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金属-烤瓷修复体(简称P F G)应用于固定部分义齿修复,它结合了烤瓷的美观和金属的强度,边缘密合性等优点。本文对PFG作了长期临床观察,以便总结失败率,提出改进方法。调查了1973年9月至1980年5月在Ghent大学牙科学校制作金属-烤瓷修复体的844名病人,共计2181个修复体,其中单冠513个,桥体或固位体1668个,固定部分义齿554个。两年随访一次,观察了7年。制作方法:P F G比塑料全冠需更多地磨除牙齿,为达到美观和功能要求,需要的最小厚度是:金合金冠0.2～0.3mm,不透明瓷0.35mm,体层瓷0.65mm,即牙体组织必须去除1.2～1.3mm,否则会使修复体外形过凸,导致菌斑沉积,对牙龈产生刺激。颈部牙体预备,一般预备斜肩形(beveled shoulders),如美观要求高时,预备槽形
Metal-porcelain restoration (PFG) is used in fixed partial dentures. It combines the beauty of porcelain with the strength of metal, edge adhesion and so on. This paper made a long-term clinical observation of PFG in order to summarize the failure rate and propose ways to improve it. Investigated 844 patients who performed metal-to-porcelain restoration at the Ghent University School of Dentistry from September 1973 to May 1980, for a total of 2,181 prostheses, of which 513 were single crown, 1668 were pontomers or retainers, and were immobilized Partial denture 554. Follow-up two years, observed for 7 years. Production methods: PFG than the plastic crown to be more teeth removal, in order to achieve aesthetic and functional requirements, the minimum thickness required is: gold alloy crown 0.2 ~ 0.3mm, opaque porcelain 0.35mm, porcelain body 0.65mm, that is, teeth Body tissue must be removed 1.2 ~ 1.3mm, otherwise the prosthesis shape will be too convex, leading to plaque deposition, stimulate the gums. Neck preparation, generally prepared beveled shoulders (beveled shoulders), such as the aesthetic requirements of high, the preparation of trough