mo SUN/70d N/ 77nd March 11, 1969 1 KELLY ETAL HYDRAULIC CEMENT MIX CONTAINING SACGHARIDE POLYMERS Sheet Original Filed April 27, 1964 $0 In QYkQk I nwqo dziwfiik mat 3 0 msmwtuumouad EEG. .3 $9.8: G x sSEmomQou SUN/70d N/ 77nd lNVENTURS I Q $3 3. P luv HYDRAULIC CEMENT MIX CONTAINING SACCHARIDB POLYMERS Sheet Original Filed April 27, 1964 WEQQI Mtik Q m. m k w n v n w o o T n .l E a $589 33528 I Q q .3555 S53E28 $588 3 No :6 Q66 33 m as was n86 9 0 wit l mm at 2 E 8 -dzqEfiE m mqxwuqmouim K333 6 2st 8536 kin Am & mkamzomtou mEkEq I 9. .E @328 .8 @3335: an E3. n. //V VE N TORS SON/70d N/ 770:! United States Patent ABSTRACT OF THE DISCLOSURE A hydraulic cement mix of cement, aggregate and sufiicient water to effect hydraulic setting of the cement and an additive in an amount ...
There are mainly two types of fixation to hold the prostheses in position: cemented fixation, in which fast curing bone cement is used to hold the prostheses in place, and cementless fixation, which relies on bone growing into the surface of the implant for fixation. Both of the two have their own advantages and shortcomings. Most knee replacement implants today are cemented, and normally they act very well. The stability of cemented fixation relies on the connection between the prostheses and the cement, and the adhesion between cement and bone is also very important. Cementless implants have a surface topography that is conducive to attracting new bone growth. Most are textured or coated so that the new bone actually grows into the surface of the implant. They may also use screws or pegs to stabilize the implant until bone ingrowth occurs. Since they depend on new bone growth for stability, cementless implants require a longer healing time than cemented replacements. Both of the two types implants
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rosendale cement is a natural hydraulic cement that was produced in and around rosendale, new york, beginning in 1825. from 1818 to 1970 natural cements were produced in over 70 locations in the united states and canada. more than half of the 35 million tons of natural cement produced in the united states originated with cement rock mined in ulster county, new york, in and around the town of . ...
Jun 16, 2019 · Blend at relatively low speed and be sure to blend only a small amount of cement that can be placed within working time. Start applying the hydraulic cement at the top of the crack making your way down. Press firmly the paste into place, maintaining the same amount of pressure until the cement begins to harden and the leak is stopped.. ...
Health, ...New research could offer hope for victims of the most devastating spin...Biological cements to repair burst fractures of the spine are being de...Bone cements similar to those used in joint replacement surgery are ...This type of fracture causes the vertebra to burst apart and in severe...,Engineers,developing,new,cements,to,heal,spinal,fractures,medicine,medical news today,latest medical news,medical newsletters,current medical news,latest medicine news
A prosthetic hip inserter is designed for use when implanting a hip stem with bone cement. The inserter includes an attachment device for securing and holding the hip implant prior to and during insertion into the medullary canal of the femur. The inserter includes a pressurizer carried on the end of the inserter which carries the attachment device. The pressurizer includes a seal which surrounds at least part of the outer circumference of the prosthesis to be implanted. This both prevents the escape of and application of pressure to the bone cement prior to its curing. The thickness of the seal can be used to adjust the depth of insertion of the hip implant stem.
Another term for float joint, a full-sized length of casing placed at the bottom of the casing string that is usually left full of cement on the inside to ensure that good cement remains on the outside of the bottom of the casing. If cement were not left inside the casing in this manner, the risk of overdisplacing the cement (due to improper casing volume calculations, displacement mud volume .... ...
A permeable cement composition including an aqueous slurry of a hydraulic cement which is based upon a water-immiscible dispersed fluid phase and a hollow particulate material. The hollow particulate material breaks down in the presence of the cement so as to leave voids which together with the dispersed phase create a permeable structure in the cement.
2018-4-20 · Vertical Roller Mill in Cement Industry. From:未知 Date:2018-04-13 09:26. As we all know that the vertical roller mill is one of very important powder making machines in the cement industry. Because of the high efficient and high capacity the vertical roller mill, so use the vertical roller mill to process the cement raw powder is the most suitable machine in cement industry.. ...
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The simplest way to describe an artificial hip would be to say that its a ball attached to a stem. The stem is often fastened to the open end of the femur using a glass-like polymer known as bone cement, while the ball takes the place of the original hip bones ball joint, rotating within a corresponding implant in the socket of the pelvis. Although problems can occur at that ball-and-socket interface, they can also result when the bone cement cracks, causing the stem to detach from the femur. Scientists, however, have developed a new type of nanoscale film coating, designed to keep that from happening. More ...
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A. An expansive cement is a cement that when mixed with water produces a paste that after setting increases in volume to a greater degree than does portland-cem
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For now, these two plants can produce 5 million tons of clinker annually. ACCs diversifiion strategic layout for the world not only includes the complete Meanwhile, Asia Cement was the first Taiwanese companies to invest in Chinese cement The grinding factory of YangZhou Yadong Cement Co. began operation.. Get Price ...
raw mill process in cement grinding plant . Aug 1, 2014 raw mill process in cement grinding plant, Links: mill 11 Dec 2012 cement plant horizontal raw ...
Mathey, Manojgna, Surana, Vijaya, Edwards, Mark and Nicholson, John W. (2009) A preliminary study of the release of quaternary ammonium antimicrobial compounds from acrylic bone cement. Journal of Material Science: Materials in Medicine, 20 (7). pp. 1579-1583. ISSN 0957-4530 (Print), 1573-4838 (Online) (doi:10.1007/s10856-009-3717-1) ...
SCIGRIP® IPS Weld-on Solvent Cement 4 is formulated as a blush-resistant cement for bonding acrylic (poly-methyl methacrylate) to itself SCIGRIP 4 is used extensively in sign fabrication
AL-AMOUDI, OMAR Attack on plain and blended cements exposed to aggressive sulfate environments. Attack on plain and blended cements exposed to aggressive sulfate environments.. ...
Cement Bacillus Definition - Cement bacillus is an older term for ettringite, a mineral high in sulfate calcium sulfoaluminate. It occurs naturally or...
James Hardie (Actual: 0.312-in x 8.25-in x 144-in) HardiePlank Primed Arctic White Smooth Lap Fiber Cement Siding Panel at Lowes. James Hardie fiber cement siding and trim combine beautiful design with superior performance. Enjoy the warm, natural character of wood with the
NOTICE: this is the authors version of a work that was accepted for publication in Cement and Concrete Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Cement and Concrete Research, 42(12), December 2012, DOI 10.1016/j.cemconres.2012.09.003 ...
