种植金瓷固定桥的瓷层厚度对瓷裂影响的试验研究  

Experimental study on influence of porcelain thickness on porcelain cracks in implant-supported metal-porcelain fixed bridge

作　　者：王航[1] 巢永烈[1] 梁星[1] 邝先昊[1] 

机构地区：[1]华西医科大学口腔医学院修复学教研室,成都610041

出　　处：《口腔医学纵横》1998年第1期3-6,共4页Journal of Comprehensive Stomatology

基　　金：卫生部青年科学研究基金

摘　　要：作者研究了烤瓷厚度对松风一镍铬合金系列的种植金瓷固定义齿瓷裂的影响、结果表明：当瓷粉厚度达到3.5mm时，开始出现瓷裂；达到4mm时，全部样本产生瓷裂；连接体是产生裂纹的主要部位；用体视镜观察裂纹优于肉眼观察。提示应保证涂塑的体瓷粉厚度小于3．5mm，为了更好地满足此要求，可在种植体基桩与支架固位体之间做内冠。同时要求支架连接体外形和连接体处的瓷表面外形为平缓曲面。This study investigated the influence of porcelain thickness on porcelain crack in implant-supported metal peporcelain fixed bridge. The results indicated:porcalain crack begen to appear in the thickness of 3.smm for body porcelain powder ; cracks existed in all specimens with thickness of 4. omm ; connectors were favourite locatios of cracks. Therefore, the design and fabrication should avoid sudden changes in shape of both connector and porcelain and porcelain powder thickness no less than 3.5mm; otherwise, internal crown between metal base and abutment should be necessary to satisfy those repuirements.

关 键 词：种植固定桥 烤瓷熔附金属 瓷层厚度 瓷裂 金瓷 

分 类 号：R783.3[医药卫生—口腔医学]