印模法是用塑性材料将被测表面复制下来，再对印模进行测量的间接方法。常用的印模材料有川蜡、石蜡、赛璐珞和低熔点合金等。由于印模材料不可能完全填满被测表面的谷底，取下印模时又会使波峰被削平,因此印模的高度参数值通常比被测表面的高度参数实际值小，应根据实验结果进行修正。印模法适用于内表面粗糙度的测量。
通过实例，简要介绍了印模法在间接测量形位公差及表面形态方面的应用。
The application of copying method in indirect measurement of positional tolerance and surface profile is introduced and several examples are given as well.
目的：观察琼脂类和藻酸盐类印模材联合印模法在桩核烤瓷冠中的应用效果。
Objective: To observe the clinical result of the method of combined impression used in post and core PFM crowns.
方法：对100例无牙牙合患者采用二次印模法，取功能性印模，常规制作钛腭托全口义齿，并进行1 ~ 3年的临床疗效观察。
Methods: 100 edentulous patients, who wore titanium palatal plate denture with two-step impression, were observed the clinical effect for 1 to 3 years.
应用推荐