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.

基于美化的树脂复合材料在临床实践中被广泛使用，因为具有审美的优势，易用性，与牙齿结构的良好结合以及改善的机械性能。然而，轻固化的树脂复合材料的聚合反应比自我固化的复合材料的速度快，这比自我固化的树脂复合材料在树脂壁/地板之间产生更多的差距。柔性粘合剂（如超稳态dliner）的组合（例如，超支dliner）和缓慢启动的固化方法似乎可以有效地增强型号的镜面密封件，甚至可以增强型号的镜面密封壁。与未填充的粘合剂相比，与填充的粘合剂相关的可流动复合恢复显着增加了边缘密封和壁的适应性。 C因子增加对未填充胶粘剂系统（如单粘合剂）的粘合界面有影响。与Clearfil SE键系统相比，增加的C因子对未填充的粘合剂系统（例如单键）的键合界面有助于负面影响。评估键强度与空腔壁适应之间的相关性。粘结强度与腔壁适应之间的相关性较差。与在热应力条件下，相比，自我蚀刻，填充的粘合剂系统的透明粘合键在获得更可靠的密封和使树脂复合物对腔壁的密封和适应性对腔壁的适应性的优势可能具有一些优势。