论文部分内容阅读
近年来,将具有优良特性的精制陶瓷材料作为一种可能的牙科新型材料受到重视。为把医用陶瓷磷酸钙系结晶玻璃(CPCC)应用于牙冠修复,而一直在对其进行基础研究。CPCC 与天然牙齿的化学成分相类似。其硬度、热膨胀系数以及热传导率等与牙釉质基本相同。尤其是机械强度非常好,材料的耐久性和生物亲和性也较好。作为牙冠修复材料的一个不可缺少的条件,该材料在熔化时的粘度极低,故能用于熔蜡铸造法制作冠。且具有优良的形态再现性。这样的新型牙冠修复材料,具备了理想的条件。作者着眼于确立用CPCC 材料制作冠的标准,从各个角度进行
In recent years, refined ceramic materials with excellent characteristics have been valued as a possible novel dental material. In order to apply medical ceramic calcium phosphate based crystallized glass (CPCC) to crown restoration, basic research has been carried out. The chemical composition of CPCC is similar to that of natural teeth. Its hardness, thermal expansion coefficient and thermal conductivity and enamel basically the same. In particular, the mechanical strength is very good, the durability and biological affinity of the material are also good. As an indispensable condition for crown restoration, the material has a very low viscosity when melted and can therefore be used as a crown in a fused wax casting process. And has excellent morphological reproducibility. Such a new type of crown repair materials, with the ideal conditions. The author looks at establishing a standard for making crowns with CPCC materials, from all angles