Bisphenol a glycidyl methacrylate. Medical search

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)

... (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. ...

https://en.wikipedia.org/wiki/Bis-GMA

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. ...

https://en.wikipedia.org/wiki/Dental_restoration

... 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 ...

https://en.wikipedia.org/wiki/List_of_MeSH_codes_(D25)

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 ...

https://en.wikipedia.org/wiki/Luting_agent

... 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 - ...

https://en.wikipedia.org/wiki/List_of_MeSH_codes_(D05)

... 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 ...

https://en.wikipedia.org/wiki/Dental_composite

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. ...

https://en.wikipedia.org/wiki/Glycidyl_methacrylate

Talk:Bisphenol A-glycidyl methacrylate. *Talk:Bisphosphonate-associated osteonecrosis of the jaw ...

https://en.wikipedia.org/wiki/Category:WikiProject_Dentistry_articles

Two examples of such commonly used monomers include bisphenol A-glycidyl methacrylate (BISMA) and urethane dimethacrylate (UDMA ... which contains a modified methacrylate or acrylate. ...

https://en.m.wikipedia.org/wiki/Dental_restoration

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 ...

https://en.wikipedia.org/wiki/List_of_IARC_Group_3_carcinogens

https://en.wikipedia.org/wiki/List_of_IARC_Group_3_Agents_-_Not_classifiable_as_to_its_carcinogenicity_to_humans

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 ...

http://www.google.es/patents/US7189456?dq=flatulence

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, ...

https://www.greenmedinfo.com/disease/bisphenol-toxicity

... 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 ...

https://www.bioportfolio.com/resources/pmarticle/2342904/Adsorptive-removal-of-bisphenol-A-from-aqueous-solutions-using-phosphonated-levan.html

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; ...

http://www.biomedsearch.com/nih/Polymerization-shrinkage-strain-kinetics-temporary/14698778.html

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 ...

https://hazmap.nlm.nih.gov/category-details?id=1009&table=copytblagents

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 ...

http://www.biomedsearch.com/nih/Polymerization-with-argon-laser-curing/10730673.html

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 ...

http://www.mdpi.com/1422-0067/10/9/3861/htm

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. ...

http://copublications.greenfacts.org/en/dental-amalgam/l-3/5-health-effects-alternative-materials.htm

Bisphenol A-glycidyl methacrylate induces a broad spectrum of DNA damage in human lymphocytes. Kinga Drozdz, Daniel Wysokinski ...

https://www.semanticscholar.org/paper/Detection-of-purine-lesions-in-cellular-DNA-using-Evans-Podmore/600b8330cba88a38037a91eaf829b71d87903cf9

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. ...

https://en.wikipedia.org/wiki/Bis-GMA

resin which is a reaction product of bisphenol A and a glycidyl methacrylate (bisGMA). ...

https://www.studystack.com/flashcard-883839

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 ...

http://www.reportsnreports.com/reports/1211813-global-tetramethyl-bisphenol-a-market-research-report-2017.html

Interaction between bisphenol A and glycidyl methacrylate is making fissure sealant. Fissure sealant is process of sealing ...

http://online-vitamins-guide.com/dental/fissure-sealants.htm

... and bis-phenol-A-glycidyl methacrylate, all of which are commercially available. ...

http://www.google.com/patents/US5766012?dq=4052565

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. ...

http://www.google.es/patents/US4097935?dq=flatulence

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 ...

http://www.nandinichemical.com/journal/journal.php/JOURNAL-2011/November

https://en.wikipedia.org/wiki/Dental_restoration

... 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 ...

http://www.thewealthydentist.com/blog/tag/composite/

... 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, ...

http://www.google.co.uk/patents/WO2000038619A2?cl=en

... 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 ...

https://patents.google.com/patent/US3860556A/en

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 ...

http://www.google.com.au/patents/US20020014703

In terms of an actual chemical compound, bisphenol-A glycidyl methacrylate (Bis-GMA), urethane dimethacrylate (UDMA) or ...

https://www.animated-teeth.com/tooth-bonding/a13-tooth-bonding-enamel.htm

... 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; ...

https://www.ucc.ie/en/ohsrc/research/epaproject/

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 ...

http://www.freepatentsonline.com/y2012/0271027.html

... methyl ether methacrylate-co-glycidyl methacrylate copolymer (3PPEGM-co-GMA) was synthesized using an atom transfer radical ... A star-shape polymer of 3-armed poly(ethylene glycol) methyl ether methacrylate-co-glycidyl methacrylate copolymer (3PPEGM-co- ... co-GMA and bisphenol A diglycidyl ether (BPDE) with polyetherdiamine (ED2003) in the presence of lithium bis(trifluoromethane) ...

https://pubs.rsc.org/en/content/articlelanding/2018/ta/c8ta03062f

... 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- ...

http://www.google.com.au/patents/US5661219

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, ...

http://www.freepatentsonline.com/6326417.html

A star-shape polymer of 3-armed poly(ethylene glycol) methyl ether methacrylate-co-glycidyl methacrylate copolymer (3PPEGM-co- ... were fabricated by simultaneous reaction of 3PPEGM-co-GMA and bisphenol A diglycidyl ether (BPDE) with polyetherdiamine (ED2003 ...

https://www.osti.gov/pages/biblio/1460760-exploring-interfacial-stability-solid-state-electrolytes-lithium-metal-anode-surface