In this webinar we will give an overview how the various innovations benefit the elemental analysis of cement and its intermediate products throughout the cement making process.
Methods and compositions for forming permeable cement sand screens in well bores are provided. The compositions are basically comprised of a hydraulic cement, a particulate cross-linked gel containing an internal breaker which after time causes the gel to break into a liquid and water present in an amount sufficient to form a slurry.
... - yesterday standing in the balcony i inoticed some empty cement pots.they just occupied the space and dont add anything to the scenic beauty while there were some earthen pot on the ground with plant...
Definition of Intercellular cement with photos and pictures, translations, sample usage, and additional links for more information.
AccessGUDID - IntraBlock™ TwinStem™ (04048266003737)- IntraBlock™ TwinStem™ non-cemented size 10.00 Standard 12/14 TiAl6V4 ELI TPS-Coating sterile
Considering his once mangled lower left leg has been put back together with 13 screws, bone cement and a hip bone taken from a cadaver, downhiller Manuel Osborne-Paradis return to the piste could rank among the great ski racing comebacks of all time.
Though dry process cement plants are advantageous over wet process plants Belt-to-belt transfer chute design using DEM technology; Troubleshooting of Materials handled are often dusty, cause abrasive wear of equipment, and stick in Get Price ...
cement definition: A building product produced by grinding calcined limestone and clay to an excellent powder, that could be blended with water and poured to set as an excellent size or used as an ingredient…
The report analyzes the Global Cement Industry size (volume and value) and industry chain structure published through its high quality database.
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Shillong, Nov. 29: The high-level committee constituted by the Meghalaya government to probe whether cement plants in Jaintia Hills district have violated environmental norms has submitted its findings on November 25.
What do we know about cement?: How it flows, the proper amount and how hydraulic forces can lead to both hard and soft tissue destruction. Furthermore, how should we mitigate the risks of using cement?. This presentation will discuss why residual cement is considered a risk factor... ...
The main idea of the article is to present the recent development in probabilistic computational micromechanics of composite materials. The main...
FLSmidth Institute is the leading supplier of training within the cement and minerals industry. We supply training for every step of the cement and minerals process, maintenance and production, and customized for our customers needs.
The Woodlands, TX (PRWEB) September 25, 2012 -- Rigaku Corporation is pleased to announce the publication of a new application report on the Rigaku
Weatherford is an oil and gas service company with a presence in every major oil and gas region of the world. Our business is helping our clients to safely and Check price ...
The grey side is the top of the dens sheild. yes I use it as an unerlayment. It works fine. In fact I have an exposed edge to the stirs that gets hammered & it is holding up just fine. Its only been waiting 3 years to be finished so I see no need to be in a hurry. As for is it an advantage for home owners, I recomend it in the classes I teach. The simp;e reason is it is easier to handle & dosent make as much of a mess. I use it where ever I can. The only time I use cement board is when I need a minimalsize in the backer/underlayment.. ...
Although poly(methylmethacrylate) (PMMA) cements are widely used in orthopaedics, they have numerous drawbacks. This study aimed to improve their bioactivity and osseointegration by incorporating strontium-containing borate bioactive glass (SrBG) as the reinforcement phase and bioactive filler of PMMA cement. The prepared SrBG/PMMA composite cements showed significantly decreased polymerization temperature when compared with PMMA and retained properties of appropriate setting time and high mechanical strength. The bioactivity of SrBG/PMMA composite cements was confirmed in vitro, evidenced by ion release (Ca, P, B and Sr) from SrBG particles. The cellular responses of MC3T3-E1 cells in vitro demonstrated that SrBG incorporation could promote adhesion, migration, proliferation and collagen secretion of cells. Furthermore, our in vivo investigation revealed that SrBG/PMMA composite cements presented better osseointegration than PMMA bone cement. SrBG in the composite cement could stimulate new-bone
The gold standard for bone replacement today, autologous bone, suffers from several disadvantages, such as the increased risk of infection due to the need for two surgeries. Degradable synthetic materials with properties similar to bone, such as calcium phosphate cements, are a promising alternative. Calcium phosphate cements are suited for a limited amount of applications and improving their physical properties could extend their use into areas previously not considered possible. For example, cement with increased strength could be used as load bearing support in selected applications. The focus of this thesis is, therefore, on how the physical properties of acidic calcium phosphate cements (brushite cements) are affected by compositional variations, with the ultimate aim of making it possible to formulate brushite cements with desired properties.. In this thesis a method to measure the porosity of a cement was developed. This method is advantageous over existing methods as it is easy to use, ...
The gold standard for bone replacement today, autologous bone, suffers from several disadvantages, such as the increased risk of infection due to the need for two surgeries. Degradable synthetic materials with properties similar to bone, such as calcium phosphate cements, are a promising alternative. Calcium phosphate cements are suited for a limited amount of applications and improving their physical properties could extend their use into areas previously not considered possible. For example, cement with increased strength could be used as load bearing support in selected applications. The focus of this thesis is, therefore, on how the physical properties of acidic calcium phosphate cements (brushite cements) are affected by compositional variations, with the ultimate aim of making it possible to formulate brushite cements with desired properties.. In this thesis a method to measure the porosity of a cement was developed. This method is advantageous over existing methods as it is easy to use, ...
Has bone cement in a procedure failed requiring revision surgery? Suffered from Bone Cement Implantation Syndrome? Lawyers handling bone cement lawsuits.
Ball Mills Cement Factory For Clinker Mixing , Crusher ... cement factory for clinker mixing , ® Crusher. Heavy Industry(shanghai) is the best cement factory for clinker mixing manufacturers and suppliers ... » Request a quotation. Cement mill,Cement mill price,Raw material mill,China ... The Handling Materials and Application of Cement Mill: Cement mill is widely used for the cement, the silicate product, new type building material, fire-proof ... » Request a quotation. UNITED STATES PORTLAND CEMENT PLANTS UNITED STATES PORTLAND CEMENT PLANTS (Ranked by size, ... RC Cement Company, Inc. - Festus, MO Essroc Cement Corp. - Nazareth, PA Texas Industries - Oro Grande, CA » Request a quotation. Cement production line,Cement making plant,Cement ... The Major Equipment of Cement Production Line: The main equipment of cement production line are vibrating feeder, jaw crusher, impact crusher, cement ball mill, lifer ... » Request a quotation. Chapter 1 - Introduction to Cement Production Chapter 1 - ...
Kerrier calcium sulfate beads are fully absorbable unlike PMMA bone cement and have clear advantages over commercial Plaster of Paris (POP). Order online today.
