Acrylic acids or acrylates which are substituted in the C-2 position with a methyl group.
The methyl esters of methacrylic acid that polymerize easily and are used as tissue cements, dental materials, and absorbent for biological substances.
Organic compounds that include a cyclic ether with three ring atoms in their structure. They are commonly used as precursors for POLYMERS such as EPOXY RESINS.
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.
Benzene derivatives that include one or more hydroxyl groups attached to the ring structure.
The methyl ester of methacrylic acid. It polymerizes easily to form POLYMETHYL METHACRYLATE. It is used as a bone cement.
A biocompatible, hydrophilic, inert gel that is permeable to tissue fluids. It is used as an embedding medium for microscopy, as a coating for implants and prostheses, for contact lenses, as microspheres in adsorption research, etc.
Non-steroidal compounds with estrogenic activity.
Exogenous agents, synthetic and naturally occurring, which are capable of disrupting the functions of the ENDOCRINE SYSTEM including the maintenance of HOMEOSTASIS and the regulation of developmental processes. Endocrine disruptors are compounds that can mimic HORMONES, or enhance or block the binding of hormones to their receptors, or otherwise lead to activating or inhibiting the endocrine signaling pathways and hormone metabolism.
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.
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.
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.
Materials used in the production of dental bases, restorations, impressions, prostheses, etc.
Chemical reaction in which monomeric components are combined to form POLYMERS (e.g., POLYMETHYLMETHACRYLATE).
The part of a denture that overlies the soft tissue and supports the supplied teeth and is supported in turn by abutment teeth or the residual alveolar ridge. It is usually made of resins or metal or their combination.
A peroxide derivative that has been used topically for BURNS and as a dermatologic agent in the treatment of ACNE and POISON IVY DERMATITIS. It is used also as a bleach in the food industry.
Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).
Substances or energies, for example heat or light, which when introduced into the air, water, or land threaten life or health of individuals or ECOSYSTEMS.
Polymers of high molecular weight which at some stage are capable of being molded and then harden to form useful components.
The quality or state of being wettable or the degree to which something can be wet. This is also the ability of any solid surface to be wetted when in contact with a liquid whose surface tension is reduced so that the liquid spreads over the surface of the solid.
Characteristics or attributes of the outer boundaries of objects, including molecules.
Polymers where the main polymer chain comprises recurring amide groups. These compounds are generally formed from combinations of diamines, diacids, and amino acids and yield fibers, sheeting, or extruded forms used in textiles, gels, filters, sutures, contact lenses, and other biomaterials.
A group of compounds that has the general structure of a dicarboxylic acid-substituted benzene ring. The ortho-isomer is used in dye manufacture. (Dorland, 28th ed)
Substances that cause the adherence of two surfaces. They include glues (properly collagen-derived adhesives), mucilages, sticky pastes, gums, resins, or latex.
Synthetic resins, containing an inert filler, that are widely used in dentistry.
The consequences of exposing the FETUS in utero to certain factors, such as NUTRITION PHYSIOLOGICAL PHENOMENA; PHYSIOLOGICAL STRESS; DRUGS; RADIATION; and other physical or chemical factors. These consequences are observed later in the offspring after BIRTH.
Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.
Silicon polymers that contain alternate silicon and oxygen atoms in linear or cyclic molecular structures.
Compounds similar to hydrocarbons in which a tetravalent silicon atom replaces the carbon atom. They are very reactive, ignite in air, and form useful derivatives.
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.
The quality or state of being able to be bent or creased repeatedly. (From Webster, 3d ed)
The properties and processes of materials that affect their behavior under force.
Exposure of the female parent, human or animal, to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals that may affect offspring. It includes pre-conception maternal exposure.
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.
A group of thermoplastic or thermosetting polymers containing polyisocyanate. They are used as ELASTOMERS, as coatings, as fibers and as foams.
The technique of placing cells or tissue in a supporting medium so that thin sections can be cut using a microtome. The medium can be paraffin wax (PARAFFIN EMBEDDING) or plastics (PLASTIC EMBEDDING) such as epoxy resins.
Air pollutants found in the work area. They are usually produced by the specific nature of the occupation.
Water swollen, rigid, 3-dimensional network of cross-linked, hydrophilic macromolecules, 20-95% water. They are used in paints, printing inks, foodstuffs, pharmaceuticals, and cosmetics. (Grant & Hackh's Chemical Dictionary, 5th ed)
The infiltrating of histological specimens with plastics, including acrylic resins, epoxy resins and polyethylene glycol, for support of the tissues in preparation for sectioning with a microtome.
Glycosides of GLUCURONIC ACID formed by the reaction of URIDINE DIPHOSPHATE GLUCURONIC ACID with certain endogenous and exogenous substances. Their formation is important for the detoxification of drugs, steroid excretion and BILIRUBIN metabolism to a more water-soluble compound that can be eliminated in the URINE and BILE.
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.
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.
Individuals responsible for fabrication of dental appliances.
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.
The mechanical property of material that determines its resistance to force. HARDNESS TESTS measure this property.
The exposure to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals.
Chemical compound used to initiate polymerization of dental resins by the use of DENTAL CURING LIGHTS. It absorbs UV light and undergoes decomposition into free radicals that initiate polymerization process of the resins in the mix. Each photoinitiator has optimum emission spectrum and intensity for proper curing of dental materials.
Methyl, propyl, butyl, and ethyl esters of p-hydroxybenzoic acid. They have been approved by the FDA as antimicrobial agents for foods and pharmaceuticals. (From Hawley's Condensed Chemical Dictionary, 11th ed, p872)
The preparation and analysis of samples on miniaturized devices.
The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.
A synthetic nonsteroidal estrogen used in the treatment of menopausal and postmenopausal disorders. It was also used formerly as a growth promoter in animals. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), diethylstilbestrol has been listed as a known carcinogen. (Merck, 11th ed)
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)
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)
The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.
The relationship between the dose of an administered drug and the response of the organism to the drug.
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)
A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Technique whereby the weight of a sample can be followed over a period of time while its temperature is being changed (usually increased at a constant rate).
Alicyclic hydrocarbons in which three or more of the carbon atoms in each molecule are united in a ring structure and each of the ring carbon atoms is joined to two hydrogen atoms or alkyl groups. The simplest members are cyclopropane (C3H6), cyclobutane (C4H8), cyclohexane (C6H12), and derivatives of these such as methylcyclohexane (C6H11CH3). (From Sax, et al., Hawley's Condensed Chemical Dictionary, 11th ed)
The maximum compression a material can withstand without failure. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p427)
Material applied to the tissue side of a denture to provide a soft lining to the parts of a denture coming in contact with soft tissue. It cushions contact of the denture with the tissues.
The study of the energy of electrons ejected from matter by the photoelectric effect, i.e., as a direct result of absorption of energy from electromagnetic radiation. As the energies of the electrons are characteristic of a specific element, the measurement of the energy of these electrons is a technique used to determine the chemical composition of surfaces.
Occlusal wear of the surfaces of restorations and surface wear of dentures.
Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.
Containers, packaging, and packaging materials for processed and raw foods and beverages. It includes packaging intended to be used for storage and also used for preparation of foods such as microwave food containers versus COOKING AND EATING UTENSILS. Packaging materials may be intended for food contact or designated non-contact, for example, shipping containers. FOOD LABELING is also available.
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)
Numerical expression indicating the measure of stiffness in a material. It is defined by the ratio of stress in a unit area of substance to the resulting deformation (strain). This allows the behavior of a material under load (such as bone) to be calculated.
A network of cross-linked hydrophilic macromolecules used in biomedical applications.
Polymeric resins derived from OXIRANES and characterized by strength and thermosetting properties. Epoxy resins are often used as dental materials.
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.
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.
Polymers of ETHYLENE OXIDE and water, and their ethers. They vary in consistency from liquid to solid depending on the molecular weight indicated by a number following the name. They are used as SURFACTANTS, dispersing agents, solvents, ointment and suppository bases, vehicles, and tablet excipients. Some specific groups are NONOXYNOLS, OCTOXYNOLS, and POLOXAMERS.
A semisynthetic alkylated ESTRADIOL with a 17-alpha-ethinyl substitution. It has high estrogenic potency when administered orally, and is often used as the estrogenic component in ORAL CONTRACEPTIVES.
Compounds that interact with ESTROGEN RECEPTORS in target tissues to bring about the effects similar to those of ESTRADIOL. Estrogens stimulate the female reproductive organs, and the development of secondary female SEX CHARACTERISTICS. Estrogenic chemicals include natural, synthetic, steroidal, or non-steroidal compounds.
Colorless, odorless crystals that are used extensively in research laboratories for the preparation of polyacrylamide gels for electrophoresis and in organic synthesis, and polymerization. Some of its polymers are used in sewage and wastewater treatment, permanent press fabrics, and as soil conditioning agents.
The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment.
Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water.
The hardening or polymerization of bonding agents (DENTAL CEMENTS) via exposure to light.
The 17-beta-isomer of estradiol, an aromatized C18 steroid with hydroxyl group at 3-beta- and 17-beta-position. Estradiol-17-beta is the most potent form of mammalian estrogenic steroids.
Inorganic compounds that contain fluorine as an integral part of the molecule.
A genus of gram-negative, aerobic, rod-shaped bacteria characterized by an outer membrane that contains glycosphingolipids but lacks lipopolysaccharide. They have the ability to degrade a broad range of substituted aromatic compounds.
The adhesion of gases, liquids, or dissolved solids onto a surface. It includes adsorptive phenomena of bacteria and viruses onto surfaces as well. ABSORPTION into the substance may follow but not necessarily.
The susceptibility of the DENTIN to dissolution.
One of the ESTROGEN RECEPTORS that has marked affinity for ESTRADIOL. Its expression and function differs from, and in some ways opposes, ESTROGEN RECEPTOR BETA.
The system of glands that release their secretions (hormones) directly into the circulatory system. In addition to the ENDOCRINE GLANDS, included are the CHROMAFFIN SYSTEM and the NEUROSECRETORY SYSTEMS.
Hard, amorphous, brittle, inorganic, usually transparent, polymerous silicate of basic oxides, usually potassium or sodium. It is used in the form of hard sheets, vessels, tubing, fibers, ceramics, beads, etc.
One of the ESTROGEN RECEPTORS that has greater affinity for ISOFLAVONES than ESTROGEN RECEPTOR ALPHA does. There is great sequence homology with ER alpha in the DNA-binding domain but not in the ligand binding and hinge domains.
Technique by which phase transitions of chemical reactions can be followed by observation of the heat absorbed or liberated.
Nanometer-scale composite structures composed of organic molecules intimately incorporated with inorganic molecules. (Glossary of Biotechnology and Nanobiotechology Terms, 4th ed)
The use of a treatment material (tissue conditioner) to re-establish tone and health to irritated oral soft tissue, usually applied to the edentulous alveolar ridge.
A diphenyl ether derivative used in cosmetics and toilet soaps as an antiseptic. It has some bacteriostatic and fungistatic action.
The degree of approximation or fit of filling material or dental prosthetic to the tooth surface. A close marginal adaptation and seal at the interface is important for successful dental restorations.
The absence of both hearing and vision.
Methods of preparing tissue for examination and study of the origin, structure, function, or pathology.
Artificial substitutes for body parts and materials inserted into organisms during experimental studies.
Elimination of ENVIRONMENTAL POLLUTANTS; PESTICIDES and other waste using living organisms, usually involving intervention of environmental or sanitation engineers.
A property of the surface of an object that makes it stick to another surface.
Process by which unwanted microbial, plant or animal materials or organisms accumulate on man-made surfaces.
Exchange of substances between the maternal blood and the fetal blood at the PLACENTA via PLACENTAL CIRCULATION. The placental barrier excludes microbial or viral transmission.
QUATERNARY AMMONIUM COMPOUNDS containing three methyl groups, having the general formula of (CH3)3N+R.
Cytoplasmic proteins that bind estrogens and migrate to the nucleus where they regulate DNA transcription. Evaluation of the state of estrogen receptors in breast cancer patients has become clinically important.
Polymeric materials (usually organic) of large molecular weight which can be shaped by flow. Plastic usually refers to the final product with fillers, plasticizers, pigments, and stabilizers included (versus the resin, the homogeneous polymeric starting material). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Methods utilizing the principles of MICROFLUIDICS for sample handling, reagent mixing, and separation and detection of specific components in fluids.
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.
A species of gram-positive, coccoid bacteria commensal in the respiratory tract.
The temperature at which a substance changes from one state or conformation of matter to another.
Methods of preparing cells or tissues for examination and study of their origin, structure, function, or pathology. The methods include preservation, fixation, sectioning, staining, replica, or other technique to allow for viewing using a microscope.
A spectroscopic technique in which a range of wavelengths is presented simultaneously with an interferometer and the spectrum is mathematically derived from the pattern thus obtained.
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.
A plant genus of the family PORTULACACEAE.
Artificial implanted lenses.
Oral tissue surrounding and attached to TEETH.
Devices used to generate extra soft tissue in vivo to be used in surgical reconstructions. They exert stretching forces on the tissue and thus stimulate new growth and result in TISSUE EXPANSION. They are commonly inflatable reservoirs, usually made of silicone, which are implanted under the tissue and gradually inflated. Other tissue expanders exert stretching forces by attaching to outside of the body, for example, vacuum tissue expanders. Once the tissue has grown, the expander is removed and the expanded tissue is used to cover the area being reconstructed.
The hollow thick-walled muscular organ in the female PELVIS. It consists of the fundus (the body) which is the site of EMBRYO IMPLANTATION and FETAL DEVELOPMENT. Beyond the isthmus at the perineal end of fundus, is CERVIX UTERI (the neck) opening into VAGINA. Beyond the isthmi at the upper abdominal end of fundus, are the FALLOPIAN TUBES.
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.
Materials incorporated mechanically in plastics (usually PVC) to increase flexibility, workability or distensibility; due to the non-chemical inclusion, plasticizers leach out from the plastic and are found in body fluids and the general environment.
Procedures carried out with regard to the teeth or tooth structures preparatory to specified dental therapeutic and surgical measures.
The external and internal organs related to reproduction.
A plasticizer used in most plastics and found in water, air, soil, plants and animals. It may have some adverse effects with long-term exposure.
An ester of phthalic acid. It appears as a light-colored, odorless liquid and is used as a plasticizer for many resins and elastomers.
Inorganic or organic compounds that contain boron as an integral part of the molecule.
A solution used for irrigating the mouth in xerostomia and as a substitute for saliva.
Polymers of organic acids and alcohols, with ester linkages--usually polyethylene terephthalate; can be cured into hard plastic, films or tapes, or fibers which can be woven into fabrics, meshes or velours.
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.
A fabricated tooth substituting for a natural tooth in a prosthesis. It is usually made of porcelain or plastic.
An ester of TESTOSTERONE with a propionate substitution at the 17-beta position.
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.
Calcium salts of phosphoric acid. These compounds are frequently used as calcium supplements.
Silicone polymers which consist of silicon atoms substituted with methyl groups and linked by oxygen atoms. They comprise a series of biocompatible materials used as liquids, gels or solids; as film for artificial membranes, gels for implants, and liquids for drug vehicles; and as antifoaming agents.
The study of fluid channels and chambers of tiny dimensions of tens to hundreds of micrometers and volumes of nanoliters or picoliters. This is of interest in biological MICROCIRCULATION and used in MICROCHEMISTRY and INVESTIGATIVE TECHNIQUES.
Agents that reduce the frequency or rate of spontaneous or induced mutations independently of the mechanism involved.
A member of the AGARICALES known for edible MUSHROOMS.
Elements of limited time intervals, contributing to particular results or situations.
An array of tests used to determine the toxicity of a substance to living systems. These include tests on clinical drugs, foods, and environmental pollutants.
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)
Preparation of TOOTH surfaces and DENTAL MATERIALS with etching agents, usually phosphoric acid, to roughen the surface to increase adhesion or osteointegration.
An insecticide. Methoxychlor has estrogenic effects in mammals, among other effects.
Manufacturing technology for making microscopic devices in the micrometer range (typically 1-100 micrometers), such as integrated circuits or MEMS. The process usually involves replication and parallel fabrication of hundreds or millions of identical structures using various thin film deposition techniques and carried out in environmentally-controlled clean rooms.
A product formed from skin, white connective tissue, or bone COLLAGEN. It is used as a protein food adjuvant, plasma substitute, hemostatic, suspending agent in pharmaceutical preparations, and in the manufacturing of capsules and suppositories.
Nanometer-sized particles that are nanoscale in three dimensions. They include nanocrystaline materials; NANOCAPSULES; METAL NANOPARTICLES; DENDRIMERS, and QUANTUM DOTS. The uses of nanoparticles include DRUG DELIVERY SYSTEMS and cancer targeting and imaging.
A plant genus of the family FABACEAE. The common name of broom may be confused with Scotch Broom (CYTISUS) or Butcher's Broom (RUSCUS) or Desert Broom (BACCHARIS) or Spanish Broom (SPARTIUM) or Brome (BROMUS).
Derivatives of ammonium compounds, NH4+ Y-, in which all four of the hydrogens bonded to nitrogen have been replaced with hydrocarbyl groups. These are distinguished from IMINES which are RN=CR2.
A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company.
Biocompatible materials usually used in dental and bone implants that enhance biologic fixation, thereby increasing the bond strength between the coated material and bone, and minimize possible biological effects that may result from the implant itself.
The giving of drugs, chemicals, or other substances by mouth.
Substances used to clean dentures; they are usually alkaline peroxides or hypochlorites, may contain enzymes and release oxygen. Use also for sonic action cleaners.
Materials fabricated by BIOMIMETICS techniques, i.e., based on natural processes found in biological systems.
The resistance that a gaseous or liquid system offers to flow when it is subjected to shear stress. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The total process by which organisms produce offspring. (Stedman, 25th ed)
A microanalytical technique combining mass spectrometry and gas chromatography for the qualitative as well as quantitative determinations of compounds.
Benzoic acids, salts, or esters that contain an amino group attached to carbon number 4 of the benzene ring structure.

