下颌后牙区骨组织与种植体初期稳定性的相关性研究

摘要

目的：研究下颌骨后牙区骨组织结构对种植体初期稳定性的影响。方法：20名患者术前拍摄CT，通过软件SimPlant测量得到种植体周围平均骨密度及种植体颈部骨皮质厚度。共植入24枚种植体，术中植入后即刻用Osstell仪器测量得到种植体稳定系数(ISQ)。所有数据通过SPSS 17软件包进行统计学分析（P<0.05）。结果：种植体颈部骨皮质厚度与ISQ相关（P<0.05），颌骨后牙区骨密度与ISQ无相关关系（P>0.05），性别、年龄与ISQ无相关关系(P>0.05)。结论：术前对下颌骨后牙区骨密度的测量不能预测种植体初期稳定性，种植体初期稳定性与种植体颈部骨皮质厚度相关；与种植体初期稳定性相关的因素还需进一步研究。%Objective:The objective of this study was to evaluate the influence mandibular bone structure in posterior region exerting upon implant primary stability. Methods:20 patients took CT scan pre-opera-tion and got bone density around the implant, cortical bone thickness though software SimPlant. 24 im-plants were implanted and implant stability quotient (ISQ) were measured using Osstell after implanta-tion. All statistical analysis was performed using the SPSS 17.0 statistical package (P<0.05). Results:This study showed correlation between cortical bone thickness of cervical implant and ISQ (P<0.05). There was no significant correlation between bone density in posterior region and ISQ (P>0.05). There were no correlation among age, sex, and ISQ(P>0.05). Conclusions: Preoperative measurements of bone density in posterior region can't predict implant primary stability. Cortical bone thickness of cervical implant correlated positively with implant primary stability. Further studies are necessary to evaluate the factors with implant primary stability.