计算机辅助设计与制作复杂固定桥  

Computer-aided design and manufacture of complex fixed partial denture

作　　者：柳正明[1] 俞青[1] 周峰[1] 丁晨[1] 

机构地区：[1]南京大学口腔医学院.南京市口腔医院,210008

出　　处：《实用口腔医学杂志》2011年第5期658-662,共5页Journal of Practical Stomatology

摘　　要：目的:总结运用CEREC inLab牙科CAD/CAM系统设计与制作复杂全瓷固定桥修复体的操作体会。方法:临床选择50例患者共53件固定桥,通过Sirona inEos计算机印模采集系统获取诊断蜡型的三维数据,将其与固定桥工作区模型数据拟合,基于inLab V 3.60软件的Reduced程序设计并制作精确的氧化锆内冠支架,采用饰瓷完成最终修复体,最后按照改良的USPHS标准对修复体进行评价。结果:经过6～12个月的随访观察,所有氧化锆全瓷固定桥修复体临床检查边缘密合,未出现崩瓷或折裂现象,患者对修复体的外形与颜色满意。结论:运用仿型技术制作的全瓷固定桥支架外形可控,为饰瓷预留空间合理,有助于提高氧化锆全瓷修复体的质量。Objective：To evaluate the effects of complicated all-ceramic posterior fixed partial denture（FPD） fabricated by CEREC inLab CAD/CAM system.Methods：50 patients with 53 unit restorations were enrolled in this study.First,all frameworks were manually fabricated on the master cast out of wax similar to the metal-ceramic technique.Then,the shape of wax frameworks and abutment teeth was captured and digitized by Sirona inEos system,each individually shaped framework to grant a uniform thickness to the ceramic veneer was created based on the reduced program of inLab V 3.60 software.All restorations were veneered with VITA VM9 and evaluated at baseline,6 and 12 months after placement using modified USPHS criteria.Results：During the 6 to 12 month follow-up,none of the FPDs had to be replaced due to framework fracture or unrestorable delamination of the ceramic veneer,the shape and colour of all restorations were satisfied.Conclusion：Zirconia frameworks demonstrated sufficient stability for all-ceramic fixed partial denture using prototype processing technology.

关 键 词：CEREC CAD/CAM 氧化锆 全瓷修复体 

分 类 号：R783[医药卫生—口腔医学]