下颌总义齿不同厚度黏骨膜的能量缓冲作用分析

Energy relieving effect of different thickness of mucosa beneath mandibular complete denture

目的 分析下颌总义齿受力时 ,不同厚度黏骨膜能量缓冲作用的大小 ,运用能量分析方法探讨口腔修复的有关临床问题。方法 应用CT扫描法建立下颌总义齿的三维有限元模型 ,计算黏骨膜厚度不同时义齿及其支持组织受力产生的弹性变形能以及各部分变形能占体系总变形能的百分比。结果 随着黏骨膜厚度的增加 ,黏骨膜弹性变形能占体系总变形能的百分比由 4 4 .5 3%增至5 2 .0 1%和 5 7.91%。结论 黏骨膜的能量缓冲能力随其厚度的增加而增大 。

Objective To analyze the energy relieving effect of different thickness of mucosa beneath mandibular complete denture and try to analyze clinical question of prosthodontics using energy analysis methods.Methods A 3 DFE model of the mandibular complete denture and its supporting tissue were set up. Their elastic deformed energy and the percentage in the whole system were respectively calculated when mucosal thickness was different. Results The percentage of mucosal elastic deformed energy grew from 44.53% to 52.91% and 57.91% with its different thickness under static loads. Conclusions The energy relieving effect of mucosa grows with its thickness and the approach of energy analysis is one of effective method on oral biomechanics questions.