本文的目的是简单地介绍和讨论复合树脂(简称CR)材科的特点和性能。材料分类的方法CR 是由硬的无机颗粒和软得多的树脂基质结合而成的。两种成分的作用是:无机填料赋予理想的物理性能,如刚性、表面硬度、低的收缩率和低的热膨胀系数;树脂使之具有必须的可塑性和固化特性,使材料能 The purpose of this paper is to briefly introduce and discuss the characteristics and properties of composite resins (referred to as CR). Methodology for Material Classification CR is a combination of hard inorganic particles and a much softer resin matrix. The two components act as: Inorganic fillers give the desired physical properties such as rigidity, surface hardness, low shrinkage and low coefficient of thermal expansion; the resin gives it the necessary plasticity and cure characteristics so that the material can