Results 271 to 280 of about 11,605 (301)
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Network structure of Bis-GMA- and UDMA-based resin systems
Dental Materials, 2006The commonly used dental base monomers 2,2-bis[p-(2'-hydroxy-3'-methacryloxypropoxy)phenylene]propane (Bis-GMA) and 1,6-bis(methacryloxy-2-ethoxycarbonylamino)-2,4,4-trimethylhexane (UDMA) require the use of a diluent monomer, such as triethylene glycol dimethacrylate (TEGDMA).
Cynthia J E, Floyd, Sabine H, Dickens
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Marginal Adaptation of BIS-GMA-based Composites Containing Various Diluents
Journal of Dental Research, 1981Marginal leakage is a result of inadequate marginal seal. Curing shrinkage of the resin is a major contributor to breaking the margin seal. The chemical structure and concentration of the diluent in the resin formulation affects curing shrinkage and marginal adaptation of composite restorations.
G M, Brauer +4 more
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Properties of Sealants Containing Bis-GMA and Various Diluents
Journal of Dental Research, 1978Properties of commercial and a series of experimental pit and fissure sealants, based on Bis-GMA were determined using rapid test procedures. By proper selection of monomeric diluent and addition of a photocrosslinking agent, the characteristics of sealant formulations can be varied widely.
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Mechanical properties of BIS‐GMA resin short glass fiber composites
Journal of Biomedical Materials Research, 1989AbstractThe use of short glass fibers as a filler for dental restorations or cement resins have not been examined extensively. The mechanical properties and untreated glass fibers (5 μm dia × 25 μm) in Bis‐phenol A glycidyl methacrylate (BIS‐GMA) diluted with triethylene‐glycol dimethacrylate (TEGDMA) resin were investigated for possible use as a ...
W R, Krause, S H, Park, R A, Straup
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Rheological properties of fumed silica filled Bis‐GMA dispersions
Polymer Engineering & Science, 1998AbstractThe rheological properties of Bis‐GMA dispersions filled with fumed silica were investigated to optimize the manufacturing process and mechanical properties by using a Rheometrics Mechanical Spectrometer (RMS). Steady and dynamic measurements on the RMS were carried out to obtain shear viscosity and dynamic mechanical properties.
Sangwoo Kim, Jyongsik Jang, Ohyoung Kim
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Mechanical properties of hydroxyapatite whisker-reinforced bis-GMA-based resin composites
Dental Materials, 2012To evaluate the reinforcement efficacy of hydroxyapatite (HA) whiskers in bis-GMA-based dental restorative composites and determine the effect of volume fraction on the mechanical properties.Silanized HA whiskers and nano-scale powder were mixed in various proportions with bis-phenol A-glycidyl methacrylate (bis-GMA)-based polymer pastes.
Hongquan, Zhang, Brian W, Darvell
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Radiopacity evaluation of Bis‐GMA/TEGDMA/opaque mineral filler dental composites
Journal of Applied Polymer Science, 2007AbstractThe purpose of this work was to determine radiopacity values of composites based on (Bis‐GMA/TEGDMA) monomers, at varying monomer compositions: (25/75), (50/50), and (75/25), mixed with five different radiopacifying filler agents: BaO, BaSO4, La2O3, ZrO2, and SrO at varying loadings ranging from 0 to 80 wt %.
Amirouche, A., Mouzali, M., Watts, D. C.
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An evaluation of BIS‐GMA resin pit and fissure coatings
Australian Dental Journal, 1979Abstract— A review of studies on the microleakage, retention, durability, and cariostatic efficacy of BIS‐GMA resin fissure sealants suggests that newly‐erupted permanent molars benefit least but the benefit for premolars is consistently high. Problems arising in the assessment of the sealants in clinical trials are discussed.
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Studies on Hemolytic Activity of Bisphenol A Diglycidyl Methacrylate (BIS-GMA)
Journal of Dental Research, 1978To clarify the high hemolytic activity of BIS-GMA, the molar concentration producing 50% hemolysis (H 50) and the partition coefficient in-octanol-water were determined using BIS-GMA and various types of methacrylates. It is suggested that the strong hemolytic potency of BIS-GMA is due to the high hydrophobic nature of the compound.
S. Fujisawa +5 more
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The effects of BIS-GMA and TEG-DMA on female mouse fertility
Dental Materials, 2006The current study evaluated the effect of bisphenol A glycerolate dimethacrylate (BIS-GMA) and triethyleneglycol dimethacrylate (TEG-DMA) on female mouse fertility.Adult female mice were exposed to BIS-GMA or TEG-DMA (0, 25 and 100 microg/kg) intragastrically daily for 28 d and then mated with sexually mature untreated male mice and after mating their ...
Homa, Darmani, Ahmad S, Al-Hiyasat
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