YY 0271.2-2009 in English

YY0271的本部分规定了牙科水基水门汀的要求。这些水门汀临床用于垫底、衬层和修复,其剂型有手工调和型、机械调拌胶囊型以及单组分型。水门汀为水基材料,通过多重反应包括酸碱反应和聚合反应达到固化。

Scope

This part of YY 0271 specifies the requirements for dental water-based cements. These cements are clinically used for underlayment, lining, and restoration, and are available in hand-mixed, machine-mixed capsules, and single-component versions. Cement is a water-based material that cures through multiple reactions including acid-base reactions and polymerization reactions. For example, traditional polyalkenate glass ionomer cements are typically produced by reacting ion-releasing aluminosilicate glass with polyalkylene acid in an aqueous environment. The materials involved in this section are cured by acid-base water-based reactions, and can also be rapidly cured by appropriate external light sources.