Class II direct composite resin restorations with beta-quartz glass-ceramic inserts.
ABSTRACT With the increasing demand for esthetic posterior restorations, numerous techniques have been developed. The direct resin restoration has probably been used most extensively in Class II situations. Problems with Class II direct resin restorations include difficulty in developing proximal contact, occlusal wear, and polymerization shrinkage. Beta-quartz glass-ceramic inserts have been developed in an attempt to reduce the incidence of these potential problems. They can be placed in a one-appointment technique, are relatively inexpensive, and can readily be utilized by the clinician adept in placing Class II composite resin restorations.
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ABSTRACT: Objectives. Electronic databases are not sufficiently up to date to provide comprehensive notation of the most recent literature for reference in developing scientificpapers. The objective of this summary was to identify and categonize the 1993 dental materials scientific literature that dealt with restorative dentistry. Methods. 17 primary journals were manually searched via the tables of contents, and 101 secondary journals were manually or electronically searched. Dental materials citations were categorized into 15 major sections and several subsections, excluding case reports and all the literature primarily related to dental implants or biomedical materials outside of dentistry. Results. This study identified 786 citations, the largest number being associated with glass ionomers and composites. Significance. This citation list provides a comprehensive source for review by academicians and researchers that bridges the gap between initial publication and electronic citation.Dental Materials 02/1994; DOI:10.1016/0109-5641(94)90023-X · 4.16 Impact Factor
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ABSTRACT: Stress generation at tissue/resin composite interfaces is one of the important reasons for failure of resin-based composite (RBC) restorations owing to the inherent property of polymerization shrinkage. Unrelieved stresses can weaken the bond between the tooth structure and the restoration, eventually producing a gap at the restoration margins. This can lead to postoperative sensitivity, secondary caries, fracture of the restorations, marginal deterioration and discoloration. As polymerization shrinkage cannot be eliminated completely, various techniques and protocols have been suggested in the manipulation of, and restorative procedures for, RBCs to minimize the shrinkage and associated stresses. Introduction of various newer monomer systems (siloranes) may also overcome this problem of shrinkage stress. This review emphasizes the various material science advances and techniques advocated that are currently available or under trial/testing phase to deal with polymerization shrinkage in a clinical environment. Clinical Relevance: Minimizing the shrinkage stresses in RBC restorations may lead to improvement in the success rate and survival of restorations. Thus, it is important for dental practitioners to be aware of various techniques and materials available to reduce these shrinkage stresses and be updated with the current knowledge available to deal with this issue.Dental update 03/2010; 37(2):115-8, 120-2, 124-5.