Abstract:

Abstract：Objective To investigate the application value of Cerec AC chairside immediate all-ceramic restorations in tooth defects and esthetic restorations，and to summarize the methods of clinical application and operation essentials. Methods Totally 105 immediate all-ceramic restorations including 27 inlays，32 onlays，15 veneers and 31 crowns were fabricated by Cerec AC system in 83 patients. After careful tooth preparation，intraoral optical impressions were taken，and the restorations were designed and milled by CEREC AC system. All the prosthesis were glazed and cemented to the prepared teeth. The clinical efficacy was analyzed with modified USPHS criteria in 3 and 6 months. Results The retention，stability，margin fitness，fracture，color match，shape，occlusal relationship，secondary caries，and patient satisfaction of all the prosthesis had been proven to be good enough to the clinical standard. Conclusion Application of Cerec AC system to repair tooth defect can obtain good short- term curative and aesthetic effects.

Key words: CAD/CAM, Cerec AC, tooth defect, esthetic prosthodontics

摘要：

目的 探讨Cerec AC椅旁即刻全瓷修复系统在牙体缺损及美学修复中的应用，总结该系统的使用方法及临床操作要点。方法 选择2012年10月至2013年12月于中国医科大学附属口腔医院干诊科就诊的牙体缺损或需美容修复患者83例（105颗牙），使用Cerec AC系统进行全瓷修复，修复体类型包括27个嵌体、32个高嵌体、15个贴面、31个单冠。常规牙体预备完成后，口内制取光学印模，计算机指导铣床研磨修复体，染色上釉、黏结。采用改良美国公共健康协会修订标准（USPHS）对修复体进行评价及分析。结果 随访观察6个月，83例患者的全部修复体保存完整，边缘密合，无松动、脱落、折断、继发龋等不良现象发生；咬合关系、美学效果良好，患者对修复效果及使用情况十分满意。结论 应用Cerec AC系统进行牙体缺损修复能获得良好的近期疗效及满意的美学效果。

关键词: CAD/CAM, Cerec AC, 牙体缺损, 美学修复