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本文采用三维有限元应力分析法，以下颌牙槽嵴模型为实验对象，建立起三个有限元分析模型：无软村模型、有软衬模型和无粘膜无软衬模型。分别以五种方式加载，对牙槽骨内的应力分布和基托位移情况进行了分析，结论如下：①软衬前后应力峰值无明显改变，假设无粘膜无轨衬时应力峰值很大，提示临床上软衬材料主要适应征是粘膜萎缩较薄的患者；②用软衬材料后基托位移增大；③软衬材料不能改变牙槽骨支持始力的主要部位，下颌牙槽嵴前牙区舌斜面和后牙区须、舌斜面为主要力支持区，牙槽嵴顶不是应力最大的区域。
In this paper, three-dimensional finite element stress analysis method, the mandibular alveolar ridge model for the experimental object, the establishment of three finite element analysis model: no soft village model, a soft lining model and a mucosal non-soft lining model. The stress distribution and base displacement in alveolar bone were analyzed by five ways respectively. The conclusions are as follows: ① There was no obvious change of peak stress before and after soft liner, The main application of soft lining material is mucosal atrophy in patients with thin; ② with soft lining material after the base displacement increases; ③ soft lining material can not change the main part of alveolar bone supporting force, anterior mandibular alveolar ridge area Tongue bevel and posterior teeth beard, tongue slope as the main force supporting area, alveolar crest is not the most stress area.