All-on-4种植固定义齿不同侧方咬合方式应力分布的有限元分析  

Analysis of stress distribution in different lateral occlusion patterns of All-on-4 fixed denture: A three-dimensional finite element study

作　　者：吴正敏 张勇 杨瑛[1] 张方明[1] WU Zhengmin;ZHANG Yong;YANG Ying;ZHANG Fangming(Department of Stomatology,Beijing Friendship Hospital,Capital Medical University,Beijing 100050,China)

机构地区：[1]首都医科大学附属北京友谊医院口腔科,北京100050 [2]北京中西医结合医院口腔科,北京100039

出　　处：《口腔医学》2025年第3期180-184,共5页Stomatology

基　　金：北京市卫生健康科技成果和适宜技术推广项目(BHTPP202027)。

摘　　要：目的分析不同侧方咬合方式对All-on-4种植固定义齿应力分布的影响。方法建立All-on-4种植固定义齿的模型,通过改变加载方式模拟侧方平衡[牙合]、组牙功能[牙合]和尖牙保护[牙合]。选取的加载力大小为垂直向200 N、水平向30 N。结果模拟平衡[牙合]模型各部分的最大应力值最小,尖牙保护[牙合]模型各部分的最大应力值最大,组牙功能[牙合]模型各部分的最大应力值较平衡[牙合]略大,比尖牙保护[牙合]明显减小。结论All-on-4支持的种植全口义齿的最终修复中侧方咬合可选择组牙功能[牙合]。Objective To analyze the effect of different lateral occlusion patterns on the stress distribution of All-on-4 implanted fixed dentures.Methods A model of All-on-4 implant fixed denture was established,and lateral balanced occlusion,group functional occlusion,and canine protection occlusion was simulated by changing the loading method.The selected loading force was 200 N vertically and 30 N horizontally.Results The maximum stress values of each part of the simulated balanced occlusion model were the smallest,while the maximum stress values of each part of the canine protection model were the largest.The maximum stress values of each part of the group functional occlusion model were slightly larger than those of the balanced occlusion model,but significantly smaller than those of the canine protection model.Conclusion Group function occlusion could be selected for the lateral occlusion in the final restoration of All-on-4 implant prosthesis.

关 键 词：All-on-4 咬合接触 组牙功能[牙合] 尖牙保护[牙合] 有限元分析 

分 类 号：R783.4[医药卫生—口腔医学]