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印模材料用来制取牙体缺损或牙齿缺失的阴性印模。1756年Pfaff首先介绍蜡取模法,非弹性体开始用于取模。1925年用琼酯弹性体印模材料取模,以后经过不断的改进,弹性体印模材料具有操作方便,能正确的复制出口腔中每个部位的软硬组织形态,包括倒凹区。从50年代末期由水胶体印模材料发展为合成橡胶印模材料,它具有更大的优越性,材料的性能,抗撕裂强度都比较好,变形亦小,在一只印模中可以复制数只石膏模型。从而促进制作修复体工作的进展。现将各种印模材料介绍于后。
Impression material is used to make a negative impression of tooth defects or missing teeth. In 1756 Pfaff introduced the wax-molding method first, and the non-elastomer began to be used for taking molds. In 1925, the agate elastomer impression material was taken from the mold, and after continuous improvement, the elastomeric impression material was easy to operate and could correctly copy the soft and hard tissue morphology of each part in the oral cavity, including the undercut area. From the late 50's from hydrocolloid impression material development for the synthetic rubber impression material, it has greater advantages, the material properties, tear strength is better, the deformation is small, in a copy of the impression can be copied Several plaster models. Thus contributing to the progress of making restoration work. Now a variety of impression materials introduced later.