论文部分内容阅读
复合树脂作为广泛应用于口腔牙体修复领域的一类材料,其优点是美观、临床操作简便、能与牙本质和牙釉质牢固结合、具有较广的色泽选择范围。但在临床应用过程中,复合树脂会产生聚合收缩,其主要是由于树脂内的基质所造成。聚合前的树脂基质单体均为小分子化合物,在聚合反应过程中分子间距离由0.3~0.5nm转化成长度为
As a kind of material which is widely used in the field of dental restorations, composite resin has the advantages of beautiful appearance, simple clinical operation, firm combination with dentin and enamel, and wide range of color choices. However, in the clinical application process, the composite resin will have a polymerization shrinkage, which is mainly caused by the matrix in the resin. The resin matrix monomers before polymerization are all small molecule compounds. During the polymerization, the distance between the molecules is changed from 0.3 to 0.5 nm to a length of