The finite element analysis of deformation of maxillary sinus mucosa when elevated by three lift materials

VernacularTitle:3种提升材料对闭合式上颌窦底提升术上颌窦黏膜形变影响的力学分析
Author: Xiaofang LIU ; Lingling HU ; Guangbao SONG ; Longquan SHAO ; Xiaobin ZHU ; Dalie LIU ; Jincai ZHANG
Publication Type:Journal Article
Keywords: Maxillary sinus mucosa; Deformation; Von mise stress; Finite element analysis; Maxillary sinus lift
From: Journal of Practical Stomatology 2014;(6):831-834
CountryChina
Language:Chinese
Abstract: Objective:To compare the maxillary sinus mucosa's stress distribution when elevated by three lift materials.Methods:Three Finite element models of maxillary sinus mucosa with 0.3 mm thickness elevated by implant,grafting autogenous cancellous bone and hydroxyapatite respectively were established in the specific units.ANSYS finite element analysis software was used to evaluate maxillary sinus mucosa deformation by the simulated closed sinus lift surgery.Differences of Von Mises stress values of mucosa surface were calculated when maxillary sinus mucosa lift height was increased from 1 mm to 5 mm according to the a large deformation theory. Results:The Von Mises stress values on membrane surface elevated by implant,grafting autogenous cancellous bone and hydroxyapa-tite bone substitute materials showed no difference within 5 mm elevation.Conclusion:Closed maxillary sinus floor lifting operation with implant elevating the maxillary sinus membrane directly is a simple and minimally invasive way for sinus floor elevation.