CEREC全瓷嵌体/高嵌体固定隐裂牙后抗折裂性能的实验研究  

Experimental study of fracture loading test of cracked teeth with CEREC CAD/CAM ceramic inlays/onlays

作　　者：杨彦春[1] 肖利[1] 周继祥[1] 

机构地区：[1]第三军医大学西南医院口腔科,重庆400038

出　　处：《第三军医大学学报》2009年第12期1217-1218,共2页Journal of Third Military Medical University

摘　　要：目的研究CEREC全瓷嵌体/高嵌体对隐裂牙的固定效果并测试抗折裂性能。方法将测试的离体牙分成A、B2组,A组为对照组,B组为实验组,每组各15个,分别制备成模拟隐裂牙;其中B组用CEREC全瓷嵌体/高嵌体固定,A组用光固化树脂充填,然后在万能测试机上垂直加载直至折裂进行抗折裂性能测试。结果用CEREC全瓷嵌体/高嵌体固定的离体模拟隐裂牙抗折强度高于对照组牙齿。结论CEREC全瓷嵌体/高嵌体可以有效固定隐裂牙。Objective To test the fracture loading of extracted cracked teeth with CEREC CAD/CAM ceramic inlays/onlays. Methods All the extracted teeth were divided into two groups （A： control group; B： test group; n = 15 teeth in each group）. All the teeth were prepared into those imitating cracked teeth. Those teeth in group B were strengthened with CEREC CAD/CAM ceramic inlays/onlays. All teeth were thermocycled and mounted for testing and then were loaded until fracture. Results The force of anti-fracture of extracted teeth imitating cracked teeth with CEREC CAD/CAM ceramic inlays/onlays （group B ） was obviously higher than that of the teeth without CEREC CAD/CAM ceramic inlays/onlays （group A）. Conclusion CEREC CAD/CAM ceramic inlays/onlays can effectively prevent the crack of teeth in clinical practice.

关 键 词：牙隐裂 CEREC 全瓷嵌体 CAD/CAM 全冠 

分 类 号：R783.1[医药卫生—口腔医学] R783.4[医药卫生—临床医学]