Results 121 to 130 of about 4,825 (154)

Water sorption in a bis(GMA)/TEGDMA resin

Journal of Biomedical Materials Research, 1984
AbstractSome water sorption–desorption properties of a heat‐cured copolymer of bisphenol‐A‐glycidyl methacrylate/triethylene‐glycol‐dimethacrylate [bis(GMA)/TEGDMA] were investigated during three sequential water sorption–desorption cycles at 60, 37, and 60°C.
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An Investigation into the Fracture Behavior of a Particulate-filled bis-GMA Resin

Journal of Dental Research, 1987
Dental composites are being increasingly used to restore occlusal surfaces of posterior teeth. If these restorations are not to fracture in service, an understanding of their fracture behavior is essential. The fracture parameter used is the stress-intensity factor at crack instability (K IC )
D M, Davis, N E, Waters
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Studies on Hemolytic Activity of Bisphenol A Diglycidyl Methacrylate (BIS-GMA)

Journal of Dental Research, 1978
To 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.
S. Fujisawa, Y. Imai, null Fujisawa, K. Kojima, null Fujisawa, E. Masuhara   +5 more
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Evaluation of UDMA's potential as a substitute for Bis-GMA in orthodontic adhesives

Dental Materials, 2013
To investigate the effect of UDMA %, of a range of filled UDMA:TEGDMA resins, on viscosity, degree of conversion and shear bond strength. Furthermore, to compare between model filled and unfilled UDMA adhesives, and clinically used orthodontic adhesives on these properties.Four filled and four unfilled resins with a UDMA to TEGDMA weight ratio 50:50 ...
Alexia E. Papakonstantinou, Theodore Eliades, CELLESI, FRANCESCO, David C. Watts, Nick Silikas   +4 more
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Water sorption of polymethacrylate networks: Bis‐GMA/TEGDM copolymers

Journal of Biomedical Materials Research, 1987
AbstractPolymethacrylate networks were made by copolymerization of a range of compositions of bis‐GMA and triethylene glycoldimethacrylate (TEGDM). Polymerization was initiated both by heating with benzoyl peroxide or by photopolymerization (λ > 400 nm) using camphoroquinone as sensitizer. The uptake of water increased from 3 to 6% as the proportion
S, Kalachandra, D T, Turner
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An evaluation of BIS‐GMA resin pit and fissure coatings

Australian Dental Journal, 1979
Abstract— 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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Network structure of Bis-GMA- and UDMA-based resin systems

Dental Materials, 2006
The 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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Properties of Sealants Containing Bis-GMA and Various Diluents

Journal of Dental Research, 1978
Properties 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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The effects of BIS-GMA and TEG-DMA on female mouse fertility

Dental Materials, 2006
The 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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Multifractality in the copolymerization of Bis‐GMA/TEGDMA by pulsed photoacoustics

Journal of Applied Polymer Science, 2008
AbstractFractal development during polymerization of a dimethacrylate system (Bis‐GMA/TEGDMA) has been studied through the analysis of time series obtained sequentially by pulsed photoacoustics. The photoacoustic signals as obtained in situ during photopolymerization of Bis‐GMA/TEDGMA were analyzed by rescaled range analysis, dispersion analysis, and ...
M. Navarrete, J. Pineda, R. Vera‐Graziano   +2 more
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