Results 131 to 140 of about 810 (178)
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Sequencing from Compomers: The Puzzle
Theory of Computing Systems, 2005The board game FragmindTM poses the following problem: The player has to reconstruct an (unknown) string s over the alphabet $\Sigma$. To this end, the game reports the following information to the player, for every character $x \in \Sigma$: First, the string s is cleaved wherever the character x is found in s.
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Compomers: between glass-ionomer cements and composites
Biomaterials, 1998The term 'compomer' was crafted by the producers of the first commercial material of this kind: a polyacid-modified composite resin, sold as a filling material for some specific applications. This term should recall the composite resins and glass-ionomer cements, since some features of these two generic materials are found in the compomers.
Meyer JM, Cattani-Lorente MA, Dupuis V
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The effect of 30% hydrogen peroxide on the color of compomers
Journal of Biomedical Materials Research Part B: Applied Biomaterials, 2003AbstractThe interaction between bleaching agents and recently introduced compomers has several issues that need to be explored, including morphology and mechanical properties. To investigate the effect of 30% hydrogen peroxide, a bleaching agent, on the color of compomers, three compomers (Compoglass F, Elan, and F2000) were polymerized, bleached up to
Y H, Kwon, T Y, Kwon, H I, Kim, K H, Kim
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Dentin shear bond strength of compomers and composites
Dental Materials, 2000The aim of this study was to compare the shear bond strengths and fracture characteristics of two compomers bonded with a single step bonding agent with two modern composites, a microfil and hybrid, bonded with a fourth generation bonding agent.Freshly extracted human third molars were sectioned parallel to the occlusal surface to expose midcoronal ...
B T, Schneider +3 more
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In vitro cytotoxicity of a composite resin and compomer
International Endodontic Journal, 2002AbstractAim This work was designed to investigate the potential cytotoxicity of two of the newer dental restorative materials, Spectrum® composite resin and Dyract® AP compomer.Methodology Cultured human endothelial cells (ECV‐304) were exposed to each of the restorative materials through a 70‐µm dentine barrier to simulate the in vivo clinical ...
C A, Quinlan +3 more
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Compomers in restorative therapy of children: a literature review
International Journal of Paediatric Dentistry, 2006Objective. The restoration of carious primary teeth plays an underestimated role in paediatric dentistry. This is astonishing for many reasons, not least because many new materials have been introduced in recent years. New or modified techniques and materials, with better aesthetics and flexural properties, allow minimally invasive treatment.
Norbert, Krämer, Roland, Frankenberger
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Discoloration of a compomer by stains.
The Journal of the Greater Houston Dental Society, 1998This study evaluated the color stability of a polyacid-modified composite (compomer) upon exposure to stains. Five disks were prepared for immersion in each of five stains: coffee, chlorhexidine, cola, red wine, and water as a control. Color measurements were made on a reflection spectrophotometer at baseline, after 24-hour incubation, and after 24, 48,
R M, Fay, C S, Walker, J M, Powers
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RESIN-BASED COMPOSITES AND COMPOMERS IN PRIMARY MOLARS
Dental Clinics of North America, 2000Resin-based composite resins and polyacid-modified resin-based composites (compomers) have become popular for the restoration of primary anterior and posterior teeth. In some European countries, resin-based composites or glass-ionomers are the materials of choice for primary teeth because of the controversy over dental amalgam and its alleged adverse ...
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Adhesion of a compomer to dental structures.
Quintessence international (Berlin, Germany : 1985), 1998The objective of this study was to evaluate the bond strength of a compomer to dental enamel, dentin, and cementum. Flat surfaces of these tissues were obtained from recently extracted human teeth. The different substrates were either treated with PSA (a primer and adhesive) or acid etched (35% phosphoric acid gel) and treated with PSA.
P F, Abate +3 more
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American journal of dentistry, 2003
To compare the clinical performance of Dyract, Spectrum-TPH and Dyract layered with Spectrum-TPH (sandwich) in Class II restorations of permanent dentitions.23 adult patients aged 25-62 were selected at random in a general dental practice. Each patient had 3 bicuspid teeth restored with Dyract, Spectrum-TPH and a "sandwiched" combination where Dyract ...
Martin, Wucher +2 more
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To compare the clinical performance of Dyract, Spectrum-TPH and Dyract layered with Spectrum-TPH (sandwich) in Class II restorations of permanent dentitions.23 adult patients aged 25-62 were selected at random in a general dental practice. Each patient had 3 bicuspid teeth restored with Dyract, Spectrum-TPH and a "sandwiched" combination where Dyract ...
Martin, Wucher +2 more
openaire +1 more source