计算机辅助设计与辅助制作全瓷冠的八年临床随访

目的 对Cerec2计算机辅助设计与辅助制作(CAD-CAM)系统制作的全瓷冠进行8年随访,评价其远期效果,以期为临床提供参考.方法 使用Cerec2 CAD-CAM系统对22例患者的24颗牙体缺损的患牙进行CAD-CAM全瓷冠修复,定期随访,末次随访时参照改良美国加州牙科协会评价标准对CAD-CAM全瓷冠进行评价,同时对患者进行满意度问卷调查,并进行Kaplan-Meier生存率分析.结果 除3件CAD-CAM全瓷冠失败外,其余21件CAD-CAM全瓷冠随访82个月～102个月.除费用外,患者对其余指标的满意度达100%.Kaplan-Meier生存率分析显示,CAD-CAM全瓷冠的8年留存率为88%.结论 Cerec2 CAD-CAM系统制作的全瓷冠可在口腔环境中长期保存并行使功能.

An 8-year follow-up study of Cerec2 computer aided design and computer aided manufacture of all-ceramic crowns

Objective To evaluate the clinical performance of the crowns made by Cerec2 computer aided design and computer aided manufacture(CAD/CAM)system.Methods Twenty four teeth were restored with Cerec2 CAD/CAM crowns.Eight years after delivery of the prostheses,the all-ceramic crowns were evaluated using modified standard of California Dental Association quality evaluation system.Patients filled out a satisfaction questionnaire at the same time.And Kaplan-Meier analysis was carried out.Results Three out of 24 restorations were rated as failure.Kaplan-Meier analysis showed that the success rate of Cerec2 crowns eight year following delivery was 88%.Conclusions Crowns made by Cerec2 CAD/CAM system can survive in oral condition and function well for 8 years.