Developing a more complete understanding of stresses produced in dental composites during polymerization

被引:298
作者
Ferracane, JL [1 ]
机构
[1] Oregon Hlth & Sci Univ, Dept Restorat Dent, Div Biomat & Biomech, Portland, OR 97239 USA
关键词
dental composite; contraction stress; residual stress;
D O I
10.1016/j.dental.2004.10.004
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
The polymerization of dental composites is accompanied by significant shrinkage and the production of internal stress. This stress has been implicated as a causative factor for marginal discrepancies seen in composite restorations. This paper provides an overview of the origins of these stresses in polymerizing dental composites, a brief description of the methods for measuring them, a discussion of what little is known of the relationship between contraction stress and outcomes, an identification of the materials and placement factors that affect contraction stress, and a description of several strategies proposed to reduce the stresses. The phenomenon of contraction stress development in dental composite restoratives is highly complex, and despite many investigations, remains as a significant clinical concern. (C) 2004 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:36 / 42
页数:7
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