"Proinflammatory activation of macrophages by bisphenol A-glycidyl-methacrylate involved NFκB activation via PI3K/Akt pathway," ...

https://www.hindawi.com/journals/bmri/2014/319651/

... 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). ...

https://clinicaltrials.gov/ct2/show/NCT00339339

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)

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)
No. 436909 ), ethoxylated bisphenol A dimethacrylate (BisEMA, Prod. (sigmaaldrich.com)
Bisphenol A-glycidyl methacrylate (BisGMA) and urethane dimethacrylate were found in TEC and FBF eluates, while SDR released BisGMA and triethylene glycol dimethacrylate. (uio.no)
bisphenol A-glycidyl methacrylate (Bis-GMA), triethylene glycol dimethacrylate (TEGDMA), urethane dimethacrylate (UDMA, hydroxyethyl methacrylate (HEMA) or decanediol dimethacrylate (D3MA) [ 1 - 5 ]. (alliedacademies.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)

2. Holographic media according to claim 1, characterized in that the olefϊnically unsaturated aromatic urethanes are urethane acrylates and/or urethane methacrylates. (sumobrain.com)

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)

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)
Monoperoxy derivative of diglycidyl ether Bisphenol A (PO) was used as an initiator. (mostwiedzy.pl)

The reaction product of bisphenol A and glycidyl methacrylate that undergoes polymerization when exposed to ultraviolet light or mixed with a catalyst. (bioportfolio.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)
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)
Nanogels are novel new macromolecules that can improve the properties of methacrylate polymer systems by reducing polymerization shrinkage and stress. (auraria.edu)

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)
Said methacrylate and styrene monomers each have a bulky pendant moiety. (coatingsworld.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)

Interaction between bisphenol A and glycidyl methacrylate is making fissure sealant. (online-vitamins-guide.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)

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)
Said polyacetoacetate being polymerized from a monomer mixture comprising a methacrylate monomer, a styrene monomer, or a combination thereof. (coatingsworld.com)
Using light fraction of coal tar (5.75 wt % of coumarone and 44.45 wt % of indene), glycidyl methacrylate and styrene, the coumarone-indene resin with epoxy groups (CIRE) has been synthesized. (mostwiedzy.pl)
The possible formation of CIRE has been studied on the model systems consisting of PO, glycidyl methacrylate, indene or coumarone, or styrene, or mixture. (mostwiedzy.pl)

The composition also comprises a methacrylate monomer, and optionally, a filler and a coupling agent. (patents.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)

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)

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)

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)

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)

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)

For bisphenol A the maximum acceptable dose is 0.05 milligrams per kilogram of body weight per day (US EPA, 1993). (clinicaltrials.gov)

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)

A polycarbonate (PC) and poly(lactic acid) (PLA) blend comprising (a) Bisphenol A PC, (b) PLA, (c) a chain extender, and (d) a glycidyl methacrylate (GMA). (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)

3. The process as claimed in claim 1, wherein component (B) is employed in an excess such that the ratio of the NH bonds in component (B) to the glycidyl groups in component (A) is 8:1, preferably 12:1 to 36:1. (patentgenius.com)

Anatomy5

Organisms6

Diseases2

Chemicals and Drugs78

Analytical, Diagnostic and Therapeutic Techniques and Equipment35

Phenomena and Processes22

Disciplines and Occupations2

Technology, Industry, Agriculture41

Named Groups1

Health Care6

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

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

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

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

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

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

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

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

Methacrylates

Methylmethacrylates

Epoxy Compounds

Polymethyl Methacrylate

Phenols

Methylmethacrylate

Polyhydroxyethyl Methacrylate

Estrogens, Non-Steroidal

Endocrine Disruptors

Bisphenol A-Glycidyl Methacrylate

Polymethacrylic Acids

Acrylates

Acrylic Resins

Materials Testing

Dental Materials

Polymerization

Denture Bases

Benzoyl Peroxide

Polymers

Environmental Pollutants

Resins, Synthetic

Wettability

Surface Properties

Nylons

Phthalic Acids

Adhesives

Composite Resins

Prenatal Exposure Delayed Effects

Biocompatible Materials

Siloxanes

Silanes

Dental Cements

Pliability

Mechanical Phenomena

Maternal Exposure

Polycarboxylate Cement

Polyurethanes

Tissue Embedding

Air Pollutants, Occupational

Hydrogels

Plastic Embedding

Glucuronides

Dentin-Bonding Agents

Dental Stress Analysis

Dental Technicians

Dental Bonding

Hardness

Environmental Exposure

Photoinitiators, Dental

Parabens

Microchip Analytical Procedures

Pregnancy

Diethylstilbestrol

Dentin

Resin Cements

Molecular Structure

Dose-Response Relationship, Drug

Dental Cavity Lining

Water

Thermogravimetry

Cycloparaffins

Compressive Strength

Denture Liners

Photoelectron Spectroscopy

Dental Restoration Wear

Chromatography, High Pressure Liquid

Polyvinyls

Food Packaging

Tensile Strength

Elastic Modulus

Hydrogel

Epoxy Resins

Polystyrenes

Microscopy, Electron, Scanning

Polyethylene Glycols

Ethinyl Estradiol

Estrogens

Acrylamides

Environmental Monitoring

Water Pollutants, Chemical