摘要
目的研究舌向集中与解剖全口义齿在正中及侧向应力加载时其支持组织的应力分布情况。方法采用三维光弹实验的方法,在CawoodⅤ类无牙颌环氧树脂光弹模型上分别制作解剖和舌向集中全口义齿,并于正中及侧向状态下加载冻结,分析和比较支持组织的应力分布情况。结果常规全口义齿正中及侧向加载时,舌向集中较解剖传递更多应力至舌侧,力分配较为均匀。结论对于牙槽嵴重度吸收的无牙颌患者,在选用常规全口义齿修复时,可首先考虑舌向集中以辅助增强义齿的稳定性。
Objective To investigate the stress distribution of supporting tissues in complete dentures with lingualized occlusion and anatomic occlusion under centric and lateral stress load. Methods Three-dimensional photoelastic experiment mothod was adopted,and photoelastic models of epoxy were fabricated according to the Cawood V edentulous model.Complete dentures with lingualized occlusion and anatomic occlusion were prepared respectively.After frozen under centric and lateral stress load,the stress distribution of supporting tissues was analysed and compared. Results Under centric and lateral stress load,lingualized occlusion conveyed more stress to lingual side than anatomic occlusion in routine complete dentures,and the occlusion stress in lingualized occlusion was better distributed. Conclusion For patients with severe absorbed alveolar ridge undergoing complete denture restoration,lingualized occlusion should be considered in first place to increase the stability of dentures.
出处
《上海交通大学学报（医学版）》
CAS
CSCD
北大核心
2012年第1期73-76,共4页
Journal of Shanghai Jiao tong University:Medical Science
基金
上海市科委基金(08DZ2271100)~~
