Development of aesthetic light-activated restorative composite resin with self-esthetic matching system

本研究的目的是研制具有自我美容匹配系统的美容修复复合树脂。综合考虑树脂的光学性能和色泽特性，筛选出对实验用复合树脂有较好效果的树脂单体、白炭黑填料和光引发剂。测量了薄膜的折射率、透光率和反射率特性，以及CIEL*a*b*颜色值。实验用复合树脂的光学性能和颜色特性与天然牙釉质和牙本质的光学性能和颜色特性基本一致。然而，在4℃~60℃的不同温度下，树脂的光学性能和颜色存在显著差异，从这些结果来看，试验的复合树脂具有较高的美学特性。然而，树脂表现出热致变色，这是热变化的光学和颜色特性。这会影响天然牙与修复体复合树脂的美观匹配。

The aim of this study was to develop the esthetic restorative composite resin with self-esthetic matching system. Considering the optical properties and color characteristics, some resin monomers, silica filler and photoinitiators, which have desirable benefits for trial composite resin, were selected. Measurements of the refractive index, light transmittance and reflectance characteristics, and CIEL*a*b* color values were carried out. The optical properties and color characteristics for the trial composite resin agreed with those for enamel and dentin of natural tooth. However, there were significant differences in optical properties and color of the resin at different temperatures from 4C to 60C.From these results, the trial composite resin had high esthetic characteristics. However, the resin showed thermochromism, which was the thermal changes in optical and color characteristics. This would affect the esthetic matching between natural tooth and restorative composite resin.