In vitro comparison of the retention capacity of new aesthetic brackets. (1/354)

Tensile bond strength and bond failure location were evaluated in vitro for two types of aesthetic brackets (non-silanated ceramic, polycarbonate) and one stainless steel bracket, using bovine teeth as the substrate and diacrylate resin as the adhesive. The results show that metallic bracket had the highest bond strength (13.21 N) followed by the new plastic bracket (12.01 N), which does not require the use of a primer. The non-silanated ceramic bracket produced the lowest bond strength (8.88 N). Bond failures occurred mainly between bracket and cement, although a small percentage occurred between the enamel-cement interface with the metal and plastic brackets and within the cement for the plastic bracket. With the ceramic bracket all the failures occurred at the bracket-cement interface. This suggests that the problems of enamel lesions produced by this type of bracket may have been eliminated. The results also show that the enamel/adhesive bond is stronger than the adhesive/bracket bond in this in vitro study.  (+info)

The crystal growth technique--a laboratory evaluation of bond strengths. (2/354)

An ex vivo study was carried out to determine differences in the bond strengths achieved with brackets placed using a crystal growth technique compared with a conventional acid-etch technique. A solution of 37 per cent phosphoric acid was used for acid-etching and a commercially available polyacrylic acid gel, Crystal-lok for crystal growth. A heavily-filled composite resin was used for all samples to bond brackets to healthy premolar teeth extracted for orthodontic purposes. Polycrystalline ceramic and stainless steel brackets were used and tested to both tensile and shear failure using an Instron Universal Testing machine. The tensile and shear bond strengths were recorded in kgF. In view of difficulties experienced with previous authors using different units to describe their findings, the data were subsequently converted to a range of units in order to facilitate direct comparison. The crystal growth technique produced significantly lower bond strengths than the acid-etch technique for ceramic and stainless steel brackets, both in tensile and shear mode. The tensile bond strength for stainless steel brackets with crystal growth was 2.2 kg compared with 6.01 kg for acid-etch, whilst with ceramic brackets the tensile bond strengths were 3.9 kg for crystal growth and 5.55 kg for acid-etch. The mean shear bond strength for stainless steel brackets with crystal growth was 12.61 kg compared with 21.55 kg for acid-etch, whilst with ceramic brackets the shear bond strengths were 7.93 kg with crystal growth compared with 16.55 kg for acid-tech. These bond strengths were below those previously suggested as clinically acceptable.  (+info)

Thermal image analysis of electrothermal debonding of ceramic brackets: an in vitro study. (3/354)

This study used modern thermal imaging techniques to investigate the temperature rise induced at the pulpal well during thermal debonding of ceramic brackets. Ceramic brackets were debonded from vertically sectioned premolar teeth using an electrothermal debonding unit. Ten teeth were debonded at the end of a single 3-second heating cycle. For a further group of 10 teeth, the bracket and heating element were left in contact with the tooth during the 3-second heating cycle and the 6-second cooling cycle. The average pulpal wall temperature increase for the teeth debonded at the end of the 3-second heating cycle was 16.8 degrees C. When the heating element and bracket remained in contact with the tooth during the 6-second cooling cycle an average temperature increase of 45.6 degrees C was recorded.  (+info)

