【摘要】 作者应用牙CT扫描图像建立三维有限元种植模型，研究不同长度种植体在垂直、斜向、水平三种受载条件下周围骨界面的应力。结果显示：种植体长度增加两倍左右，而种植体骨界面最大应力区颈部的最大应力值只下降10％左右，从而提示，种植体长短对骨界面最大应力值影响不大，临床上进行口腔种植手术设计时无须过分强调种植体的长度选择。更多还原

【Abstract】 The effect of the length of implants on stress distribution is one of the im-portant subjects in implantology. In this study, Three dimensional finite element methodsmodel was constructed by dental CT images,The purpose of this study was to evaluate thestress distribution in bone adjacent to an implant after application of loading in horizontal,oblique and vertical direct. It was show that the highest stress occured at the cervical bonemargin adjacent to the implant only 10% decrease in inverse two times increase in implantlength,and correlated little to the implant length,therefore,it was unnecessary to emphasizethe length of the implants in clinic.更多还原