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本文采用二维有限元法，对单个螺旋型种植牙，在轴向、侧向１５°、３０°、４５°时，载荷３００Ｎ，分析比较了骨界面的应力分布规律。结果表明：轴向载荷时，颈部骨内应力比根端部骨内应力小，侧向载荷时，则颈部应力大，根端部应力小；颈部骨内应力轴向载荷时为最小，随着侧向载荷角度的增加，骨内应力值逐渐增加，每增加５°，骨内应力约增加１ＭＰａ；临床种植时，种植牙应尽可能轴向垂直种植，避免颈部骨内应力过大
In this paper, a two-dimensional finite element method was used to analyze the stress distribution of a single helical dental implant with a 300N load in axial and lateral directions of 15 °, 30 ° and 45 °. The results show that the stress in the neck is less than that in the root, and the stress in the neck is large and the stress in the root is small when the lateral load is applied. The axial stress in the neck is the minimum , With the increase of lateral load angle, the value of intraosseous stress gradually increases, with each increase of 5 °, the internal stress increases about 1MPa. In clinical implantation, the dental implant should be planted vertically and vertically as far as possible to avoid the cervical bone stress Big