An ex vivo investigation into the bond strength of orthodontic brackets and adhesive systems. (4/354)

The aim of this study was to compare the shear bond strength of Adhesive Precoated Brackets (APC) with that of two types of uncoated bracket bases, Straight-Wire and Dyna-Lock. Two types of orthodontic adhesives were used, Transbond XT and Right-On. Three different curing times were evaluated with the APC brackets in order to find the best. Adhesive remnants on the enamel surface following debond were evaluated using the Adhesive Remnant Index (Artun and Bergland, 1984). Bond strengths ranged from 11.00 to 22.08 MPa. For both types of brackets Transbond produced a significant increase in bond strength compared to Right-On. The Dyna-Lock/Right-On combination produced the poorest results. APC brackets cured for 40 s had similar bond strengths to uncoated brackets fixed by means of Transbond. Overall, 79 per cent of specimens had less than half the tooth surface covered with adhesive following debond. Significantly more adhesive remained on tooth surfaces following debond of the Straight-Wire/Right-On group than any other bracket/adhesive combination. Bond strengths were higher with light-cured Transbond than with chemically-cured Right-On. When Transbond is used in association with APC brackets a 40-second cure time is recommended.  (+info)

Determination of bisphenol A and related aromatic compounds released from bis-GMA-based composites and sealants by high performance liquid chromatography. (5/354)

Most of the composites and sealants used in dentistry are based on bisphenol A diglycidylether methacrylate (Bis-GMA). Reports revealed that in situ polymerization is not complete and that free monomers can be detected by different analytic methods. Concerns about the estrogenicity of bisphenol A (BPA) and other aromatic components leached from commercial products have been expressed. We studied biphenolic components eluted from seven composites and one sealant before and after in vitro polymerization using HPLC and gas chromatography/mass spectrometry and we investigated how pH modifications affect the leaching of these components. We found BPA (maximal amount 1.8 microg/mg dental material), its dimethacrylate derivative (Bis-DMA, 1.15 microg/mg), bisphenol A diglycidylether (6. 1 microg/mg), Bis-GMA (2.0 microg/mg), and ethoxylate and propoxylate of bisphenol A in media in which samples of different commercial products were maintained under controlled pH and temperature conditions. Our results confirm the leaching of estrogenic monomers into the environment by Bis-GMA-based composites and sealants in concentrations at which biologic effects have been demonstrated in in vivo experimental models. The main issue with implications for patient care and dentist responsibility is to further determine the clinical relevance of this estrogenic exposure.  (+info)

Effects of composite thickness on the shear bond strength to dentin. (6/354)

The manufacturers of some condensable posterior composites claim that their products can be placed in bulk and light-cured in 5-mm-thick increments. This study compared the shear bond strengths of three composite resins when bonded to dentin in 2- and 5-mm-thick increments. Overall the bond strengths were adversely affected by the composite thickness (p < 0.0001). The shear bond strength of each composite tested was much lower when polymerized in a 5-mm increment than in a 2-mm increment of composite (p < or = 0.0005). The two condensable composites tested had a lower bond strength than the conventional composite when polymerized in a 5-mm bulk increment (p < or = 0.01).  (+info)

Cytotoxicity of dental resin monomers in the presence of S9 mix enzymes. (7/354)

The purpose of the this study was to evaluate the cytotoxicity of dental resin monomers in the presence of a rat liver S9 mix containing cytochrome P 450 enzymes. JTC-12 cells derived from a monkey kidney were seeded on a 96-well multi-well-plate at 9 x 10(3) cells per well. After cultivation, the S9 mix was added to the wells as an S9 mix group (+S9), and PBS- was added to the other wells as a none-S9 mix group (-S9), then 7 different concentrations of various monomers were added to each well. All the specimens were cultured for another 24 hrs. The cell survival ratios (CSR) were calculated by using a neutral red cytotoxicity assay. CSR for 50 micrograms/mL of Bis-GMA/S9 mix was 92.6% while for none-S9 mix it was 6.6%. The values of CSR for UDMA, Bis-MPEPP, EGDMA, TEGDMA, DMAEM, 4-META and HEMA exhibited a reduction in cytotoxicity in the presence of the S9 mix. There were significant differences between +S9 and -S9 for respective monomers (p < 0.05). However, there were no significant differences between +S9 and -S9 for MMA (p < 0.05).  (+info)

Analysis of major components contained in Bis-GMA monomer. (8/354)

The major components contained in commercial Bis-GMA monomer were isolated by thin layer chromatography (TLC) and identified by NMR and high resolution mass spectroscopy. In addition to the two major components already known (Bis-GMA and Iso-bis-GMA), an unknown hydrophilic third major component was isolated and identified as 2,2-[4-(2-hydroxy-3- methacryloyloxy-1-propoxy)-4'-(2,3-dihydroxy-1-propoxy)]dipheny lpropane. This compound was designated as BIS-GMA-H, because it has a structure of Bis-GMA with one of which methacrylic ester bond hydrolyzed.  (+info)

