不同空间排列双种植体支持修复下颌第一磨牙的力学分析  

Biomechanical analysis of mandibular first molar of double implant-supported with various spatial arrangements

作　　者：陶江丰[1] 陈宁[2] 吕令毅[3] 汤伟方[3] 

机构地区：[1]东南大学医学院附属江阴医院口腔科,南京210029 [2]南京医科大学口腔医学研究所南京医科大学口腔医学院种植科,南京210029 [3]东南大学土木工程学院,南京210096

出　　处：《口腔医学》2007年第9期460-462,共3页Stomatology

基　　金：江苏省科技厅社会发展项目(BS2006062);江苏省卫生厅科研基金资助项目(H20037)

摘　　要：目的分析双种植体支持修复下颌第一磨牙时,2种植体不同空间排列对种植体骨界面应力分布的影响。方法模拟不同空间排列的双种植体支持修复下颌第一磨牙的模型,在保证其它因素都不变的情况下,采用三维有限元法,分析种植体骨界面应力分布。结果种植体和周围骨应力随两种植体长轴交叉角度增大而逐渐增大,但差异并不显著。结论双种植体支持修复下颌第一磨牙时,2种植体适当内聚(<10°)排列,有利于种植体固位和支持。Objective To study the influence of different spatial arrangements of two implants on stress distribution at implant-bone interface in the mandibular molar region of double-implant restoration models. Methods Five models of mandibular first molar of double implant-supported with different spatial arrangements were constructed by using three-dimeusional finite eleraent method. Implant-bone interface stresses in these models were studied. Results The stresses in model D and E were slightly higher when compared with model A, B and C. But the differences of stress values were net statistically significant. Conclusion As for doubleimplant which supported mandibular first molar , the two implants tapered （ 〈 10 degree） can benefit the retention and support of implants.

关 键 词：三维有限元 种植体 应力分布 

分 类 号：R782.12[医药卫生—口腔医学]