不同平台转移距离对种植体周围骨改建的影响

Effect of different platform-switched widths on peri-implant bone remodeling

目的探讨不同平台转移距离对种植体周围骨改建的影响。方法选择2013年6月至2015年6月后牙区接受Ankylos系统单冠种植修复患者29例,3.5 mm与4.5 mm直径种植体各20颗,收集种植即刻与术后1年的X线片,分别从垂直向、水平向测量两组种植体近远中术后1年的骨量变化。应用SPSS 13.0软件包对数据进行统计学分析。结果两组种植体周围垂直向、水平向骨改建无显著差异(P>0.05),4.5 mm种植体骨沉积出现率高于3.5 mm,且两组骨沉积宽度有统计学差异(P<0.05)。结论平台转移距离增大有利于种植体周围骨组织的保存,在牙槽骨骨量充足的情况下应选平台转移距离大的种植体。

Objective To explore the influence of different platform-switched widths on peri-implant bone remodeling. Methods From June 2013 to June 2015,29 patients with 40 Ankylos implants in the posterior region were followed up with 3.5 mm（ 20 implants）and 4.5 mm（ 20 implants） diameters. The vertical and horizontal bone mass was evaluated by means of X-ray from immediate to one year after operation. The data were analyzed with SPSS 13.0 software package for paired t test. Results No significant difference in the vertical and horizontal bone mass was found between groups（ P〉0.05）,but the rate of bone deposition in 4.5 mm group was larger than in 3.5 mm group,and the average bone deposition width was statistically significant between groups（ P 〈0. 05）. Conclusions Increasing the platform-switched width is beneficial to maintain bone mass which surrounds the implant. In the case of sufficient alveolar bone,the implant with larger platform-switched width should be chosen.