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历来的铸模包埋法,在理论上虽是一个很好的方法,但在临床上还未被广泛采用。使用这方法现有的铸模包埋材料主要是白硅石和高温用磷酸盐两大类。但在强度、膨胀率、表面性状方面存在一些问题,特别是高温用磷酸盐包埋材料还有过膨胀倾向、凝固时发热变形、铸造体不易取出以及表面性状不佳等。因此作者进行了既能满足模型材料又能满足包埋材料两方面性能要求的各种研究,最近采用水溶性显着的三聚氰酰胺树脂
Inherent mold embedding method, although in theory is a good method, but it has not been widely used in clinical practice. Using this method, the existing mold embedding materials are mainly white silica and high temperature phosphate two categories. However, there are some problems in the aspects of strength, expansion rate and surface properties. In particular, high temperature phosphate-impregnated materials have the tendency of over-swelling, heat-setting during solidification, the casting body is not easy to remove, and the surface properties are poor. Therefore, the author has carried out a variety of studies both to meet the performance requirements of both the model material and the embedded material. Recently, a water-soluble melamine resin