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Restorative method for reducing polymerization contraction stress of resin composite restorations

降低树脂复合修复体聚合收缩应力的修复方法

基本信息

批准号：
16591907
负责人：
YOSHIKAWA Takako
金额：
$ 1.66万
依托单位：
Tokyo Medical and Dental University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

项目摘要

Light-cured resin-based composites are widely used in clinical practice because of the esthetic advantages, ease of use, excellent bonding to tooth structure, and improved mechanical properties. However, the polymerization reaction of light-cured resin composites is faster than that of self-cured composites, which creates more gaps between the resin and cavity wall/floor than self-cured resin composites.The combination of a flexible adhesive such as Super-Bond D-Liner and the slow-start curing method would seem to be effective in enhancing marginal sealing and cavity wall adaptation even at short irradiation times. A flowable composite restoration in association with filled adhesive significantly increased marginal sealing and wall adaptation compared with unfilled adhesive. Increased C-factor contributes to negative effects on the bonded interface of an unfilled adhesive system such as Single adhesive. Increased C-factor contributes to negative effects on the bonded interface of an unfilled adhesive system such as Single Bond compared with a filled system such as Clearfil SE Bond system. To evaluate the correlation between bond strength and cavity wall adaptation. There was a poor correlation between bond strength and cavity wall adaptation. It would seem that the self-etch, filled adhesive system Clearfil SE Bond may afford some advantages with respect to attaining more reliable sealing and adaptation of resin composite to the cavity wall compared with total-etch, unfilled adhesive system Single bond regardless of composite type under thermal stress conditions.

光固化树脂基复合材料因其美观、使用方便、与牙体结构良好的粘接以及力学性能的改善而广泛应用于临床。然而，光固化树脂复合材料的聚合反应比自固化树脂复合材料的聚合反应更快，从而在树脂和空腔壁/地板之间产生比自固化树脂复合材料更大的间隙。柔性粘合剂（如Super-Bond D-Liner）和缓慢启动固化方法的组合似乎在增强边缘密封和空腔壁适应方面是有效的，即使在短照射时间内也是如此。与未填充粘合剂相比，与填充粘合剂相关的可流动复合材料修复体显著增加了边缘密封和壁适应性。增加的C因子会对未填充的粘合剂系统（如单一粘合剂）的粘合界面产生负面影响。与填充系统（如Clearfil SE Bond系统）相比，增加的C因子会对未填充粘合剂系统（如Single Bond）的粘合界面产生负面影响。评价粘结强度与洞壁适应性之间的相关性。粘结强度和腔壁适应性之间的相关性较差。与全蚀刻、未填充粘合剂系统相比，自蚀刻、填充粘合剂系统Clearfil SE Bond在实现树脂复合材料与腔壁的更可靠密封和适应性方面似乎具有一些优势。