Calcium phosphate cements are used in medicine to fill bone defects or give support to screws and plates in fracture fixation. The cements are formed via mixing a powder with water and the mixture harden through a dissolution-precipitation reaction. Today the cement mixing is performed in the operating room and consists of several complicated steps that need to be performed under sterile conditions. This renders the mixing a risk factor, potentially leading to harm for the patient e.g. unsatisfactory healing or infection. To reduce this risk, premixed cements have been developed using glycerol as mixing liquid. The premixed cement sets when it is exposed to body liquids. Therefore, premixed cement can be delivered to the operating room in prefilled syringes ready for use, thus eliminating the mixing step.. The aim of this thesis is to describe differences between premixed and water-mixed cements and their advantages and drawbacks. The differences will be discussed based on results obtained from ...
Bioceramics 19: The Effect of Lif-Maleic Acid Added Calcium Aluminate Bone Cement and Ca-PMMA Composite Bone Cement on Bone Regeneration in Rat Calvarial Defects
Calcium phosphate cements (CPC) are well-established bone replacement materials that have been used in dentistry and orthopedics for more than 25 years. The monitoring of bone cements and the associated healing processes in the human body is difficult and so far has often been achieved using cytotoxic X-ray contrast agent additives. These additives have a negative effect on the mechanical properties and setting time of the bone cement. In this paper, we present a novel approach to prepare contrastive CPC by the incorporation of luminescent Eu3+-doped hydroxyapatite (Eu:HAp) nanoparticles. Eu-doped CPC (Eu:CPC) exhibited enhanced mechanical properties compared to pure CPC. Furthermore, the red photoluminescence of Eu:CPC may allow the observation of CPC-related healing processes without the use of harmful ionizing radiation.
Characterization of the intricate pore structure of calcium phosphate cements is a key step to successfully link the structural properties of these synthetic bone grafts with their most relevant properties, such as in vitro or in vivo behaviour, drug loading and release properties, or degradation over time. This is a challenging task due to the wide range of pore sizes in calcium phosphate cements, compared to most other ceramic biomaterials. This work provides a critical assessment of three different techniques based on different physical phenomena, namely mercury intrusion porosimetry (MIP), Nitrogen sorption, and thermoporometry (TPM) for the detailed characterization of four calcium phosphate cements with different textural properties in terms of total porosity, pore size distribution (PSD), and pore entrance size distribution (PESD). MIP covers a much wider size range than TPM and Nitrogen sorption, offering more comprehensive information at the micrometer level. TPM, and especially ...
Anselmetti, Giovanni Carlo (June 2010). "Osteoplasty: Percutaneous Bone Cement Injection beyond the Spine". US National Library ... It is the surgical alteration or reshaping of bone. It may be used to relieve pain associated with metastatic bone disease.[ ... Osteoplasty is the branch of surgery concerned with bone repair or bone grafting. ... Percutaneous osteoplasty involves the use of bone cement to reduce pain and improve mobility. Resection osteoplasty is used in ...
The haversian canal contains the bone's blood supplies. The boundary of an osteon is the cement line. Each haversian canal is ... Haversian canals Cortical bone (compact bone) Cancellous bone (spongy bone containing ) "Osteon," Encyclopædia Britannica ... Journal of Bone and Joint Surgery, 48:1239-1271. Martiniaková, Monika 2006 Differences in bone microstructure of mammalian ... www.trinity.edu/stonily/bone/intro2.htm Bone [dead link] - BioWeb at University of Wisconsin System Histology of osteons video ...
... "splint bones". They are the remnants of the second and the fourth toe. Modern horses retain the splint bones; they are often ... Eohippus, with left forefoot (third metacarpal colored) and tooth (a enamel; b dentin; c cement) detailed ... William Clark's 1807 expedition to Big Bone Lick found "leg and foot bones of the Horses", which were included with other ... However, all of the major leg bones were unfused, leaving the legs flexible and rotatable. Its wrist and hock joints were low ...
Ossicular reconstruction: hydroxyapatite bone cement versus incus remodelling. European Archives of Oto-Rhino-Laryngology. 2011 ... 脚:跗骨(跟骨(英语:Calcaneus)、距骨、舟骨(英语:Navicular bone)、楔状骨、骰骨(英语:Cuboid bone)) ... 耳硬化症(英语:Otosclerosis)(Otosclerosis)是一種先天性或自發性的疾病,患者內耳發
... to immobilize broken bones, or for metal casting). Mixed with polymers, it has been used as a bone repair cement. Small amounts ... a b Taylor H.F.W. (1990) Cement Chemistry. Academic Press, ISBN 0-12-683900-X, pp. 186-187. ... In flue-gas desulfurization, exhaust gases from fossil-fuel power stations and other processes (e.g. cement manufacture) are ... a mineral phase essential in cement clinker production.[11] ...
... to immobilize broken bones, or for metal casting). Mixed with polymers, it has been used as a bone repair cement. Small amounts ... Taylor H.F.W. (1990) Cement Chemistry. Academic Press, ISBN 0-12-683900-X, pp. 186-187. About tofu coagulant. Retrieved 9 Jan. ... cement manufacture) are scrubbed to reduce their sulfur oxide content, by injecting finely ground limestone or lime. This ... a mineral phase essential in cement clinker production. CaSO4 + SiO2 → CaSiO3 + SO3 When sold at the anhydrous state as a ...
The basin is made of cement and tile. The dimensions of the sculpture are 9'6" × 4' × 4'. The dimensions of the fountain basin ... Instruments consist of saxophones, sousaphones, trombones, trumpets, and tubas. The sculpture sits in a fountain basin, which ...
4-7-year stereoradiographic follow-up of 84 cemented prostheses". The Journal of Bone and Joint Surgery. British Volume. 76 (6 ... Two synchronised x-ray foci are used to obtain a stereo image of the bone and the prosthesis. The positions of the foci are ... To achieve the high accuracy, the following steps are carried out: Small radio opaque markers are introduced in the bone and ... The coordinates of the bone and prosthesis markers are accurately measured and the three-dimensional position of the markers is ...
A cement line demarcates articular calcified cartilage from subchondral bones. Once damaged, cartilage has limited repair ... Adult articular calcified cartilage is penetrated by vascular buds, and new bone produced in the vascular space in a process ... Bone morphogenetic proteins are growth factors released during embryonic development to induce condensation and determination ... Adult hyaline articular cartilage is progressively mineralized at the junction between cartilage and bone. It is then termed ...
He had the tumour cut out, with the hole filled up with bone cement. In 2016, he joined the Wests Tigers. In round 15, ... After initially playing from the bench, he cemented a position starting at lock for the last 6 games of the year. In August, ...