The Lewis structure for part a of 4.23 (OSbCl3) shows Sb as the central atom with four single bonds and O has 3 lone pairs. Would an acceptable structure also be a double bond for O and 2 lone pairs or is there a specific reason why O has 3 lone pairs and not 2 ...
Restorations will be placed on four primary molar teeth with occlusal caries, in a split mouth design. 100 patients will be included in the study. The teeth will be randomized into four groups according to the restorative materials.. Group 1: SDF (Riva Star) + Giomer (Beautifil II, (Shofu Dental, Tokyo, Japan) Group 2: Giomer (Beautifil II, (Shofu Dental, Tokyo, Japan) Group 3: SDF (Riva Star) + GIC (Equia Forte, GC, Japan) Group 4: GIC (Equia Forte, GC, Japan). The restorations will be evaluated clinically at baseline and 6., 12., 18., 24. months and radiologically at 6., 12. and 24. months. The modified US Public Health Service criteria (secondary caries, marginal integrity, marginal discoloration and retention) will be used for clinical evaluation of restorations. Intra-oral photos will be taken directly after treatment and at control appointments.. The data will be analysed statistically using Wilcoxon test, chi square test and the Kaplan-Meier survival method will be used to estimate ...
Lelia Gheorghita, Mihaela tuculina, Oana Diaconu, Victoria Andrei, Iren Moraru, Marilena Bataiosu Odontotherapy-Endodontics Departament, Faculty of Dental Medicine, University of Medicine and Farmacy of Craiova Abstract The purpose of this paper is to prove that corect access cavity is an important step in endodontic treatment and all the other steps depend on this preliminary phase.Material and method. In our study we used a number of 50 monoradicular and pluriradicular teeth, with different grades of radicular curvature
Buy 20 refills of beautifil flow plus syringes & get 2 beautibond bottles (07-6342943) ou unit dose (07-6342976) free from stock **** Achetez 20 recharges de beautiful flow plus syringes et obtenez 2 bouteilles de beautibond (07-6342943) ou dose unitaire (07-6342976) provenant des stocks ...
Chelates need to have single bonds and lone pairs in their structures to be able to surround a TM in a ring shape. You can see that the four acetates in this structure are bonded to the N atoms with single bonds, and the N atoms have lone pairs. This single C-N bond will allow the molecule to rotate, and the lone pairs on the Ns will bond to a TM like Co2+, making the compound a chelate ...
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InChI requires a little more explanation: 1S is version 1 of Standard InChi (more about that later). C2H6 is the empirical formula and tells you that the first two atoms are C atoms. c1-2 means that atom 1 and 2 are connected. h1-2H3 means that atom 1-2 each have 3 H atoms. Programs that read SMILES strings are smart enough to know that this means that the two C atoms are connected by a single bond ...
There are three rounds of recruitment each year for GP training, dates as follows:. Round 1 - applications open in autumn/winter (November/December) for jobs starting the following August. The SRA is usually first week of January, with the Selection Centre taking place in the first 2 weeks of February.. Round 1 Re-advert - applications open in the spring (March/April) for jobs starting in August the same year. The SRA is usually late April with the Selection Centre in early May. This used to be known as Round 2.. Round 2 - applications open in August for jobs starting the following February. The SRA is in mid-September and the Selection Centre about 2 weeks later. This was previously known as Round 3.. Jobs that are unfilled from Round 1 are available in Round 1 Re-advert for both new applicants and those who applied in Round 1 but were unsuccessful. All jobs start in August.. The jobs available in Round 2 are jobs unfilled by the previous two rounds of recruitment - jobs start in ...
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The A1U10 group showed significantly lower mean hardness than the other two groups (A1U20 and A1U40) for the U surface of this composite resin shade (A1) (£0.05). At the L surface of A1 shade a significantly higher mean hardness was found at 40 s irradiation time (A1L40) than for the A1L10 and A1L20 groups, which means that values were also statistically different (p£0.05). Both surfaces (U and L) of A3 shade composite revealed significantly greater mean hardness values at 40 s curing time, followed by the 20-s and the 10-s curing time groups (p£0.05). Statistically significant differences were found between U and L surfaces of each composite shade-IT combination (p=0.0001) and among the irradiation times of same shade-surface combination (p=0.0001), except between A1U20 and A1U40 groups. DISCUSSION. The polymerization of light-cured composite resins starts and is sustained when the rate of delivery photons from the source of light is sufficient to maintain the photo-absorbing compound, ...
div class=citation vocab=http://schema.org/,,i class=fa fa-external-link-square fa-fw,,/i, Data from ,span resource=http://link.bu.edu/portal/Some-organic-solvents-resin-monomers-and/VWZSE5kAx4k/ typeof=Book http://bibfra.me/vocab/lite/Item,,span property=name http://bibfra.me/vocab/lite/label,,a href=http://link.bu.edu/portal/Some-organic-solvents-resin-monomers-and/VWZSE5kAx4k/,Some organic solvents, resin monomers, and related compounds, pigments, and occupational exposures in paint manufacture and painting,/a,,/span, - ,span property=potentialAction typeOf=OrganizeAction,,span property=agent typeof=LibrarySystem http://library.link/vocab/LibrarySystem resource=http://link.bu.edu/,,span property=name http://bibfra.me/vocab/lite/label,,a property=url href=http://link.bu.edu/,Boston University Libraries,/a,,/span,,/span,,/span,,/span,,/div ...
Global Photoinitiators report 2017, forthcoming industry trends and provides segmentation based on keyplayers, type, application, regions
Aristotle University of Thessaloniki. Aristotle University of Thessaloniki - ΙΚΕΕ .Master thesis.2016 . Creators: Παπά, Πολυξένη Ευάγγελου.Σκοπός της παρούσας διπλωματικής εργασίας είναι η μελέτη της επίδρασης των διαλυτών παραγόντων (=secretome) των DPSCs στις διαδικασίες παραγωγής ενασβεστιωμένου επανορθωτικού ιστού από βλαστοκύτταρα οδοντικού πολφού που εκτέθηκαν στο ρητινώδες μονομερές TEGDMA. Η επίδραση του conditioned medium (CM) στην ικανότητα παραγωγής ενασβεστιωμένου επανορθωτικού ιστού από βαλστοκύτταρα του οδοντικού πολφού που εκτέθηκαν σε υποτοξικές συγκεντρώσεις του ρητινώδους μονομερούς TEGDMA
Early buyers will receive 10% customization on reports.. Technological advancements are expected to fuel the demand for adhesives & sealants in mature markets, such as North America and Europe. Properties such as less cure time, increased performance benefits such as high-performing seals, better adhesion to a variety of substrates, and resistance to chemicals, and various innovations in adhesive and sealant products are expected to drive the growth of the market in near future. The adhesives market is shifting from traditional solvent-based adhesives to high-performance products such as reactive hot-melts and pressure-sensitive hot-melt adhesives, driven by the requirement of superior performance.. Based on application, the paper & packaging application is projected to lead the adhesives & sealants market during the forecast period. Paper & packaging was the largest application segment of the adhesives & sealants market in 2015. Increasing demand for consumer goods in several countries across ...
Within the last 10 years, photochemistry has begun to be used in the field of dental materials for the photocuring of methacrylate monomers. The current applications are the photocuring of 1)...
View Notes - Chapter 3 from CHE 201 at SUNY Buffalo. Alkane Formulas All C-C single bonds Saturated with hydrogens Ratio: CnH2n+2 Alkane homologs: CH3(CH2)nCH3 Same ratio for branched
BJD care and maintenance tips. Instructions on how to safely use acetone to remove face-ups, blushing and glued magnets on resin ball jointed dolls.
It looks like the sealant is more in one side than the other and occlusion is not adjusted after getting the sealant. You shoild visit the dentist who has done this and get the occlusion adjusted. if you do not get it done then the teeth which are coming in occluson and pressure is more can start hurting you. For more info on sealants you can visit the following link on our website........http://www.identalhub.com/article_pit-and-fissure-sealant-251.aspx. ...
Description This is a graph of two plotted functions. The graph demonstrates Origins Fill Area Under Curve > Fill to next data plot - Above Below Colors feature. Enabling this option fills the area between two plots, fill color being dependent upon which is greater: 2x3-x2-5x or -(x)2 + 3x.. The unfilled area where x≥1 is accomplished by plotting those portions of the two functions separately. ...
Founded 90 years ago in Kurashiki, Japan, the company boasts an annual turnover of more than 3.7 billion together with a workforce of over 8,300.
INTRODUCTION. Light-cured composite resins are being more used specially because they are aesthetically advantageous and enable to be polymerized by physical and chemical activators8,30. However, the crucial point to be reached during restorative dentistry procedures with composite resins is to obtain satisfactory restorations with an adequate light activation technique24.. Composites consist mainly of filler particles and a resin matrix based on different monomers6. Currently, the most widely marketed composite resins are based on the polymerization of bisphenol A glycol dimethacrylate (Bis-GMA) and urethane dimethacrylate (UDMA)25. The curing process occurs in the organic matrix where there is a monomer-polymer conversion through an activation mechanism8. However, an insufficient degree of conversion directly affects the physical properties and chemical stability of material8. Polymers used in the composition of composite resins may absorb water and chemicals from the oral environment ...
TY - JOUR. T1 - Paucity of nanolayering in resin-dentin interfaces of MDP-based adhesives. AU - Tian, Fucong. AU - Zhou, L.. AU - Zhang, Z.. AU - Niu, L.. AU - Zhang, L.. AU - Chen, C.. AU - Zhou, J.. AU - Yang, H.. AU - Wang, X.. AU - Fu, B.. AU - Huang, C.. AU - Pashley, David Henry. AU - Tay, Franklin Chi Meng. PY - 2016/1/1. Y1 - 2016/1/1. N2 - Self-assembled nanolayering structures have been reported in resin-dentin interfaces created by adhesives that contain 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP). These structures have been hypothesized to contribute to bond durability. The objective of the present study was to determine the extent of nanolayering in resin-dentin interfaces after application of commercialized 10-MDP-containing self-etch and universal adhesives to human dentin. Seven commercialized adhesives were examined: Adhese Universal (Ivoclar-Vivadent), All-Bond Universal (Bisco, Inc.), Clearfil SE Bond 2, Clearfil S3 Bond Plus, Clearfil Universal Bond (all from ...
BackgroundLight curing of resin composite is associated with a thermal rise that may have harmful effect on the health of the vital pulp. In addition, desirable polymerization is important to achieve mechanical properties and clinical function. The purpose of this in‑vitro study was to compare the thermal rise under normal dentin during photopolymerization and degree of conversion (DC) of bulk fill and conventional resin composite using continuous high‑ and soft‑start mode.Materials and MethodsIn this in‑vitro study, Cl I cavities with a dimension of 4 mm × 4 mm × 4 mm and remaining dentin thickness of 1 mm were prepared on 56 extracted human molars. The temperature rise during the light curing of conventional resin composite (Tetric N Ceram, Ivoclar Vivadent) by incremental filling technique and bulk‑fill resin composite (Tetric N Ceram Bulk Fill, Ivoclar Vivadent) by bulk‑filling technique were measured with a K‑type thermocouple wire. DC of both resin composites was measured
