CAJ | 학술논문

目的评价不同角度基台用于前牙种植义齿修复的临床效果。方法选择2007年6月至2012年6月来中国医科大学口腔医学院种植中心接受前牙区种植修复的患者138例，共植入231颗ITI种植体并完成单冠修复，修复完成后根据选用的基台分为0°（直基台）、15°和20°基台组。随访6~66个月，分别记录3组种植义齿机械并发症的发生情况，拍摄X线片测量种植体周围骨吸收量，采用寿命表法计算不同角度基台种植义齿的5年累积存留率，应用SPSS 13.0软件包对数据进行统计学分析。结果所有种植义齿机械并发症的发生率为8.2%。3组不同角度基台种植义齿的机械并发症发生率及年均骨吸收量差异均无统计学意义（均P>0.05）。15°和20°基台组的5年累积存留率为97.8%，0°基台组为98.9%。结论种植义齿的基台角度与种植体周围骨吸收程度及机械并发症发生率无相关性，15°和20°的角度基台应用于前牙区种植义齿可取得较好的临床修复效果。
목적평개불동각도기태용우전아충식의치수복적림상효과。방법선택2007년6월지2012년6월래중국의과대학구강의학원충식중심접수전아구충식수복적환자138례，공식입231과ITI충식체병완성단관수복，수복완성후근거선용적기태분위0°（직기태）、15°화20°기태조。수방6~66개월，분별기록3조충식의치궤계병발증적발생정황，박섭X선편측량충식체주위골흡수량，채용수명표법계산불동각도기태충식의치적5년루적존류솔，응용SPSS 13.0연건포대수거진행통계학분석。결과소유충식의치궤계병발증적발생솔위8.2%。3조불동각도기태충식의치적궤계병발증발생솔급년균골흡수량차이균무통계학의의（균P>0.05）。15°화20°기태조적5년루적존류솔위97.8%，0°기태조위98.9%。결론충식의치적기태각도여충식체주위골흡수정도급궤계병발증발생솔무상관성，15°화20°적각도기태응용우전아구충식의치가취득교호적림상수복효과。
Objective To evaluate clinical influence of the different angulated abutments on the implant teeth in the an-terior region. Methods From June 2007 to June 2012,138 patients with 231 ITI implants in the anterior region were followed up for 6- 66 months. Implant restorations were divided into three groups according to their abutments:0°,15°, 20° . Cumulative survival rate was calculated by life-table analysis. The software of SPSS 13.0 was used for statistical analysis. Results There was 8.2% biomechanical complications in 231 implants. No significant difference in annual crestal bone loss and biomechanical complications was found among three groups(P>0.05). Moreover,implant cumula-tive survival rate with 15° and 20° abutments was 97.8%,and with 0° abutment it was 98.9%. Conclusion Angulated abutments do not significantly influence peri-implant crestal bone loss and biomechanical complications;implant restora-tions with 15°and 20°angulated abutments may be successfully used in the anterior areas.