How cavity dimension influences in the composite deformation during polymerization shrinkage
نویسندگان
چکیده
منابع مشابه
Volumetric Polymerization Shrinkage of Contemporary Composite Resins
The polymerization shrinkage of composite resins may affect negatively the clinical outcome of the restoration. Extensive research has been carried out to develop new formulations of composite resins in order to provide good handling characteristics and some dimensional stability during polymerization. The purpose of this study was to analyze, in vitro, the magnitude of the volumetric polymeriz...
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Aesthetic materials have always been a priority for the restoration of anterior teeth; increasingly, they have also gained prominence in the restoration of posterior teeth. This has been due to their advantages as an alternative to amalgam. Their drawbacks however, can include poor marginal adaptation, postoperative sensitivity and cuspal movement. These are particularly associated with the pol...
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Despite daily perfecting both the composite material and light sources, the polymerization shrinkage of composite materials still remains a significant problem that compromises longevity of composite fillings. On average, the composite materials shrink 1-5% volume (1). Total shrinkage can be divided into preand postgelation phase. During the pregelation phase, the composite material is not comp...
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Background and Aim: Minimizing the polymerization shrinkage of composite resins is a critical goals in composite restorations. Many factors affect polymerization shrinkage. This study aimed to evaluate the effect of composite resin shade on polymerization shrinkage. Materials and Methods: In this in vitro study, 14 composite discs measuring 1.5×8 mm were fabricated. The samples were prepared u...
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The purpose of this study was to quantify the cuspal deflection produced by polymerization shrinkage, comparing 3 different techniques in the placement and polymerization of Class II posterior composite resin restorations in vivo. Thirty primary second molars in need of a Class II restoration were identified. An index, with a size 1⁄4 carbide round bur, was placed on the buccal and lingual cusp...
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ژورنال
عنوان ژورنال: Journal of Research in Dentistry
سال: 2013
ISSN: 2317-5907,2317-5907
DOI: 10.19177/jrd.v1e22013127-133