Loosening of the components: the bond between the bone and the components or the cement may break down or fatigue. As a result ... cement. Alternative techniques exist that affix the implant without cement. These cement-less techniques may involve ... The ends of these bones are then accurately cut to shape using cutting guides oriented to the long axis of the bones. The ... the component moves inside the bone, causing pain. Fragments of wear debris may cause an inflammatory reaction with bone ...
"Technological issues for the development of more efficient calcium phosphate bone cements: A critical assessment". Biomaterials ... is a component used in the formation of some hydroxyapatite calcium phosphate cements that used for the repair of bone defects ... One example of a hydroxyapatite cement forming reaction is that of tetracalcium phosphate and dicalcium diphosphate dihydrate: ... Tetracalcium phosphate is a component in some calcium phosphate cements that have medical applications. Tetracalcium phosphate ...
The pin was held in place by an organic resin, analogous to modern bone cement. By doing so, those who performed the operation ...
DTA may be used in cement chemistry, mineralogical research and in environmental studies. DTA curves may also be used to date ... "The application of differential thermal analysis and thermogravimetric analysis to dating bone remains". Journal of Forensic ... Ramachandran V.S. "Applications of differential thermal analysis in cement chemistry". Chap. V, Chemical Publishing Co., Inc., ... bone remains or to study archaeological materials. Using DTA one can obtain liquidus & solidus lines of phase diagrams. ...
While time hardens cement, at this age, it does not heal bones'". Rediff.com. "K S Sudarshan: Born into RSS". Rediff.com. " ...
Faust, using bones bought in Paris, recreates the demonic Blue Devil. In short order, Blue Devil steals Nebiros' trident and ... A blast from Firestorm turns the water in the demon's body into cement, seemingly killing him. Nebiros obtained Blue Devil's ...
Many different types of glue held these sections together, most commonly Irish glue and bone glue. This was until hilton glue, ... or cement glue, was introduced because of its waterproof qualities. Even today, Tonkin split-bamboo rods are still popular in ...
The bones were crushed on cement with mallets and added to the ashes. These were transported every night in sacks made of ... Eventually, the camp authorities bought a bone-crushing machine (Knochenmühle) from Schriever and Co. in Hamburg to speed up ...
They cemented their stem cell theory and in 1963 published their results in Nature.[2] In the same year, in collaboration with ... They observed that small raised lumps grew on the spleens of the mice, in proportion to the number of bone marrow cells ... In the early 1960s, McCulloch and Till started a series of experiments that involved injecting bone marrow cells into ... "A direct measurement of the radiation sensitivity of normal mouse bone marrow cells". Radiation Research. 14 (2): 213-22. doi ...
Osteoporosis Vertebral Augmentation With a Novel Vessel-X Bone Void Filling Container System and Bioactive Bone Cement. ... This channel is used to deliver the PTFE bag within which the injected bone cement will reside. Once the bag is introduced, ... acrylic bone cement is injected until the vertebrae is judged to be restored to its near original height. Vesselplasty solves ... Using a bone access needle the vertebra is drilled in order to make a channel through the vertebral arch pedicle. ...
But this construction did not use iron or bone braces, and built with bricks and cement only. In 1983, Banda Aceh was rocked by ...
During the Tiwah ceremony, the bones of the dead are dug from the cemetery and carried back to the village. The bones will be ... Since the mid-1960s, the increasing availability of cements means that cement ossuaries are becoming more popular. These are ... Some sandung are built to contain the bones of a single individual, while others for fifty or more persons. In general, the ... Fragments of tile and mirror are pressed into the drying cement to decorate it. As more Dayak people adopt Christianity or ...
Heraeus Medical, a division of Heraeus, the manufacturer of Palacos® bone cement, is also located in Wehrheim. Wehrheim has one ...
... both of which were fixed to the bone using PMMA (acrylic) bone cement. For over two decades, the Charnley Low Friction ... He found that joint surfaces could be replaced by implants cemented to the bone. His design consisted of a stainless steel one- ... Thomas became interested in orthopedics and bone-setting at a young age and, after establishing his own practice, went on to ... This type of operation delays the need for the more traditional and less bone-conserving total hip replacement, but carries ...
firm to pay $23M for illegal bone cement tests". Yahoo News/Associated Press. Retrieved 2010-10-05. "Synthes acquires U.S. ... According to the indictment, before the marketing program began, pilot studies showed the company that the bone cement reacted ... In October 2010, Synthes and its subsidiary Norian both plead guilty to crimes relating to illegally implanting bone cement ... In 2009 the U.S. attorney in Philadelphia accused the company of illegally promoting a bone void filler for unapproved uses, ...
This is accomplished by the exchange of natural bone constituents, deposition in voids or defects, adsorption onto the bone ... After deposition, sediments are compacted as they are buried beneath successive layers of sediment and cemented by minerals ... Due to the increase in porosity of bones through collagen loss, the bone becomes susceptible to hydrolytic infiltration where ... 2002). "The Survival of Organic Matter in Bone: A Review". Archaeometry. 44 (3): 383-394. doi:10.1111/1475-4754.t01-1-00071.. ...
Our market leading Hydroxyapatite bone cements for cranial applications provide you with flexible delivery systems to assist ... Bone cements. Setting the standard in HA bone cements.. Our market leading Hydroxyapatite bone cements for cranial applications ...
Due to its cementing properties, 4MATRIX can be used with or without membrane coverage, reducing working time and costs. ... Optimal Bone Regeneration: During the augmentation procedure, the biphasic calcium sulfate component of 4MATRIX remains intact ... The Biphasic Calcium sulfate completely degrades in strict relation to the bone formation rate (4-10 weeks), while the HA acts ... Advanced composition, simplicity and ease of use: These terms best describe the new 4MATRIX Bone Graft solution delivered by ...
The invention relates to surgical bone cement compositions and more particularly to bone cement compositions having aneasthetic ... Bone cement was temporarily applied to keep the bones spaced and aligned, but this time the cement was Howmedica bone cement ... bone cement powder (40 g)+bone cement liquid (17.9 g)=57.95 g. The mean mass of bone cement discs in an individual experiment ... released from said bone cement composition when the bone cement composition is in a subject and the strength of the bone cement ...
... During balloon kyphoplasty, bone cement (often a pasty compound called PMMA) is ...
... polymeric bone cements, are provided. A feature of the subject methods is that vibration is employed in conjunction with the ... use of the cement, e.g., in preparation of the cement, in preparation of the target site, in delivery of the cement to the ... target site, and/or following delivery of the cement to the target site. Also provided are devices, systems and kits that find ... Methods of employing bone defect filling, e.g., ... bone cement (Zimmer); the CMW™ bone cement (Depuy); the ...