Dental adhesive system formulations fundamentally contain resin monomers, polymerization initiators, inhibitors or stabilizers, solvents and sometimes inorganic fillers . According to their chemical structures, these components may exhibit hydrophobic or hydrophilic behavior . The hydrophilic components, such as 2-hydroxyethylmethacrylate (HEMA), are required to increase monomer infiltration into wet and demineralized dentin . However, the hydrophobic components used in these materials, such as bisphenol A glycidyldimethacrylate (Bis-GMA), are known to be responsible for enhancing the mechanical properties of the formulation and its compatibility with restorative composites or resin cements . Resin monomer infiltration into the spaces around exposed collagen fibrils depends on the results of dentin demineralization before hybrid layer formation . This interface must exhibit bond strength values that are sufficiently high to counteract the stresses generated by polymerization shrinkage and ...
Page contains details about CHX-loaded human serum albumin nanoparticles/dental adhesive resin composite . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
Solitaire composite resin: a condensable composite resin that can be placed 67% faster than conventional hybrid composite resins & produces superior interproximal contacts
Compounds of the formula RG--A--IN wherein IN is a photoinitiator basic structure A is a spacer group and RG is a functional reactive group can be employed as coreactive photoinitiators for photo-polymerization of systems containing ethylenically unsaturated compounds.
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NAFEMS Focus on Composites GLASGOW, UK, JANUARY 12TH 2010: In response to a recent upsurge of interest in composites analysis, NAFEMS, the International Association for the Engineering Analysis Community, has put together a series of events focusing on the subject, to give NAFEMS Members and the analysis community in general the opportunity to learn more about this topic, and share experiences with fellow analysts. Many designs now use composite structures or components, taking
Arithmetic operations are performed on composite operands that include plural component data items. The operations obtain valid results even though the operations would ordinarily produce inter-component signals, such as carry or borrow signals or a shifted bit, causing invalid results. For example, the component data items can be pixel values or other data relating to pixels in an image. Instructions on a storage medium can be accessed and executed by a processor to obtain valid results despite intercomponent signals. Or special circuitry, such as gating circuitry or a mask register, can be used to prevent inter-component signals. Components in composite operands can be separated by buffer bits that are cleared or set to ensure valid results. Values of components can be biased before an operation to obtain valid results.
Streambanks can be a significant source of sediment and phosphorus to aquatic ecosystems. Although the streambank-erosion routine in the Soil and Water Assessment Tool (SWAT) has improved in recent versions, the recently developed routine in SWAT 2012 has undergone limited testing, and the lack of site or watershed specific streambank data increases the uncertainty in the streambank-erosion predictions. There were two primary objectives of this research: (1) modify and test the 2012 SWAT streambank-erosion routine on composite streambanks, and (2) compare SWAT default and field-measured channel parameters and assess their influence on predicted streambank erosion. Three modifications were made to the SWAT 2012 streambank-erosion routine: (1) replacing the empirical effective shear stress equation with a process-based equation, (2) replacing bankfull width and depth measurements with top width and streambank height, and (3) incorporating an area-adjustment factor to account for non-trapezoidal ...
How to Treat Tooth Enamel Loss. Enamel is the outermost layer that covers the crown of the teeth. It is thin, translucent and the hardest tissue in the body. Enamel acts as a protective layer helping to safeguard the teeth while they...
In this video article dedicated to the finishing and polishing of composite resin restorations, we will address the direct & indirect restorations in ...
Sigma-Aldrich offers abstracts and full-text articles by [Fengwei Liu, Xiaoze Jiang, Shuang Bao, Ruili Wang, Bin Sun, Meifang Zhu].
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Buy quality Adhesives & Sealants products from more than 22356 Adhesives & Sealants manufacturers and Adhesives & Sealants suppliers provided by ccnmag.com .
Prefabricated, transparent strip crown forms for primary anterior applications. The strip crowns are ideal for use with chemical or light-cured composites. Refills of individual primary anterior strip crowns are available in boxes of five.
Buy fillers & sealants at Wilko. Browse a great selection of filler, grout, tiling, sealant and caulk supplies. Free Order & Collect.
Buy fillers & sealants at Wilko. Browse a great selection of filler, grout, tiling, sealant and caulk supplies. Free Order & Collect.
Learn more about the Centers findings on bisphenol-A (BPA) and what you can do to limit your exposure to this harmful chemical.
polymer sealants 제조업체 주소록 - EC21에는 세계곳곳에서 등록한 3,000,000개의 polymer sealants 수입업체, 수출업체, 제조업체, 공급업체, 도매업체, 유통업체, 무역회사, 셀러 등이 있습니다. EC21을 통해 쉽게 거래선을 발굴 하세요.
[116 Pages Report] Check for Discount on Indonesia Automotive Adhesives and Sealants Market Report 2016 report by QYResearch Group. Notes: Sales, means the sales volume of Automotive Adhesives and...
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By Emma Thelwell The Royal College of Nursing claims that there are nearly 20,000 unfilled nursing posts in England, putting patients at risk. FactCheck rolls up its sleeves to find out how unhealthy nursing numbers really are.. ...
You are at: Home » Products » Adhesive and Sealant » SealantIn total 717054 number ofProductsinfo,Released today. 0 number of ...
Optimum Nutrition - Glutamine Powder 300 grams lutamine is the most abundant amino acid in the body, comprising more than 60% of the free amino aci...
Looking for online definition of Methyl Methacrylate Monomer in the Medical Dictionary? Methyl Methacrylate Monomer explanation free. What is Methyl Methacrylate Monomer? Meaning of Methyl Methacrylate Monomer medical term. What does Methyl Methacrylate Monomer mean?
Cosmetics. The Triethylene Glycol Rosinate report provides the past, present and future industry trends and the forecast information related to the expected Triethylene Glycol Rosinate sales revenue, Triethylene Glycol Rosinate growth, Triethylene Glycol Rosinate demand and supply scenario. Furthermore, the opportunities and the threats to the development of Triethylene Glycol Rosinate market are also covered at depth in this research document.. Initially, the Triethylene Glycol Rosinate manufacturing analysis of the major industry players based on their company profiles, annual revenue, sales margin, growth aspects is also covered in this report, which will help other Triethylene Glycol Rosinate market players in driving business insights.. To Download A Sample Of The Report Click Here: https://market.biz/report/global-triethylene-glycol-rosinate-market-2017/148596/#requestforsample. Key Emphasizes Of The Triethylene Glycol Rosinate Market:. The fundamental details related to Triethylene Glycol ...
In the past several decades the problem of longevity and durability of adhesive interfaces between hard tooth tissues and composite resin-based materials are of great interest among dental researchers and clinicians. These parameters are partially determined by adhesive system mechanical properties. In the present research project nanoindentation has been examined to test hardness of dental adhesive systems. A series of laboratory experiments was performed to study the effect of light curing time and oxygen inhibition phenomenon on light-cured adhesive material hardness. An adhesive system AdperTM Single Bond (3M ESPE) was selected as a material for testing. The analysis of experimental data revealed that the maximum values of hardness were observed after the material had been light-cured for 20 seconds, as outlined in guidelines for polymerization time of the adhesive system. The experimental studies of oxygen inhibition influence on adhesive system hardness pointed out to the fact that the ...
Direct bonding of orthodontic brackets is an established procedure and has lead to increasing number of light-cured bonding materials produced with ever-increasing bond strength and ease of delivery. However, considerably less attention is given to biocompatibility of these materials. Both in vivo and in vitro studies indicate orthodontic bonding agents are cytotoxic. Spectrophotometric analysis revealed that these resins contained a great amount of potentially toxic, leachable, un-polymerized material, even when fully cured. Hypothesis: Different light-cured bonding agents may have different cytotoxic effects depending on their chemistry. Objective: Compare and analyze the toxicity of three different light-cured bonding agents to a population of gingival cells as measured by cell growth, and viability in vitro. Method: Light Bond®, MonoLok®, and Transbond XT® orthodontic adhesives were tested. Human gingival cells were obtained from extracted third molars, pooled, and expanded until needed. ...
Aesthetic and Cosmetic dentistry can be a life changing experience for many people as it can restore confidence and self-esteem simply by improving their smile.. This gallery exhibits a range of results that Dr McIntosh (Angela) has achieved since opening Pearly Whites Dental in May 2014 to demonstrate examples of both simple and complex smile Aesthetic and Cosmetic restoration treatments and potential outcomes. Smiles in these photos have been primarily treated using modern composite resin where Angela has used her artistic and technical skills to create beautiful smiles. Angela sculptures teeth to look natural and provides effective, high quality alternatives to expensive traditional and overseas treatments that are often not in the reach of the average persons budget. Individual needs and results for Aesthetic and Cosmetic dentistry can vary and a consultation with Angela is necessary. A consultation will provide you with a selection of options to improve your smile whether it may be a ...
An electroconductive resin composite is produced by polymerizing at least one monomer a polymer of which is electroconductive in a matrix of a resin which exhibits the anisotropy in the melt phase to form a composite of the obtained polymer and the resin. The resin composite is obtained in the form of film and a moulded article.
Find Laminating Adhesives and Composite Resins on GlobalSpec by specifications. Laminating adhesives and composite resins are cured using heat and/or heat and pressure.
Although an aging U.S. population is putting a strain on Social Security and Medicare, it may offer riches for some adhesive and sealant suppliers. Demand for medical and dental adhesives and sealants in the U.S. is forecast to rise 8.4% per y
Graph and download revisions to economic data for from Jun 2004 to Oct 2020 about unfilled orders, diffusion, orders, TX, indexes, and USA.
Monomer-Polymer & Dajac Laboratories Inc. is a manufacturer and supplier of specality monomers, speciality polyners, diagnoctic reagents, flourinated monomers, reactive surfactants, epoxy resins and oligomers and other speciality chemicals.
Buy GC FUJI Products Online at Dentbay. We deal in GC Fuji Cements, varnish, Gc fuji varnish, Gc fuji 1, Gc fuji ix gp extra, Gc fuji 2, gc fuji type 1, gc fuji cement.
