摘要
目的研究Ⅱ类骨质平台转换连接种植体不同植入深度对皮质骨应力的影响。方法于2010年3月在滨州医学院(烟台校区)参照Ankylos种植系统种植体和实心基台的真实数据,利用Solidworks2007制图软件,模拟不同植入深度时平台转换连接种植体-基台-Ⅱ类骨质模型,导入Ansys workbench有限元软件,采用垂直向200N和斜向100N加载,分析不同植入深度时的应力分布。结果不同植入深度间皮质骨最大应力差异有统计学意义(P<0.01);当植入深度在皮质骨下2mm范围内时皮质骨最大应力在各向加载时均较稳定。结论为避免应力在骨组织中的过度集中,Ⅱ类骨质植入深度应控制在皮质骨下2mm范围内。
Objective To study the effect of different implant depth on stress distribution of cortical bone in type Ⅱ bone area using platform switching. Methods Using Solidworks2007 mapping software, we established the model of implant-abutment in type Ⅱ bone area with different implant depth. The model was loaded vertically and 45-degree from the abutment using Ansys-workbenchl 1.0 finite element analysis software. Then we analyzed the stress distribution on conditions of different implant depth. Results The difference of the maximum stress of cortical bone in different im- plant depth was very significant （P 〈 0.01）. When the implant depth was within 2ram in cortical bone, the maximum stress of cortical bone was suitable. Conclusion To avoid the excessive stress concentration on the bone, the implant depth should be controlled within less than 2 mm under the cortical bone.
出处
《中国实用口腔科杂志》
CAS
2011年第11期668-670,共3页
Chinese Journal of Practical Stomatology
关键词
种植体
平台转换
应力分布
皮质骨
implant
platform switching
stress distribution
cortical bone
