3I和奥齿泰种植体系统周围组织稳定性差异的临床对比研究

目的：探讨3I种植体和奥齿泰种植体修复后对种植体周围软硬组织的影响，为临床种植系统的选择提供临床依据。方法随机选取单牙缺失需种植修复的患者42例，分别行3I种植体（23枚）和奥齿泰种植体（26枚）种植修复，于修复后3、6、9和12个月测量种植体周围骨吸收、龈沟出血指数（sulcus bleeding index， SBI）、菌斑指数（plaque index，PLI）、探诊深度（probing depth，PD）、种植体周围龈沟液（peri?implant crevicular fluid ，PICF）的天冬氨酸转氨酶（aspartate aminotransferase ，AST）水平，并选取对侧健康牙作为对照。结果种植体修复后1年，种植体颈部骨组织呈现不断吸收趋势，且奥齿泰种植体骨吸收量大于3I种植体（P <0.05）。在修复后6、9和12个月，3I种植体SBI、PLI均低于奥齿泰种植体（P<0.05），3I种植体AST水平与天然牙差异无统计学意义，而奥齿泰种植体AST水平高于天然牙（P<0.05）。修复后9、12个月，3I种植体PD明显低于奥齿泰种植体（P<0.05）。结论3I种植体对种植体周围骨组织及周围牙龈组织的影响较奥齿泰小，但两者在研究期内均表现出良好的临床效果。

Clinical comparative study of the influences on the stability of peri-implant tissues between 3I and Osstem im-plants

Objective The aim of this study was to compare the influences on peri?implant soft tissues and bone tis?sues by 3I and Osstem implants. Methods 42 patients underwent implant restoration(23 3I implants and 26 Osstem implants). 49 natural normal teeth were selected as comparison. The bone loss, sulcus bleeding index (SBI), plaque in?dex (PLI), probing depth (PD), aspartate aminotransferase(AST) level in peri?implant crevicular fluid (PICF) were mea?sured at the time of 3, 6, 9 and 12 months after the abutment connection. Analysis of data was performed by software SPSS 17.0. Results The bone loss of Osstem implant system was more than those of 3I implant system (P<0.05). SBI and PLI of Osstem implant system were higher than that of 3I implant system at the time of 6, 9 and 12 months after abutment connection (P<0.05). There was no significant difference of AST level in PICF between natural teeth and the 3I implant system, while AST level in PICF of Osstem system group was higher than that of natural teeth (P<0.05). PD of 3I implant system was lower than that of Osstem implant (P<0.05). Conclusion The influence level of 3I implant system on the surrounding peri?implant bone and periodontal tissues is less than that of Osstem implant system, but both implants showed a good clinical effect in the short period.