Results 271 to 280 of about 45,122 (295)
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The evaluation of resin composite consistency
Dental Materials, 1998To evaluate a method for the assessment of the consistency of unset resin composite.Fourteen commercial resin composites were selected, which had a range of consistencies as assessed subjectively. The material was placed in a cylindrical mold with 8 mm diameter and 8 mm depth, and a glass rod with 4.37 mm diameter driven into the composite at 24.4 mm ...
Amin S. Rizkalla +2 more
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The composite resin post and core
The Journal of Prosthetic Dentistry, 1972Abstract It is not the purpose of this article to advocate that the composite resin post and core is superior to the cast dowel and coping or pin-retained amalgam. However, it is a technique which is both economical and time saving. Clinical experience and judgment must provide the final standard for its application.
Jerry R. Landwerlen, Homer H. Berry
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Wear Rates of Resin Composites
Operative Dentistry, 2013SUMMARY A laboratory study was conducted to examine the wear of resin composite materials using a generalized wear simulation model. Ten specimens each of five resin composites (Esthet•X [EX], Filtek Supreme Plus [SP], Filtek Z250 [Z2], Tetric EvoCeram [EC], and Z100 Restorative [Z1]) were subjected to wear challenges of 100,000, 400,000,
Robert L. Erickson +3 more
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Porosity in posterior composite resins
European Journal of Oral Sciences, 1986Abstract – The percent pore area and the mean pore size were measured in specimens made of nine brands of composite resin restorative materials. The overall percent porosity ranged from 0.01 to 4.5%. The specimens for the study were prepared in two ways; by condensation or by pressure.
Roy I. Holland +2 more
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Fluorescence of Layered Resin Composites
Journal of Esthetic and Restorative Dentistry, 2005Fluorescence is the absorption of light by a substance and the spontaneous emission of light in a longer wavelength within 10(-8) seconds of activation.The purpose of this study was to determine the differences in fluorescence among layered resin composites with a color-measuring spectrophotometer.Spectral reflectance and color of five brands of resin ...
Yong-Keun Lee, Huan Lu, John M. Powers
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2012
Abstract This article discusses the composition of the major components of dental composite resins: organic resin matrix, filler, coupling agents, and initiator-accelerator systems. It describes the properties of composite resins that are related to the amount and type of filler and resin-matrix compositions.
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Abstract This article discusses the composition of the major components of dental composite resins: organic resin matrix, filler, coupling agents, and initiator-accelerator systems. It describes the properties of composite resins that are related to the amount and type of filler and resin-matrix compositions.
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The Journal of Prosthetic Dentistry, 1989
Posterior composite resin restorations have several physical limitations. Polymerization shrinkage during curing and resistance to wear are two factors that can be alleviated by a composite resin inlay. Curing the restoration extraorally in a heat-and-light curing unit and cementing the restoration with a composite resin cement reduces the deleterious ...
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Posterior composite resin restorations have several physical limitations. Polymerization shrinkage during curing and resistance to wear are two factors that can be alleviated by a composite resin inlay. Curing the restoration extraorally in a heat-and-light curing unit and cementing the restoration with a composite resin cement reduces the deleterious ...
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2008
Today, resin-based composites represent one of the most important and most widely used groups of materials in dental practice. Consequently, a large number of products are available on the market. In this chapter, information on the composition, setting reaction and release of substances is provided as the basis for a detailed review of the local and ...
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Today, resin-based composites represent one of the most important and most widely used groups of materials in dental practice. Consequently, a large number of products are available on the market. In this chapter, information on the composition, setting reaction and release of substances is provided as the basis for a detailed review of the local and ...
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Photopolymerization of composite resins
2002Halogen lamps represents the most often used light source for composite photopolymerization. Many attempts have been made with continuous Ar-laser, XeCl pulsed laser and plasma light. All of them had some disadvantages which limited their use. At present highly avaiable light emitting blue diodes enables satisfying degree of conversion and lower ...
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