Shrinkage forces due to polymerization of light-cured dental composite resin in cavities
نویسندگان
چکیده
منابع مشابه
Finite Element Analysis of Shrinkage Deformation of Light-Cured Composite Resin for Dental Restoration
In this study, the stress distribution in the shrinkage process when a light-cured composite resin is irradiated with light was estimated. We assumed that shrinkage and hardening of the light-cured composite resin resulted from light irradiation and was the same as that caused thermally. On the basis of this assumption, we simulated the deformation during the shrinkage of the composite resin us...
متن کاملPolymerization shrinkage of dental composite resins.
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...
متن کاملEffect of Shade on Immediate and Post-Curing Polymerization Shrinkage of Composite Resin
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...
متن کاملThe effects of temperature and light intensity on the polymerization shrinkage of light-cured composite filling materials.
UNLABELLED The aim of this study was to investigate the effect of light intensity on polymerization shrinkage of resin composites. The five materials tested were Lite-Fil (A) (LFA), Lite-Fil (P) (LFP), Z100, Palfique, (PAL) and Tetric (TRC). Two types of measurements were made to determine the effects of environmental temperature and light intensity. Results were analyzed by two-way analysis of...
متن کاملThe influence of "C-factor" and light activation technique on polymerization contraction forces of resin composite
OBJECTIVES This study evaluated the influence of the cavity configuration factor ("C-Factor") and light activation technique on polymerization contraction forces of a Bis-GMA-based composite resin (Charisma, Heraeus Kulzer). MATERIAL AND METHODS Three different pairs of steel moving bases were connected to a universal testing machine (emic DL 500): groups A and B - 2x2 mm (CF=0.33), groups C ...
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ژورنال
عنوان ژورنال: Polymer Testing
سال: 2010
ISSN: 0142-9418
DOI: 10.1016/j.polymertesting.2010.09.008