模具是制作蜡模的重要工具。模具内腔的尺寸精度和表面光洁度决定蜡模所能达到的精度和光洁度,亦影响到冠、桥的铸件质量。口腔临床中,制作修复体多采用石膏或人造石及超硬石膏等作为模具,其优点是快速、成本低,但精度差。用于研究修复体的模具,因制作件数多,精度要求高,则应采用机械加工模具,此种模具可以反复使用。并可得到尺寸一致、质量优良的蜡模。 Mold is an important tool for making wax patterns. The dimensional accuracy and surface finish of the mold cavity determine the accuracy and finish that can be achieved by the wax mold, also affect the casting quality of the crown and bridge. Oral clinical, the production of prosthesis to use more plaster or artificial stone and super anhydrite as a mold, which has the advantages of fast, low cost, but poor accuracy. Used to study the restoration of the mold, due to the production of a large number of pieces, high precision, you should use mechanical processing mold, this mold can be used repeatedly. And can get the same size, high quality wax mold.