It is with regret that Lucite International has had to implement a sales control on MMA, MAA and nBMA manufactured at its Cassel site in northeast England. This is as a result of a technical issue, which has required a temporary shutdown in order for it to be resolved. Our customers and their businesses remain of the utmost importance to us. Available product from the site is being allocated on a fair and reasonable basis, and in compliance with contract commitments. We are maintaining regular contact with our customers to ensure they are made aware of progress and are continuing to do all we can to mitigate the impact on everyone concerned.. ...
The aim of this in-vitro study was to investigate the influence of fillers in resin composites on the initial bacterial adhesion. For this investigation the strains of S. mutans and S. sanguinis ere used. Additionally, the influence of a pellicle, the inhibitor BHT and silane-treatment of the filler on the bacterial adhesion were examined. The adhesion of the two strains S. mutans and S. sanguinis was also compared. The 13 tested materials were experimental composites, based on the same monomer matrix. One of the composites was without fillers (Grundmasse). The other twelve composites showed a filler-weight fraction of 30%. Two different materials of fillers were used (SiO2, Ba-Al-B-Silikat) with different specific surfaces (0,6 to 150 m2/g). Two materials (K6 0% BHT, K6 1% BHT) differed in silane-treatment of the fillers (silane-treated or not silane-treated). For six composites (Ox 50, R709, DT4, GK 0,7 UF silane-treated, K6 silane-treated, K6 not silane-treated) there was a difference in the ...
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Using Rheology to Formulate Sealants. Street, C.; Frazee, G.; Fredrickson, C.; Harvey, I.; Killilea, T. H. // Adhesives & Sealants Industry;Apr2015, Vol. 22 Issue 4, p46 The article discusses the association between raw material variables and the rheological and application properties of formulated sealants. Topics include the rheological terms relevant to sealants, the conventional tests for wet sealants and the influence of formulation components on wet... ...
Dr. Vistasp Karbhari, a professor of structural engineering at UC San Diego, has quadrupled the strength of dental composites, thanks to a material similar
Product name: Triethylene glycol Molecular Formula: C6H14O4 CAS number: 112-27-6 H.S. Code: 2909499000 Appearance: Colorless, odorless,
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Lovely Detailed Decorative Hand-carved India Sweetest Sri Krishna - The Butter Thief on Resin Statue on a Hand-carved Soapstone Base. As Krishna grew older and bigger, He often wore only a golden chain around His waist, which tinkled and jangled as he walked. He always wondered,
Sealants actually were developed about 50 years ago, but didnt become commonly used until the 1970s. Today, sealants are becoming widely popular and effective; young children are great candidates for preventative measures like sealants because in many cases, decay has not set in. Even on teeth where decay is present, sealants have been shown to fight additional damage ...
Utilizing Intraoral Scanning, Formlabs, Meshmixer, and Blue Sky Bio Plan to Utilize 3D Printing for Restorative and Surgery Based Dental Practice!
After several years of stagnant growth, the adhesives and sealants market is undergoing a period of recovery and rebirth. The global market is valued at nearly $22 billion in 2011, up from $19.5 billion in 2006. Sealants (both structural and non-stru...
DuPont™ Sealant For Tyvek® Fluid Applied System is an elastomeric sealant for use around windows, doors and penetrations in commercial buildings.
San Jose, California -- (Vocus/PRWEB) February 21, 2011 -- GIA announces the release of a comprehensive report on the US Medical Adhesives and Sealants market.
Hibond Adhesives (India) Pvt Ltd offers a range of Pipe Sealants. These seal and lock threaded pipes and fittings. The correct anaerobic pipe...
[126 Pages Report] Check for Discount on Global Albumin-based Sealants Sales Market Report 2016 report by QYResearch Group. Notes: Sales, means the sales volume of Albumin-based Sealants...
...Fuji is a lensmaker. Sony isnt. Fuji makes a fairly complete, fairly well-thought-out, fairly sensible line of lenses for its X-mount, some of which are astoundingly beautiful. And you can have a fair amount of confidence that it will keep...
To interpret in a saintlike relief, your lungs staleness oldest be fundamentally unfilled. Thus the key to efficacious snorting lies in exhalingpletely. A awash breath begins with the berth bureau, proceeds to the midsection chest and finishes with tightening the abdominal muscles ...
Understood. As the point person for compiling these lists each season, could you provide some context to the figures on page 1 of this thread? Is this a lot more openings than usual now that the season is almost here, or is this about the norm? With many schools having less funding, can we assume any job unfilled this late is just not going to be filled this year, or will a lot of these positions end up being filled before the first game ...
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Pruning sealant Ive heard that pruning sealant is not recommended anymore. Is this true? -- KansasYour question demonstrates the power and persistence of myth. While it may be true that some
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... (bisphenol A-glycidyl methacrylate) is a resin commonly used in dental composite, dental sealants. and dental cement. ... It is the diester derived from methacrylic acid and the bisphenol A diglycidyl ether. Bearing two polymerizable groups, it is ... "What every dentist should known about bisphenol A". General Dentistry. 60 (5): 424-32. PMID 23032231. Soderholm KJ, Mariotti A ... have been raised about the potential for bis-GMA to break down into or be contaminated with the related compound bisphenol A. ...
Two examples of such commonly used monomers include bisphenol A-glycidyl methacrylate (BISMA) and urethane dimethacrylate (UDMA ... The liquid consists of HEMA (water miscible resin), polyacrylic acid (with pendant methacrylate groups). This can undergo both ... which contains a modified methacrylate or acrylate. ...
... bisphenol a-glycidyl methacrylate MeSH D25.720.716.822.308.300 - compomers MeSH D25.720.716.822.461 - epoxy resins MeSH D25.720 ... bisphenol a-glycidyl methacrylate MeSH D25.339.149.300 - compomers MeSH D25.339.208 - dental alloys MeSH D25.339.208.224 - ... methyl methacrylates MeSH D25.720.716.822.111.650.605.450 - methyl methacrylate MeSH D25.720.716.822.111.650.605.500 - ... polymethyl methacrylate MeSH D25.720.716.822.111.650.750 - polyhydroxyethyl methacrylate MeSH D25.720.716.822.300 - bone ...
... methacrylates MeSH D02.241.081.069.600.150 - bisphenol a-glycidyl methacrylate MeSH D02.241.081.069.800 - polymethacrylic acids ... methyl methacrylate MeSH D02.241.081.069.800.550.500 - polymethyl methacrylate MeSH D02.241.081.069.800.700 - polyhydroxyethyl ... polyhydroxyethyl methacrylate MeSH D02.033.455.250.700.690 - polysorbates MeSH D02.033.455.706 - propylene glycols MeSH D02.033 ... methacrylate MeSH D02.241.081.069.920 - urocanic acid MeSH D02.241.081.160.050 - aminobutyric acids MeSH D02.241.081.160. ...
It consists of methacrylate and dimethacrylate monomers (e.g. bisphenol A-glycidyl methacrylate (Bis-GMA), urethane ... The addition of polymerisable resins (hydrophilic methacrylate monomers) results in higher compressive and tensile strength, as ... its methacrylate constituent causes it to undergo polymerisation shrinkage when setting. The strain introduced by the shrinkage ...
... bisphenol a-glycidyl methacrylate MeSH D05.750.716.822.308.300 - compomers MeSH D05.750.716.822.461 - epoxy resins MeSH D05.750 ... methyl methacrylates MeSH D05.750.716.822.111.650.605.450 - methyl methacrylate MeSH D05.750.716.822.111.650.605.500 - ... polymethyl methacrylate MeSH D05.750.716.822.111.650.750 - polyhydroxyethyl methacrylate MeSH D05.750.716.822.300 - bone ... polyhydroxyethyl methacrylate MeSH D05.750.741.700 - polysorbates MeSH D05.750.900.850 - silicones MeSH D05.750.900.850.150 - ...
... such as a bisphenol A-glycidyl methacrylate (BISGMA), urethane dimethacrylate (UDMA) or semi-crystalline polyceram (PEX), and ... The activator present in light activated composite is diethyl-amino-ethyl-methacrylate (amine) or diketone. They interact when ...
While typical home epoxies contain diglycidyl ether of bisphenol A (DGEBA), glycidyl methacrylate is instead used to provide ... Glycidyl methacrylate (GMA) is an ester of methacrylic acid and glycidol, it is a common monomer used in the creation of epoxy ... Glycidyl methacrylate is produced by several companies worldwide, including Dow Chemical. Acrylate polymer Acrylate ... Methacrylate ChemExper.com Dow Chemical Marketing Page, retrieved November 2015. ...
Talk:Bisphenol A-glycidyl methacrylate. *Talk:Bisphosphonate-associated osteonecrosis of the jaw ...
Two examples of such commonly used monomers include bisphenol A-glycidyl methacrylate (BISMA) and urethane dimethacrylate (UDMA ... which contains a modified methacrylate or acrylate. ...
Gemfibrozil Glycidyl oleate Glycidyl stearate Guinea Green B Gyromitrin Haematite HC Blue No. 2 HC Red No. 3 HC Yellow No. 4 ... ether Bisphenol A diglycidyl ether (Aralditeâ) Bisulfites Blue VRS Brilliant Blue FCF, disodium salt Bromochloroacetonitrile ... Methylenediphenyl diisocyanate 2-Methylfluoranthene 3-Methylfluoranthene Methylglyoxal Methyl iodide Methyl methacrylate N- ... Polychlorinated dibenzofurans Polychloroprene Polyethylene Polymethylene polyphenyl isocyanate Polymethyl methacrylate ...
Gemfibrozil Glycidyl oleate Glycidyl stearate Guinea Green B Gyromitrin Haematite HC Blue No. 2 HC Red No. 3 HC Yellow No. 4 ... ether Bisphenol A diglycidyl ether (Aralditeâ) Bisulfites Blue VRS Brilliant Blue FCF, disodium salt Bromochloroacetonitrile ... Methylenediphenyl diisocyanate 2-Methylfluoranthene 3-Methylfluoranthene Methylglyoxal Methyl iodide Methyl methacrylate N- ... Polychlorinated dibenzofurans Polychloroprene Polyethylene Polymethylene polyphenyl isocyanate Polymethyl methacrylate ...
This topic contains 10 study abstracts on Bisphenol-A Toxicity indicating that the following substances may be helpful: ... Bisphenol A-glycidyl methacrylate induces a broad spectrum of DNA damage in human lymphocytes.Oct 31, 2011. ... Diseases : Bisphenol-A Toxicity, Bisphenol S Toxicity. Problem Substances : Bisphenol A , Bisphenol F, Bisphenol S, Bisphenols ... Diseases : Bisphenol-A Toxicity, Bisphenol S Toxicity, Bisphenol Toxicity. Problem Substances : Bisphenol A , Bisphenol F, ...
Bis-GMA (bisphenol A-glycidyl methacrylate) is a resin commonly used in dental composite, dental sealants. and dental cement. ... It is the diester derived from methacrylic acid and the bisphenol A diglycidyl ether. Bearing two polymerizable groups, it is ... "What every dentist should known about bisphenol A". General Dentistry. 60 (5): 424-32. PMID 23032231. Soderholm KJ, Mariotti A ... have been raised about the potential for bis-GMA to break down into or be contaminated with the related compound bisphenol A. ...
... as a natural and cost effective adsorbent for Bisphenol A (BPA), was systematically inve... ... Bisphenol A-glycidyl Methacrylate. The reaction product of bisphenol A and glycidyl methacrylate that undergoes polymerization ... Composites and Urinary Bisphenol-A Study. The Composites and Urinary Bisphenol-A Study (CUBS) is a clinical study of dental ... Bisphenol A and Muscle Insulin Sensitivity. This study examine oral bisphenol A consumption on muscle insulin sensitivity and ...
Bisphenol A-monoglycidyl ether acrylate,. *4-glycidyloxybutyl methacrylate,. *3-(glycidyl-2-oxyethoxy)-2-hydroxypropyl ... Bisphenol A ethoxylate diacrylate containing from 2 to 20 ethoxy groups,. *Bisphenol A propoxylate diacrylate containing from 2 ... The terms "(meth)acrylic" or "(meth)acrylate" are intended to cover both the acrylic/acrylate and methacrylic/methacrylate ... particularly the corresponding methacrylate; and where the alkyl acrylate, e.g., methacrylate, is identified, the corresponding ...