An orthopaedic bone cement mixing device comprising a mixing bowl (1) and a lid (3), said lid (3) having a handle (4) extending ... Automated bone cement mixing apparatus. US6033105 *. 4. Aug. 1999. 7. M rz 2000. Barker; Donald. Integrated bone cement mixing ... Method of mixing bone cement with two mixing paddles. US7967499. 12. Jan. 2010. 28. Juni 2011. Stryker Corporation. Bone cement ... Bone cement mixing apparatus. EP1068893A3 *. 14. Juli 2000. 5. Dez. 2001. DePuy Orthopaedics Inc.. Bone cement mixing apparatus ...
Injecting a calcium-based cement into the bones of some people with knee or hip pain could help them avoid joint replacement ... The cement braces the bruised or injured joint bone from the inside, Vasileff explained, and eventually is replaced by new bone ... "We dont want to send the message to people who have bone-on-bone, with big bone spurs and limited range of motion that theyre ... 11, 2018 (HealthDay News) -- Injecting a calcium-based cement into the bones of some people with knee or hip pain could help ...
... are anchored with bone cement. The bone cement fills the free space between the prosthesis and the bone and plays the important ... Bone cements are provided as two-component materials. Bone cements consist of a powder (i.e., pre-polymerized PMMA and or PMMA ... Osteoplasty - use of bone cement to reduce pain Application note describing how to measure residual monomer in bone cement A ... If the patient is known to have any allergies to constituents of the bone cement, according to current knowledge bone cement ...
Such a bone cement formulation decreases the exothermic temperature of the bone cement and decreases the possibility of tissue ... Therefore, a reduced amount of a polymerizable component need be added to the dry component to form a bone cement. ... A bone cement having a dry component including a large constituent and a small constituent. The small constituent fills a ... Bone cement containing bone marrow. WO2011109684A1. 4 Mar 2011. 9 Sep 2011. Synthes Usa, Llc. Bone cement system for bone ...
Injecting a calcium-based cement into the bones of some people with knee or hip pain could help them avoid joint replacement ... The cement braces the bruised or injured joint bone from the inside, Vasileff explained, and eventually is replaced by new bone ... "We dont want to send the message to people who have bone-on-bone, with big bone spurs and limited range of motion that theyre ... The calcium phosphate cement flows into the spongy inside portion of the bone, filling in microfractures and other damaged ...
The system includes a mixing cartridge for receiving liquid and powder components of bone cement, a mixing device for mixing ... and a delivery gun for discharging the bone cement from the mixing cartridge. The mixing cartridge comprises a cylinder having ... A bone cement mixing and delivery system is provided. ... 32, a bone cement loading system is shown. The bone cement ... A bone cement mixing and delivery system for combining liquid and powder components of bone cement and delivering the bone ...
... present invention provides novel and unique fused fibrous compounds for addition to and manufacture of bone and dental cement ... to bone/dental cement compositions.. A bone/dental cement treatment kit for bone repair or other treatment of a bone/dental ... A bone cement treatment kit for bone repair or other treatment of a bone defect, said kit comprising:. (1) finely divided ... Bone cement and process for preparing the same. US4735625. Sep 11, 1985. Apr 5, 1988. Richards Medical Company. Bone cement ...
Bone Etched Cement is a large scale concrete grid like pattern in a light grey. Approximate Design Repeat Length*: 8.9 ... Bone Etched Cement Y0421 Promoted Finish. 07 Textured Gloss FINISH Y0421 Features. *. Large-Scale Pattern. This is a large- ... Bone Etched Cement is a large scale concrete grid like pattern in a light grey. ... Bone Etched Cement is a large scale concrete grid like pattern in a light grey. ...
In the pristine cement powders, Ag in its metallic form was found, whereas for CPC-Ag 0.6 wt % and CPC-Ag 1.0 wt % cements, ... The CPC-Ag 0 wt % cement exhibited a compressive strength of 6.5 ± 1.0 MPa, whereas for the doped cements (CPC-Ag 0.6 wt % and ... cements, better performances being observed for the cement with a higher Ag-content. ... Silver-ion release from CPC-Ag 0.6 wt % and CPC-Ag 1.0 wt % cements, measured by the Atomic Emission Spectroscopy, corresponds ...
... Materials Market 2026 with the Current State of the Industry, Major ... Bone cement is a material used for the fixation of joint implants to the bone. Chemical bone cement is Plexiglas, which is a ... which is found naturally in bones and teeth. The recently approved bone cement has been used successfully in 4,000 operations ... which makes the use of antibiotic bone cements essential. Casting materials are used for supporting broken or injured bone. ...
... into lesions in patients whose cancer has spread to their bones can allow these individuals to live the remainder of their ... Bone cement eases cancer pain. Injecting "bone cement" into lesions in patients whose cancer has spread to their bones can ... Osteoplasty involves injecting bone cement (here they used polymethyl-methacrylate or PMMA) into a bone lesion with the help of ... Injecting "bone cement" into lesions in patients whose cancer has spread to their bones can literally allow these individuals ...
Compact bovine bone subjected to constant torsional load for long periods of time exhibits large anelastic effects. ... Displacements occur at the cement lines and are responsible for part or all of the long-term deformation. The absence of an ... asymptotic creep strain is consistent with an interpretation of the cement line as a viscous interface. ...
You have invented a new elastic bone cement for spinal fractures. How will it be used? ... "We began with an existing bone cement and added a softener that gives the bone cement some new and different characteristics, ... Elastic bone cement for those with brittle bones Hello there, Cecilia Persson, researcher in biomaterials and biomechanics at ... Today, the bone cement thats injected is mainly an effective pain relief treatment. The problem is that the cement is very ...
... a cartridge filled with bone cement powder and a monomer well for receiving monomer liquid to be flowed into the bone cement ... The monomer liquid flows by gravity in a stream near the outer periphery of the bone cement powder. The stream penetrates the ... bone cement powder and forms a partial cylinder of monomer-rich powder essentially uniformly along the height of the bone ... The powder and liquid are then mechanically mixed to form bone cement. ...
The cement paste (55.86 ± 0.23) obtained higher bone-to-implant contact (BIC) percentage values (better quality, closer contact ... The highest BIC and bone formation percentages were obtained on day 60. These results suggest that the cement paste is ... cement. Biphasic α´L + β-C2Sss was synthesized by solid-state processing, and was used as a raw material to prepare the cement ... A porous cement made of the high temperature forms of C2S, with a low phosphorous substitution level, was produced. An apatite- ...
