基桩预备过程对种植体与基桩结合稳定性的影响

目的　探讨在调整 Ti Adapt基桩时 ,预备程序对种植体和基桩的结合稳定性是否有影响。方法　30个 Branemark种植体 (10个 RP,10个 NP,10个 WP)分别与 10个 Ti Adapt RP、10个 Ti Adapt NP和 10个Ti Adapt WP组成三组 ,每组的标本再进一步分成 A和 B两个亚组 ,A亚组用于进行基桩预备程序 ,B亚组作为对照组 ,并记录预备前后基桩和种植体之间的密合度。结果　 RP组和 WP组的 A和 B亚组之间无显著性差异 (P值分别为 0 .180和 0 .42 3) ,预备前后也无显著性差异 (P值分别为 0 .0 5 1和 0 .494) ,NP组的 A和 B亚组间差异有显著性(P=0 .0 47) ,NP组预备前后也有显著性差异 (P=0 .0 45 )。结论　基桩预备程序加强了种植体和基桩的结合

The Preparation Procedure of TiAdapt Abutment Effect on the Implant to Abutment Joint Stability

Objective This study was designed to determine the difference in the implant to abutment joint stability resulting from the preparation procedure in adjusting the TiAdapt abutment. Methods Thirty Branemark implants (10RP,10NP,10WP) and 10 TiAdapt RP,TiAdapt NP and TiAdapt WP abutments formed the experimental populations of 3 groups. Samples in each groups were further divided into subgroups A and B. Subgroup A was operated with preparation procedure whereas the other served as control. The torque required and the gap between abutment and implant before and after preparation were measured. Results There were no significant differences in group RP and group WP; there were significant differences in group NP at the significance level of 0.05. Conclusion These results indicate that the implant to abutment joint stability has been strengthened by the abutment preparation procedure.