1565-94-2/Bisphenol A-Glycidyl Methacrylate; 39341-43-0/Snap (resin); 9011-14-7/Polymethyl Methacrylate; 94362-98-8/Protemp ... Bisphenol A-Glycidyl Methacrylate / radiation effects. Composite Resins / radiation effects. Crowns*. Dental Marginal ... Methacrylates / radiation effects. Polymers / chemistry. Polymethacrylic Acids / radiation effects. Polymethyl Methacrylate / ... 0/Acrylic Resins; 0/Composite Resins; 0/Methacrylates; 0/Polymers; 0/Polymethacrylic Acids; 0/Temphase; 0/luxatemp; ...
Allergic contact dermatitis in dental workers; [Marks] The reaction product of bisphenol A and glycidyl methacrylate that is ... Bisphenol A glycidylmethacrylate; Bisphenol A-diglycidyl-dimethyl acrylate; Bisphenol(a)glycidylmethacrylate; Nupol 1629; Nupol ... Bisphenol A glycidylmethacrylate; Bisphenol A-diglycidyl-dimethyl acrylate; Bisphenol(a)glycidylmethacrylate; Nupol 1629; Nupol ... Allergic contact dermatitis in dental workers; [Marks] The reaction product of bisphenol A and glycidyl methacrylate that is ...
Bisphenol A-Glycidyl Methacrylate / chemistry, radiation effects*. Dental Bonding*. Dental Enamel / injuries, ultrastructure. ... 0/Acrylic Resins; 0/Polymers; 0/Resin Cements; 12597-68-1/Stainless Steel; 135669-49-7/Transbond; 1565-94-2/Bisphenol A- ... Glycidyl Methacrylate; 7440-37-1/Argon; 7732-18-5/Water From MEDLINE®/PubMed®, a database of the U.S. National Library of ...
Cytotoxicity of bisphenol A glycidyl methacrylate on cytochrome P450-producing cells. J. Oral Rehabil 2003, 30, 544-549. [ ... Joskow, R; Barr, DB; Barr, JR; Calafat, AM; Needham, LL; Rubin, C. Exposure to bisphenol A from bis-glycidyl dimethacrylate- ... Bis-GMA, UDMA, TEGDMA, EGDMA DEGDMA, 1,6-hexanediol di-methacrylate, methyl methacrylate, camphoroquinone, 4-N,N- ... bisphenol A diglycidylether (6.1 pg/mg), Bis-GMA (2.0 pg/mg) and ethoxylate and propoxylate of bisphenol A from Bis-GMA-based ...
A-glycidylmethacrylate (Bis-GMA), ethoxylated bisphenol A-methacrylate (Bis-EMA), triethyleneglycoldimethacrylate (TEGDMA) and ... The release of Bisphenol A from Bis-GMA based materials such as fissure sealants and composites into saliva has been of special ... Contact allergy to (meth)acrylate was seen in 22% of the patch tested patients, with reactions to 3 predominant test substances ... Nine of the 24 were positive only to (meth)acrylates, the remaining 15 also had reactions to allergens in the standard series. ...
Bisphenol A-glycidyl methacrylate induces a broad spectrum of DNA damage in human lymphocytes. Kinga Drozdz, Daniel Wysokinski ...
Two examples of such commonly used monomers include bisphenol A-glycidyl methacrylate (BISMA) and urethane dimethacrylate (UDMA ... The liquid consists of HEMA (water miscible resin), polyacrylic acid (with pendant methacrylate groups). This can undergo both ... which contains a modified methacrylate or acrylate. ...
resin which is a reaction product of bisphenol A and a glycidyl methacrylate (bisGMA). ...
In this report, the global Tetramethyl Bisphenol A market is... ... Check for Discount on Global Tetramethyl Bisphenol A Market ... Global and Chinese Glycidyl Methacrylate Industry, 2018 Market Research Report. The Global and Chinese Glycidyl Methacrylate ... 1 Tetramethyl Bisphenol A Market Overview. 1.1 Product Overview and Scope of Tetramethyl Bisphenol A. 1.2 Tetramethyl Bisphenol ... Global Tetramethyl Bisphenol A Market Research Report 2017 Table of Contents. Global Tetramethyl Bisphenol A Market Research ...
Interaction between bisphenol A and glycidyl methacrylate is making fissure sealant. Fissure sealant is process of sealing ...
... and bis-phenol-A-glycidyl methacrylate, all of which are commercially available. ...
of a 1:2 mixture of hydroxyethyl methacrylate and the reaction product of bisphenol A and glycidyl methacrylate as described in ... of a mixture containing 60 parts of the condensation product of bisphenol A and glycidyl methacrylate and 40 parts of ... of a mixture comprising the condensation product of bisphenol A and glycidyl methacrylate, triethylene glycol dimethacrylate ... Union Carbide ERL2774 and the bisacrylate monomer prepared from glycidyl methacrylate and bisphenol A shown in U.S. Pat. No. ...
While typical epoxies contain diglycidyl ether of bisphenol A (DGEBA), glycidyl methacrylate is instead used to provide epoxy ... SPOTLIGHT ON SPECIALITY CHEMICAL GLYCIDYL METHACRYLATE(GMA). Glycidyl methacrylate is an ester of methacrylic acid and a common ... Glycidyl methacrylate monomer has dual functionality, containing both methacrylic and epoxy groups. The dual functionality of ... KOODANKULAM NUCLEAR,GENETIC EFFECTS OF RADIATION,GLYCIDYL METHACRYLATE. Highlights of Some of the Articles ...
... resin is often based on bisphenol A glycidyl methacrylate (bis-GMA, also known as Bowens monomer). Though bis-GMA ... "Forget about bisphenol-A. Resins are far more toxic on a cellular level than amalgam. Are you familiar to amalgam studies ... Filed Under: Dental Surveys Tagged With: Bisphenol A, BPA, Composite, Dental, Dental Composite, dentist, dentistry, dentists ... Bisphenol-A in Dental Composite Worries Dentists. May 20, 2008 By Jim Du Molin ...
... can also be used long chain monomers of the US-A-3066112 on the basis of bisphenol A and glycidyl methacrylate, or their by ... 2-phenyl-ethyl methacrylate, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, lauryl methacrylate, and hexanediol di (meth) ... Also suitable are compounds of the type bisphenol-A-diethyloxy (meth) acrylate and bisphenol-A-dipropyloxy (meth) acrylate is. ... meth)acrylate, einschlie lich der Cycloalkyl(meth)acrylate, Aralkyl(meth)acrylate und 2- Hydroxyalkyl(meth)acryiate, ...
... methacrylate or acrylate esters of hydroxyalkyl esters of aromatic diphenols. Polymerization is initiated in these combinations ... Restorative A is prepared from 2,2-bis(4-hydroxyphenyl)-propane (bisphenol A) and glycidyl methacrylate essentially as ... described in the above Bowen and Chang patents using 90.4 parts glycidyl methacrylate 66 parts bisphenol A and about 0.78 parts ... An adduct is made from phenyl salicylate (318 parts, 1.5 moles) with glycidyl methacrylate (113 parts, 0.83 moles) and about ...
In terms of an actual chemical compound, bisphenol-A glycidyl methacrylate (Bis-GMA), urethane dimethacrylate (UDMA) or ...
... where two moles of glycidyl methacrylate are reacted with one mole of bisphenol-A to yield Bowens Resin Bis-GMA. The molecule ... and/or bisphenol-A dimethacrylate (Bis-DMA) being used. What we dont know is how these materials behave when, excess is ... impact of resin composites has centred on the probable toxicity of uncured resin and the use of a derivative of bisphenol-A; ...
... glycidyl methacrylate, 3,4-epoxycyclohexylmethyl methacrylate and the like compounds copolymers of glycidyl allyl ether, ... Examples of the compound (B) include: compounds having epoxy group, such as epoxy resins of bisphenol type, alicyclic epoxy ... glycidyl methacrylate 14.2 17.0methacryloyloxypropyl 16.6 --trimethoxysilanen-butyl acrylate -- 23.6n-butyl methacrylate 20.0 ... trimethoxysilaneglycidyl methacrylate 28.40 -- 28.40n-buty methacrylate 20.00 20.00 24.45methyl methacrylate 27.70 51.19 --2- ...
Methacrylate-based monomers are particularly preferred, including the condensation product of bisphenol A and glycidyl ... pentaerythritol dimethacrylate, the condensation product of ethoxylated bisphenol A and glycidyl methacrylate, the condensation ... ethyleneglycol methacrylate, diethyleneglycol methacrylate, triethyleneglycol methacrylate, tetraethyleneglycol methacrylate, ... ethyleneglycol methacrylate, diethyleneglycol methacrylate, triethyleneglycol methacrylate, tetraethyleneglycol methacrylate, ...
"Proinflammatory activation of macrophages by bisphenol A-glycidyl-methacrylate involved NFκB activation via PI3K/Akt pathway," ...
The matrix has been predominated by methacrylate-based resin. The common monomers used in resin composite are bisphenol-A ... glycidyl dimethacrylate (Bis-GMA), urethane dimethacrylate (UDMA) as base monomer or oligomer and triethylene glycol ... These methacrylate based resins have a shortcoming in their degree of polymerization being not high enough, and there is also a ... 2. The BP-UDMA macromer synthesized gives a much lower viscosity compared to the commonly used methacrylate-based composite for ...
... bis-glycidyl methacrylate (bis-GMA) and Bis-A-dimethacrylate (bis-DMA) in saliva associated with the placement of certain ... Levels of Bisphenol A in Urine and Saliva Following Placement of Composite Restorations. The safety and scientific validity of ... Bisphenol A and other compounds in human saliva and urine associated with the placement of composite restorations. J Am Dent ... For bisphenol A the maximum acceptable dose is 0.05 milligrams per kilogram of body weight per day (US EPA, 1993). ...
15.3 g bisphenol A based epoxy and 10 g glycidyl methacrylate was added to 74.5 g bisphenol A glycerolate di(2-octen-1- ... 24.6 g of glycidyl methacrylate was added to 75.4 g of bisphenol A glycerolate di(2-octen-1-ylsuccinic) acid monoester and the ... 21.6 g glycidyl methacrylate and 10 g pentaerythritol tetraacrylate was added to 68.4 g bisphenol A glycerolate di(2-octen-1- ... 21.6 g glycidyl methacrylate and 10 g pentaerythritol tetraacrylate was added to 68.4 g bisphenol A glycerolate dimaleic acid ...
In X-tra fil, the organic matrix is composed mainly of bisphenol A glycidyl methacrylate (bis-GMA), urethane dimethacrylate ( ... and ethoxylated bisphenol A-methacrylate (bis-EMA), and its inorganic components (63.3% of the volume) are silica (20 nm), ... R. Guggenberger and W. Weinmann, "Exploring beyond methacrylates," Australian Dental Journal, vol. 13, pp. 82D-84D, 2000. View ...
... glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether, and 1,2-epoxy-3-allyl propane. Bisphenol-A-bis-2- ... allyl or aryl acrylate or methacrylate, glycidyl acrylte, and glycidyl methacrylate. 3. The macromolecular network of claim 2, ... Other alkene derivatives include other alkyl methacrylates, alkylacrylates, allyl or aryl acrylates and methacrylates, ... trifluoromethyl methacrylate, 2,2,2,3,4,4,4-heptafluorobutyl methacrylate, and 2,2,2,2,2,2-hexafluoroisobutyl methacrylate. ...
  • ChemIDplus] "Dental composite resins, UV-curable printing inks, and some glues contain epoxy acrylates such as bis-GMA and bis-GA." [Kanerva, p. 543] Bis-GMA was first developed in the 1960s as the first epoxy methacrylate for dental composite resins. (nih.gov)
  • Concerns have been raised about the potential for bis-GMA to break down into or be contaminated with the related compound bisphenol A. However, no negative health effects of bis-GMA use in dental resins have been found. (wikipedia.org)
  • Background: Bisphenol A [BPA] is a xenoestrogen [environmental estrogens] used in the production of polycarbonate plastics and epoxy resins that line food and beverage cans. (bvsalud.org)
  • The objective of this study is to make strong and durable dental adhesives that are free from 2 symbolic methacrylate-based dental resins-2-bis[4-(2-hydroxy-3-methacryl-oxypropoxy)-phenyl]-propane (Bis-GMA) and 2-hydroxyethyl-methacrylate (HEMA)-and have equivalent/improved bonding strength and durability. (elsevier.com)
  • The majority of these incorporated halophosphorous esters of unfilled resins such as bisphenol-A glycidyl methacrylate (bis-GMA) and hydroxyethyl methacrylate (HEMA). (cdeworld.com)
  • Methods: Circular specimens (5 x 2 mm) were manufactured from methacrylate and silorane composite resins, and light-cured at 19.8, 27.8, 39.6, and 55.6 J/cm2, using second-generation LED at 1,390 mW/cm2. (bvsalud.org)
  • Most of these products consist of a mixture of various methacrylate monomers, such as BisGMA (2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane) and UDMA (urethane dimethacrylate) in combination with comonomers of lower viscosity, such as TEGDMA (triethyleneglycol dimethacrylate), EGDMA (ethyleneglycol dimethacrylate) or DEGDMA (diethyleneglycol dimethacrylate) [ 1 - 3 ]. (mdpi.com)