Buy a discounted Paperback of Bone Cements and Cementing Technique online from Australias leading online bookstore. ... Booktopia has Bone Cements and Cementing Technique by G. H. I. M. Walenkamp. ... Bone Cements and Cementing Technique. By: G. H. I. M. Walenkamp (Editor), D. W. Murray (Editor), U. Henze (Editor), H.-J. Kock ... Bone Cement Porosity in Vacuum Mixing Systems. p. 81. Efficacy of a New Prepacked Vacuum Mixing System with Palamed® G Bone ...
Find Bone Cement related suppliers, manufacturers, products and specifications on GlobalSpec - a trusted source of Bone Cement ... Bone-Implant Interface in Orthopedic Surgery The bone-cement interface represents a complex structure of acrylic bone cement ... The Well-Cemented Total Hip Arthroplasty The basic science aspects include properties of bone cement , mixing and bone ... He was the first surgeon to use a cement gun to deliver bone cement , was active in the design of both cemented and uncemented ...
The bone cement and glue market covers various types of bone cement and glues that are used to fix implants during orthopedic ... On the basis of type, the market is categorized into bone cement and bone glue. The bone glue segment is expected to grow at ... and growth in the demand for bone cement and glue.. Given the immense opportunities in major applications of bone cement and ... The bone cement and glue market is geographically segmented into North America, Europe, Asia Pacific, and the Rest of the World ...
The bone cement mixing apparatus also includes a crank rotatably attached to the lid and a blade positioned in the bowl. The ... A method for mixing bone cement is also disclosed. ... mixing a powder bone cement component with a liquid bone cement ... A bone cement mixing apparatus for mixing a powder bone cement component with a liquid bone cement component includes a bowl ... A bone cement mixing apparatus for mixing a powder bone cement component with a liquid bone cement component includes a bowl ...
... no difference could be found in the in vivo response to these cements in comparison to the base, commercially available cement ... However, there is no data available on the in vivo biocompatibility of any low-modulus cement. In this study, the in vitro ... Furthermore, the in vivo radiopacity of the cements appeared unaltered. While these results are promising, the mechanical ... which has led to the development of low-modulus cements. ... behavior of these cements in vivo remains to be investigated. ...
  • Key players in bone cement and casting materials market are Smith & Nephew plc, Zimmer Biomet Holdings, Exactech, BSN medical GmbH, 3M Health Care Ltd, Stryker Corporation, Orthofix International, and DePuy Orthopaedics. (openpr.com)
  • An orthopaedic bone cement mixing device comprising a mixing bowl (1) and a lid (3), said lid (3) having a handle (4) extending outwardly therefrom. (google.de)
  • The fatigue life for orthopaedic bone cement is to be determined up to 5 million (5 × 10 6 ) cycles. (astm.org)
  • After a thorough inspection of the global orthopaedic bone cement and casting materials market, the analysts have noticed that bone cement and casting materials manufacturing companies are more focussed towards minimizing the pricing and demand for orthopaedic treatment. (lelezard.com)
  • This report covers the global orthopaedic bone cement and casting materials market performance in terms of revenue contribution from various segments. (lelezard.com)
  • This section also includes Future Market Insights' analysis of key trends, drivers, restraints and opportunities, which are influencing the growth of the global orthopaedic bone cement and casting materials market. (lelezard.com)
  • The primary objective of the report is to offer updates and information related to market opportunities in the global orthopaedic bone cement and casting materials market. (lelezard.com)
  • The key part of this report is Future Market Insights' analysis and recommendations on the global orthopaedic bone cement and casting materials market. (lelezard.com)
  • The report takes an overview of the global orthopaedic bone cement and casting materials market. (lelezard.com)
  • The overview mainly consists of market taxonomy and market dynamics that underlines factors influencing the growth of the global orthopaedic bone cement and casting materials market. (lelezard.com)
  • The general market scenario is assumed for orthopaedic bone cement and casting materials sales and driving factors are assumed to develop the market forecast. (lelezard.com)
  • The report covers the competitive landscape that provides a dashboard view of companies that manufacture and provide services in the global orthopaedic bone cement and casting materials market. (lelezard.com)
  • The data that is provided in the global orthopaedic bone cement and casting materials market is validated using the triangulation method, wherein secondary and primary data and Future Market Insights' analysis contribute to the final data. (lelezard.com)
  • Like at least three spinal-surgery patients before them, Golden and Bryant died after their doctor injected bone cement into their spine and some of the material leaked into their blood stream, causing clotting. (winknews.com)
  • A Synthes employee in its regulatory division warned company officials the FDA had said it couldn't use Norian bone cement in spinal surgeries without approval. (winknews.com)
  • In 2003, a patient died on a Texas operating table after a spinal surgeon injected Synthes bone cement into her vertebrae. (winknews.com)
  • Records indicate he never told Golden that he planned to use bone cement or that the FDA specifically prohibited its use in spinal surgeries. (winknews.com)
  • Possible risks associated with this misalignment include cement extravasation into the spinal canal with a possible result of paralysis or nerve injury with a risk of pulmonary embolism or cardiac arrest. (schmidtlaw.com)
  • Though, as the name implies, the discipline was initially developed with attention to children, the correction of spinal and bone deformities in all stages of life eventually became the cornerstone of orthopedic practice. (wikipedia.org)
  • NanoFuse DBM: a proprietary bone cement for use in spinal fusion procedures Clark, Anthony (22 Mar 2013). (wikipedia.org)
  • Infection during orthopedic surgery is a major concern, which makes the use of antibiotic bone cements essential. (openpr.com)
  • Casting materials are available in various shapes and sizes, however, the most common type of casting material used in antibiotic bone cement are plasters and fiberglass. (openpr.com)
  • Increasing incidents of falls, road-accidents, and sports injuries is expected to foster growth of antibiotic bone cement and casting materials market. (openpr.com)
  • Rising number of road accidents is thus expected to boost growth of the antibiotic bone cement and casting materials market over the forecast. (openpr.com)
  • Increasing sports and outdoor activity trend and low use of protective equipment during sports, leads to severe sports injuries in joints and this is expected to fuel the antibiotic bone cement and casting material market growth in the near future. (openpr.com)
  • High cost of joint replacement surgeries is a factor expected to restrain antibiotic bone cement and casting materials market growth. (openpr.com)
  • On the basis of region, antibiotic bone cement and casting materials market by Coherent Market Insights is segmented in to North America, Latin America, Europe, Asia Pacific, Middle East, and Africa. (openpr.com)
