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陶瓷修复体因瓷脆弱和较大的烧结收缩,广泛开展受到限制。虽然做了一些改进,但边缘不适合依然存在,同时具有成球倾向。烤瓷熔附金属修复体不但使其强度增加,边缘形态也有改善。但因唇面颈部显露金属,影响美观。采用边缘对接瓷的技术可以克服此不足。Prince最近介绍用蜡作为瓷粉结合剂的方法,修复体边缘适合性较差,平均40～50μm间隙。而台肩瓷粉使边缘适合性有改进,因其在高温下熔化、减少了烧结收缩,不易发生成球趋向。本实验对直接上瓷法制作的瓷对接式瓷金修复体的边缘适合性进行研究,并与台肩-斜面瓷金修复体和烤瓷夹冠进行比较;同时考察了台肩-斜面瓷金修复体
Ceramic restoration due to porcelain fragile and larger sintering shrinkage, widely carried out to be limited. Although some improvements have been made, the fringe is not suitable and there is a tendency to become a ball. Porcelain fused metal restorations not only increase the strength, but also improve the edge morphology. However, due to the exposed neck lip metal, affect the appearance. The use of edge docking porcelain technology can overcome this shortcoming. Prince recently introduced the use of wax as a binder for porcelain powder, with poor marginal fit, with an average gap of 40-50 μm. The porcelain shoulder porcelain edges to improve edge fit, because of its melting at high temperatures, reducing the sintering shrinkage is not prone to become the ball trend. In this experiment, the edge suitability of porcelain butt porcelain gold restoration directly made by porcelain method was studied and compared with the shoulder-bevel porcelain gold restoration and porcelain crown; at the same time, the effect of shoulder-bevel porcelain gold Restoration body