  • Bis-GMA is an extremely viscous liquid which needs to be thinned, before processing into commercial products, with diluting co-monomers such as triethyleneglycoldimethacryate (TEGDMA) and/or bisphenol-A dimethacrylate (Bis-DMA) being used. (ucc.ie)
  • 3. The dental restorative composition of claim 1, wherein the polymerizable component comprises at least one monomer or prepolymer selected from the group consisting of 2,2'-bis [4-(3-methacryloxy-2-hydroxy propoxy)-phenyl]-propane, dipentaerythritol pentaacrylate, pentaerythritol dimethacrylate, the condensation product of ethoxylated bisphenol A and glycidyl methacrylate, the condensation product of 2 parts hydroxymethylmethacrylate and 1 part triethylene glycol bis(chloroformate), and polyurethane dimethacrylates. (freepatentsonline.com)
  • A study by Olea et al in 1996 reported quantities of specific estrogenic compounds, Bisphenol A (BPA), bis-glycidyl methacrylate (bis-GMA) and Bis-A-dimethacrylate (bis-DMA) in saliva associated with the placement of certain dental sealants. (clinicaltrials.gov)
  • bisphenol A-glycidyl methacrylate (Bis-GMA), triethylene glycol dimethacrylate (TEGDMA), urethane dimethacrylate (UDMA, hydroxyethyl methacrylate (HEMA) or decanediol dimethacrylate (D3MA) [ 1 - 5 ]. (alliedacademies.org)
  • Bis-GMA (bisphenol-A glycidyl dimethacrylate) is the most used monomer in dental composites, however due to its high molecular weight, high viscosity and low mobility, other monomers with lower viscosity and/or higher mobility, as TEGDMA (triethylene glycol dimethacrylate) and UDMA (urethane dimethacrylate), are used to increase the degree of conversion (DC) and crosslinking of the resulting polymer 3,4 . (bvsalud.org)
  • Bisphenol A glycidylmethacrylate (BisGMA)/triethyleneglycol dimethacrylate (TEGDMA) thermosets and composites are well-known examples of biomaterials for dental applications that are receiving growing interest for orthopedic applications. (units.it)
  • The ORMOCER technology used in the manufacturing of Admira Fusion makes it highly biocompatible, as it contains none of today's classic monomers-such as bisphenol A (BPA), bisphenol A glycidyl methacrylate (bis-GMA), triethyleneglycol-dimethacrylate ( TEGDMA ), urethane dimethacrylate (UDMA), etc. (dentalhealthcenterofnorthernvirginia.com)
  • In this regard, differential release of comonomers such as BisGMA, TEGDMA, HEMA (2- hydroxethyl methacrylate) and UDMA promote the proliferation of the important apoptosis and generation of redox balancedisturbing reactive oxygen species [ 13 ]. (alliedacademies.org)
  • BisGMA, bisphenol A-glycidyl methacrylate is a common resin that carries trace amounts of BPA. (esstechinc.com)
  • The (co)monomers triethyleneglycoldimethacrylate (TEGDMA), hydroxyethylenemethacrylate (HEMA), urethanedimethacrylate (UDMA), and bisphenol A glycidyl methacrylate, usually abbreviated as bis-GMA, are common components of both resin and bonding components. (biomedcentral.com)
  • On the other hand, little improvement has been offered with respect to the resinous matrix of these materials, which is based in the majority of commercially available products on methacrylate monomers. (mdpi.com)
  • These methacrylate monomers, polymerized through radical chain polymerisation, are responsible for major clinical disadvantages, such as polymerization shrinkage of the composites, leading to microleakage phenomena in the tooth-material interface [ 4 , 5 ], as well as adverse effects caused by substances released from the resinous matrix due to incomplete polymerization or resin degradation [ 6 - 9 ]. (mdpi.com)
  • Said methacrylate and styrene monomers each have a bulky pendant moiety. (coatingsworld.com)
  • These materials are composed basically by polymeric matrix based on methacrylate monomers, inorganic filler particles, silane and photo-initiator system 3 . (bvsalud.org)
  • Silorane network is generated by cationic ringopening polymerization mechanism instead of free radical curing of methacrylate monomers 8 , and more light-curing time to form cations is required to initiate the polymerization reaction 5 . (bvsalud.org)
  • Objectives: Primers and adhesives containing hydroxyethyl methacrylate (HEMA) are placed on moist dentine even though several studies indicate that water may interfere with the polymerization reaction. (elsevier.com)
  • and HEMA which is 2-Hydroxyethyl methacrylate. (coursera.org)
  • The composition also comprises a methacrylate monomer, and optionally, a filler and a coupling agent. (patents.com)
  • Said polyacetoacetate being polymerized from a monomer mixture comprising a methacrylate monomer, a styrene monomer, or a combination thereof. (coatingsworld.com)
  • To study the effect of a low-shrinkage methacrylate monomer and monoacylphosphine oxide photoinitiator on color, translucency, and color stability of model resin-based composites (RBCs). (ac.rs)
  • Methacrylate restorative materials exhibit volumetric polymerization shrinkage 5 , ranging from 1.9 to 3.5 vol% 6 , and a significant proportion of unreacted monomer due to incomplete C=C bond conversion 7 . (bvsalud.org)
  • 2. Holographic media according to claim 1, characterized in that the olefϊnically unsaturated aromatic urethanes are urethane acrylates and/or urethane methacrylates. (sumobrain.com)
  • 6. Process according to claim 3, wherein one or more compounds of the group consisting of 2-hydroxyethyl acrylate, hydroxypropyl acrylate, 4-hydroxybutyl acrylate, poly(ε-caprolactone) mono(meth)acrylates, pentaerythrityl triacrylate and the reaction product of acrylic acid with glycidyl methacrylate are used in B). (sumobrain.com)
  • The most commonly used resin system is the result of the combination of epoxy and vinyl chemistry, where two moles of glycidyl methacrylate are reacted with one mole of bisphenol-A to yield Bowen's Resin Bis-GMA. (ucc.ie)
  • As a homopolymer, UDMA cures to form a hard, glassy surface that is low in color and bisphenol A free! (esstechinc.com)
  • A star-shape polymer of 3-armed poly(ethylene glycol) methyl ether methacrylate- co -glycidyl methacrylate copolymer (3PPEGM- co -GMA) was synthesized using an atom transfer radical polymerization (ATRP) technique. (rsc.org)
  • 8. The process as claimed in claim 1, wherein a glycidyl methacrylate copolymer with styrene, a substituted styrene or meethacrylic acid ester as the comonomer is employed as the compound which carries epoxide groups. (patentgenius.com)
  • It is the diester derived from methacrylic acid and the bisphenol A diglycidyl ether. (wikipedia.org)
  • All-solid-state interpenetrating network polymer electrolytes (INSPEs) were fabricated by simultaneous reaction of 3PPEGM- co -GMA and bisphenol A diglycidyl ether (BPDE) with polyetherdiamine (ED2003) in the presence of lithium bis(trifluoromethane) sulfonamide (LiTFSI). (rsc.org)
  • The Composites and Urinary Bisphenol-A Study (CUBS) is a clinical study of dental composite for its effects on urinary bisphenol-A levels. (bioportfolio.com)
  • An integrative review on the toxicity of Bisphenol A (BPA) released from resin composites used in dentistry. (greenmedinfo.com)
  • Nanogels are novel new macromolecules that can improve the properties of methacrylate polymer systems by reducing polymerization shrinkage and stress. (auraria.edu)
  • Dental compositions are provided of inorganic particulate material as filler, tertiary aromatic amine as accelerator and, as vehicles or binders, methacrylate or acrylate esters of hydroxyalkyl esters of aromatic diphenols. (google.com)
  • Application Data 63 v 7 Dental compositions are PI'OVldCCi of inorganic particv 1 Commuanonm'part 9 8 4 ulate material as filler, tertiary aromatic amine as ac- 1969, abandoned, WhlCh IS a COfltll'lUfitlOTl-lll-Pfll't of Ser NOS 713 318 March 15 1968 Pat NO celerator and, as vehicles or binders, methacrylate or and 744 326 Ju1y 8 acrylate esters of hydroxyalkyl esters of aromatic di- No 3,541,068. (google.com)
  • This invention relates to improved moldable dental restorative compositions comprising acrylate or methacrylate esters of hydroxyalkyl ethers, i.e., hemiethers with di-or tri-primary diols or triols, of diphenols. (google.com)
  • It has been reported that therapy with polymer-based dental filling materials was associated with higher concentrations of bisphenol A in saliva and urine directly after the treatment. (bioportfolio.com)
  • This study will determine whether placement of composite (white) dental restorations (fillings) increases concentrations of bisphenol A (BPA) and its metabolites in saliva and urine. (clinicaltrials.gov)
  • 6 ] reported detectable levels of bisphenol A (BPA) in the saliva of patients treated with dental sealants, suggesting that patients receiving this treatment could be exposed to the chemical. (biomedcentral.com)
  • The reaction product of bisphenol A and glycidyl methacrylate that undergoes polymerization when exposed to ultraviolet light or mixed with a catalyst. (bioportfolio.com)
  • Concentrations of Bisphenol A and Seven Other Phenols in Pooled Sera from 3-11 Year Old Children: 2001-2002 National Health and Nutrition Examination Survey. (greenmedinfo.com)
  • Urinary bisphenol A concentrations and their implications for human exposure in several Asian countries. (greenmedinfo.com)
  • Bisphenol A in 24 h urine and plasma samples of the German Environmental Specimen Bank from 1995 to 2009: A retrospective exposure evaluation. (greenmedinfo.com)
  • The time course of bisphenol S in plasma and urine will be monitored in female adults exposed to a single oral and dermal dose of bisphenol-S. Six female will be recruited. (bioportfolio.com)
  • For bisphenol A the maximum acceptable dose is 0.05 milligrams per kilogram of body weight per day (US EPA, 1993). (clinicaltrials.gov)
  • One dentist in four reports being very concerned about the issue of bisphenol-A (the problem chemical in water and baby bottles) in dental composite and sealants in a survey by The Wealthy Dentist. (thewealthydentist.com)
  • The chemical causing so much concern is bisphenol A , found in some (but not all) plastics. (thewealthydentist.com)
  • Hence, the development of novel chemical processes enabling the introduction of bioactive molecules on the surface of these methacrylate-based thermosets is of particular interest. (units.it)
  • What every dentist should known about bisphenol A". General Dentistry. (wikipedia.org)
  • The enormous and unexplained increase in the incidence of breast cancer corresponds with the advent of the bisphenol-A introduction into dentistry. (thewealthydentist.com)
  • Bis-GMA (bisphenol A-glycidyl methacrylate) is a resin commonly used in dental composite, dental sealants. (wikipedia.org)
  • Given the recent negative publicity surrounding bisphenol-A (BPA), our survey covered dental sealants and composite. (thewealthydentist.com)
  • When we previously surveyed dentists on the topic of bisphenol-A, we found about half of dentists were worried about BPA in dental composite and sealants . (thewealthydentist.com)
  • The aim of this study was to investigate the effect of poly bisphenol A glycidyl methacrylate (poly(Bis-GMA)) grafted hydroxyapatite whisker (PGHW) on water sorption, solubility and bioactivity of the dental resin composite. (sigmaaldrich.com)
  • This study examine oral bisphenol A consumption on muscle insulin sensitivity and hepatic glucose suppression. (bioportfolio.com)
  • Nine years later, Bowen 7 introduced a different adhesive solution using N-phenylglycine and glycidyl methacrylate (NPG-GMA). (cdeworld.com)
  • 3. The composition of claim 1 wherein the methacrylate has a Brookfield viscosity at room temperature and 20 rpm of from about 100 to about 20,000 cps. (patents.com)
  • Bisphenol A acts as an endocrine disruptor in relation to serum thyroid and reproductive hormone levels in men from an infertility clinic. (greenmedinfo.com)