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建立了全下颌种植固定义齿的三维各向异性有限元模型，模拟咀嚼肌和ＴＭＪ受力状态作约束反力，在２００Ｎ力静加载状态下分析义齿支架，种植体及种植体骨界面的受力情况。结果表明：１．末端种植体处义齿支架龈方压应力最大，方拉应力最大。２．末端种植体承受最大压应力和最大拉应力，随种植体位置与加载点间距离增大，种植体承受的压应力和拉应力逐渐减小。末端种植体骨界面应力最大，且随种植体位置与加载点之间距离增大，种植体骨界面的应力逐渐减小。３．种植义齿游离臂不利于种植体及骨界面应力的均匀分布。
A three-dimensional finite element model of full denture fixed denture was established to simulate the TMJ state of force and the masticatory muscle as the restraining reaction force. The interface of the denture support, implant and implants was analyzed under 200N static load Force situation. The result shows: 1. Implants at the end implants were the highest gingival compressive stress and the largest tensile stress was in the canthal. 2. The maximum compressive stress and maximum tensile stress were applied to the end implants. With the increase of the distance between implant site and loading point, the compressive stress and tensile stress of implants decreased gradually. The stress at the bone implant interface was the largest, and the stress at implant interface decreased with the increase of the distance between implant site and loading point. 3. Implant denture free arm is not conducive to implant and bone interface stress distribution.