本标准对牙科用石膏制品进行了分类，并规定了要求 用于制作口腔印模、模具、铸件、模具或模型底座，以及安装模型。信息技术 规定了用于确定是否符合这些要求的试验方法。它也 包括包装标签要求，以及随附的充分说明 包裹本标准不适用于由半水硫酸钙组成的牙科骨移植替代品 （或石膏）。本修订标准采用了ISO 6873:2013《牙科石膏制品》。ADA SCDP 投资问题工作组2.18对国际标准进行了审查，认为该标准适用于 采用经修订的ANSI/ADA第25号标准。本标准取消并取代ANSI/ADA标准 编号25:2000（R2010）。

This standard gives a classification of, and specifies requirements for, gypsum products used for dental purposes such as making oral impressions, molds, casts, dies or model bases, and mounting models. It specifies the test methods to be employed to determine compliance with these requirements. It also includes requirements for the labelling of packaging and for adequate instructions to accompany each package.This standard does not apply to dental bone graft substitutes composed of calcium sulfate hemihydrate (or gypsum).This revised standard is an identical adoption of ISO 6873:2013, Dentistry-Gypsum products. ADA SCDP Working Group 2.18 on Investments reviewed the international standard and found it acceptable for adoption as revised ANSI/ADA Standard No. 25. This standard cancels and replaces ANSI/ADA Standard No. 25:2000 (R2010).