  • For these tests, new antimicrobial bone-cement was prepared using a caffeic acid phenethyl ester (CAPE) compound from natural propolis, and an antibiotic bone-cement was prepared by the inclusion of gentamycin (GM). (rsc.org)
  • Moreover, the CAPE-loaded antimicrobial bone-cements showed a controlled release pattern better than that of the GM-loaded antibiotic bone-cement due to their homogeneous loading. (rsc.org)
  • Both stem and bone are assumed to be rigidly connected by a layer of acrylic bone cement (PMMA) and the layer taken are of constant cross section. (thefreedictionary.com)
  • 5.1 This test method describes a uniaxial, constant amplitude, fully reversed fatigue test to characterize the fatigue performance of a uniform cylindrical waisted specimen manufactured from acrylic bone cement. (astm.org)
  • The test method can be used to compare different acrylic bone cement formulations and products and different mixing methods and environments (that is, mixing temperature, vacuum, centrifugation, and so forth). (astm.org)
  • 1.1 This test method describes test procedures for evaluating the constant amplitude, uniaxial, tension-compression uniform fatigue performance of acrylic bone cement materials. (astm.org)
  • They include a last generation antibiotic (daptomycin or linezolid) in combination with vancomycin and are performed based on a novel modification of the Palacos R® acrylic bone cement, which is based on two components, a liquid (methyl methacrylate) and a solid (polymeric phase). (ovid.com)
  • Once the bag is introduced, acrylic bone cement is injected until the vertebrae is judged to be restored to its near original height. (wikipedia.org)
  • Ling's ambition was to create a hip replacement that could be secured to bony skeleton with acrylic bone cement. (wikipedia.org)
  • Unsaturated fatty acids and their glycerol esters are both natural compounds that can be used to modify the properties of bone cements. (hindawi.com)
  • used aromatic amines as well as acrylic monomers, both derived from oleic acid, to optimize the properties of bone cements [ 14 ]. (hindawi.com)
  • Bone Cement Market report is an overview of the Global Bone Cement Industry It covers all the recent trends including key developments in the global Bone Cement market in present analysis and future predictions of the global Bone Cement market trends along with the projections provided in the research report. (beforeitsnews.com)
  • Global Bone Cement Market Report provides main statistics connected to the overall market and value forecast over a period, from 2019 to 2028. (wn.com)
  • To analyze and forecast the global Bone Cement market on the basis of type, application, and end user. (emailwire.com)
  • The key findings and recommendations highlight crucial progressive industry trends in the global Bone Cement market, thereby allowing players across the value chain to develop effective long-term strategies. (emailwire.com)
  • wherein the biocompatible bone replacement includes less than 5 percent pores. (google.co.uk)
  • 7. The biocompatible bone replacement of claim 6 , wherein said liquid component includes a polymerizable compound, a polymerization accelerator, stabilizer, or mixtures thereof, wherein when said liquid component is mixed with said large particle constituent and said small particle constituent said polymerizable compound polymerizes to form a polymer structure. (google.co.uk)
  • Norian Drillable Bone Void Filler is a moldable, biocompatible bone void filler with added reinforcing fibers. (clinicaltrials.gov)
  • CPC are bioresorbable and biocompatible (unlike PMMA cements), but can only be used in non- or low-load bearing areas and are thus more applicable in cranio-and maxilla-facial surgeries. (sun.ac.za)
  • A bone cement mixer having a cartridge filled with bone cement powder and a monomer well for receiving monomer liquid to be flowed into the bone cement powder. (google.com)
  • The monomer liquid flows by gravity in a stream near the outer periphery of the bone cement powder. (google.com)
  • The stream penetrates the bone cement powder and forms a partial cylinder of monomer-rich powder essentially uniformly along the height of the bone cement powder. (google.com)
  • Note 1: In situ self-curing can be the source of released reagents that can cause local and/or systemic toxicity as in the case of the monomer released from methacrylics-based bone cement used in orthopedic surgery. (wikipedia.org)
  • Bone cements consist of a powder (i.e., pre-polymerized PMMA and or PMMA or MMA co-polymer beads and or amorphous powder, radio-opacifer, initiator) and a liquid (MMA monomer, stabilizer, inhibitor). (wikipedia.org)
  • For a long time it was believed that the incompletely converted monomer released from bone cement was the cause of circulation reactions and embolism. (wikipedia.org)
  • The first component is a liquid mixture comprising monomeric methyl methacrylate together with a small amount of N, N-dimethyl-p-toluidine to induce setting of the mixed cement, and hydroquinone to inhibit self-polymerization of the monomer liquid. (google.com)
  • Upon activation of the 4MATRIX cement, the premixed powder is hydrated with sterile saline, ensuring complete wetting of the sterile mix, and a 3 minute working time. (prweb.com)
  • The system includes a mixing cartridge for receiving liquid and powder components of bone cement, a mixing device for mixing the components, and a delivery gun for discharging the bone cement from the mixing cartridge. (google.com)
  • said locking member including a resilient portion for biasing said at least one male portion into mating engagement with said at least one female portion in said cylinder wall whereby said piston remains in said locked position while mixing the liquid and powder components of the bone cement. (google.com)
  • The stream penetrates the bone cement powder. (google.com)
  • The powder and liquid are then mechanically mixed to form bone cement. (google.com)
  • 4. The device as in claim 1 wherein the funnel includes means located around the inner circumference of the top of the circumferential body for guiding dry bone cement powder into the chamber, and structure on the bottom of the funnel overlying the top of the circumferential body. (google.com)
  • c) a partial cylindrical body of wetted bone cement powder in the mixing chamber under the bone cement liquid discharge means, the partial cylindrical body having a first portion in contact with the circumferential body of the mixing chamber and a second partial cylindrical portion contacting the bone cement powder, said wetted bone cement powder including bone cement liquid distributed essentially uniformly along the height of the partial cylindrical body. (google.com)
  • A bone cement mixing apparatus for mixing a powder bone cement component with a liquid bone cement component includes a bowl and a lid removably secured to the bowl. (google.com)
  • This study compares elution of gentamicin, elution of vancomycin, and compressive strength of Copal® spacem and of Palacos® R+G at different vancomycin loadings in the powder of the cements. (hindawi.com)
  • Compression test specimens were fabricated using Copal® spacem manually loaded with 0.5 g gentamicin and additionally 2 g, 4 g, and 6 g of vancomycin per 40 g of cement powder (COP specimens) and using 0.5 g gentamicin premixed Palacos® R+G manually loaded with 2 g, 4 g, and 6 g of vancomycin per 40 g of cement powder (PAL specimens). (hindawi.com)
