CAJ | 학술논문

目的：比较3种提升材料对闭合式上颌窦底提升术上颌窦黏膜形变的影响。方法：在 ANSYS 有限元分析软件的SHELL 63单元中分别建立0．3 mm 厚度上颌窦黏膜与纯钛种植体、自体松质骨、羟基磷灰石骨粉有限元模型，分别计算3种材料提升上颌窦黏膜1～5 mm 时黏膜表面 Von mises 应力值，并进行对照分析。结果：通过对0．3 mm 厚度上颌窦黏膜提升1～5 mm 的形变与应力分析，发现应用纯钛种植体、自体松质骨与人工羟基磷灰石骨粉3种材料提升上颌窦黏膜，黏膜表面的应变相似，应力值曲线高度重叠，随着高度增加，应力增加的趋势亦基本一致，3种材料对上颌窦黏膜表面应变与应力的影响几乎没有差别。结论：使用松质骨、人工羟基磷灰石骨粉、纯钛种植体抬高上颌窦黏膜对黏膜形变是没有影响的，行闭合式上颌窦底提升手术应用种植体直接提升上颌窦黏膜是相对简易及微创的手术方式，推荐在临床工作中使用。
목적：비교3충제승재료대폐합식상합두저제승술상합두점막형변적영향。방법：재 ANSYS 유한원분석연건적SHELL 63단원중분별건립0．3 mm 후도상합두점막여순태충식체、자체송질골、간기린회석골분유한원모형，분별계산3충재료제승상합두점막1～5 mm 시점막표면 Von mises 응력치，병진행대조분석。결과：통과대0．3 mm 후도상합두점막제승1～5 mm 적형변여응력분석，발현응용순태충식체、자체송질골여인공간기린회석골분3충재료제승상합두점막，점막표면적응변상사，응력치곡선고도중첩，수착고도증가，응력증가적추세역기본일치，3충재료대상합두점막표면응변여응력적영향궤호몰유차별。결론：사용송질골、인공간기린회석골분、순태충식체태고상합두점막대점막형변시몰유영향적，행폐합식상합두저제승수술응용충식체직접제승상합두점막시상대간역급미창적수술방식，추천재림상공작중사용。
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.