  • Antibiotic loading of the bone cement can be performed right before the mixing procedure (manually loaded) or during the industrial production of the powder component (premixed). (hindawi.com)
  • The spacer is molded after initiation of the polymerization of the cement by mixing its powder and liquid. (hindawi.com)
  • 2. Bone cement powder according to claim 1, wherein the sugar alcohol comprises 4, 5 or 6 carbon atoms, whereby the sugar alcohol is selected from erythritol, xylitol, and mannitol. (freepatentsonline.com)
  • 3. Bone cement powder according to claim 1, wherein the weight ratio of sugar alcohol to calcium salt of fosfomycin is at least 1. (freepatentsonline.com)
  • 4. Bone cement powder according to claim 1, wherein the fosfomycin preparation is a solidified sugar alcohol melt with the calcium salt of fosfomycin dispersed in it. (freepatentsonline.com)
  • 6. Bone cement powder according to claim 1, further comprising at least one particulate polymethylmethacrylate or polymethylmethacrylate-co-polymer, a particulate radiopaquer, a radical initiator, and, optionally, a further antibiotic and/or antiseptic. (freepatentsonline.com)
  • The bone cement utilizes strontium salts as radiopacifiers, and comprises a powder component and a liquid component. (hku.hk)
  • Donkey stones were made from a mixture of pulverised stone, cement, bleach powder and water. (wikipedia.org)
  • In response, the cat applies sneezing powder against the dog's nose to open his mouth, and after taking a flashlight to look inside, the dog sneezes and subjects the cat to his final punishment: The Works, which starts out with the fence and takes him towards a long trail leading into the same cement mixer for "The Thinker. (wikipedia.org)
  • In this study we investigated a composite prepared from a hydroxyapatite forming bone cement and mesoporous bioactive glass (MBG) granules as a potential carrier for biologically active proteins. (rsc.org)
  • A team from the University of Limerick in 2017 developed a new type of cement, which reduces the time needed for orthopedic operations and helps broken bones to heal and conjoin more quickly. (openpr.com)
  • 8. The method according to claim 7 , wherein said vibration provides for controlled penetration of said cement composition into said cancellous bone without use of substantial pressure. (google.com)
  • While the in vitro cytotoxicity appeared somewhat affected by the castor oil and linoleic acid additions, no difference could be found in the in vivo response to these cements in comparison to the base, commercially available cement, in terms of histology and flow cytometry analysis of the presence of immune cells. (hindawi.com)
  • Through various in vitro and in vivo biological assessments, the CAPE-loaded antimicrobial bone-cements showed positive results in all assessments, without any inflammatory response. (rsc.org)
  • In this study, peptide ST4SA, a class IIa broad-spectrum bacteriocin, has been incorporated into brushite bone cement and characterized in vitro. (sun.ac.za)
  • Nisin F, a class Ia bacteriocin was also incorporated into brushite cement and its activity studied in vitro and in vivo. (sun.ac.za)
  • Similar results were observed in vitro as recorded with peptide ST4SA incorporated into brushite cement. (sun.ac.za)
  • With this study we have shown that antimicrobial peptides that differ in structure (classes I and II) could be incorporated into bone cement and control the growth of S. aureus in vivo and in vitro. (sun.ac.za)
  • Verskeie in vitro en in vivo toetse is al gedoen op die inkorporering van antibiotika en ander terapeutiese middels in KFS en die vrystelling daarvan uit die matriks. (sun.ac.za)
  • Note 2: In dentistry, polymer-based cements are also used as fillers of cavities. (wikipedia.org)
  • (hindawi.com)
  • The paste is mixed with beads of a natural polymer (made from seaweed) filled with bone cells. (bio-medicine.org)
  • The natural polymer beads gradually dissolve when exposed to the body's fluids, creating a scaffold that is filled by the now released bone cells. (bio-medicine.org)
  • In addition to creating pores in the hardened cement, the natural polymer beads protect the cells during the 30 minutes required for the cement to harden. (bio-medicine.org)
  • citation needed] Doctors simply cut a small hole in the patient's neck/back and inject a hydrogel polymer into the bone gap much the same way they would a titanium rod. (wikipedia.org)
  • The sponge-like polymer, polycaprolactone (PCL) shows promise as a medical material that can be used to fill gaps in human bones and serve as a scaffold to promote new bone growth. (wikipedia.org)
  • During the augmentation procedure, the biphasic calcium sulfate component of 4MATRIX remains intact in the presence of blood and saliva and stimulates bone growth when placed in contact with bone or periosteum. (prweb.com)
  • Those with full-blown bone-on-bone arthritis or joint pain caused by damage to the cartilage and ligaments will get little to no relief from the procedure, Vasileff said. (webmd.com)
  • The best candidates for the procedure are patients who still have some cartilage protecting their joint, but have somehow "overloaded" and injured the bone, causing swelling and pain, Hepinstall said. (webmd.com)
  • another procedure involves injecting bone cement into a cavity created by an inflatable device. (thefreedictionary.com)
  • By 1995 the Norian team had performed animal and human trials of the procedure, and published 'Skeletal Repair by in Situ Formation of the Mineral Phase of Bone' in Science, the American Academy of Sciences journal. (saveourbones.com)
  • During the procedure, bone cement is injected with a biopsy needle into the collapsed or fractured vertebra. (wikipedia.org)
  • The RF-TVA procedure is different in that a physician directs a small navigational canula into the vertebra and creates a small pathways for the cement as opposed to using a balloon. (wikipedia.org)
  • A cranioplasty may be performed instead, in which a plate, constructed using titanium mesh and bone cement, is fixed to the back of the skull following a standard FMD procedure. (wikipedia.org)
  • Alternatively, FFS surgeons can perform a procedure called a forehead reconstruction or cranioplasty where the glabella bone is taken apart, thinned and re-shaped, and reassembled in the new feminine position with small titanium wires or titanium orthopedic plate and screws. (wikipedia.org)
  • Composed of pure biphasic calcium sulfate & hydroxyapatite and characterized by a predetermined setting time and resorption rate, 4MATRIX is the preferred augmentation product for a wide variety of dental bone grafting procedures. (prweb.com)
  • Cement augmentation significantly increased pullout force in all cases. (epfl.ch)
  • The effect of cortical thickness on pullout force was reduced with increased cement augmentation depth. (epfl.ch)
  • We concluded that LM-CA bone cement can be used as a bioactive bone graft material due to ability of bonding to the existing bone and CA-PMMA can be used as a graft material for augmentation of bone-volume due to dimensional stability. (scientific.net)
  • Because of certain favorable properties, such as its easy manipulation and its ability to maintain the morphology of the defect site by acting as a scaffold, the newly developed cement is suitable for us as a graft material, and could be used very effectively in alveolar augmentation. (scientific.net)