颧牙槽嵴支抗稳定性影响因素的三维有限元分析  

Three-dimensional finite element analysis of factors affecting stability of anchorage in zygomatic alveolar ridge

作　　者：刘珂[1] 轩诗杰 刘鑫[1] LIU Ke;XUAN Shijie;LIU Xin(State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration,National Clinical Research Center for Oral Diseases,Shaanxi Clinical Research Center for Oral Diseases,Department of Orthodontics,School of Stomatology,The Fourth Military Medical University,Xi an 710032,China)

机构地区：[1]口颌系统重建与再生全国重点实验室,国家口腔疾病临床医学研究中心,陕西省口腔疾病临床医学研究中心,第四军医大学第三附属医院正畸科,陕西西安710032 [2]口颌系统重建与再生全国重点实验室,国家口腔疾病临床医学研究中心,陕西省口腔疾病国际联合研究中心,第四军医大学第三附属医院口腔解剖生理学教研室,陕西西安710032

出　　处：《口腔医学》2025年第2期100-104,共5页Stomatology

基　　金：国家口腔疾病临床医学研究中心专项课题(LCA202203)。

摘　　要：目的利用三维有限元对植入到颧牙槽嵴区的微种植体进行应力分析,以期为临床选择植入到该部分的最适微种植体。方法利用ANSYS软件建立颧牙槽嵴区颌骨三维有限元模型;同时建立长度为8、9、10、11、12 mm,螺纹顶角为30°、45°、60°、75°、90°、105°、120°共35种有螺纹微种植体三维有限元模型;模拟微种植体植入颌骨内,建立植入后模型。对微种植体骨界面进行应力分析。结果微种植体-骨界面最大应力值集中在骨皮质中,颊板皮质骨最大应力值、松质骨最大应力值、微种植体最大位移量随螺杆长度增大而减少。螺纹顶角对微种植体-骨界面最大应力值和位移量影响不大。结论螺杆长度影响微种植体-骨界面的应力分布,在颧牙槽嵴处植入长螺杆微种植体可提高其稳定性。Objective To investigate the influence of micro-implant length and screw angle on stress distribution and displacement of micro-implant bone interface when micro-implant was implanted in zygomatic alveolar ridge and bear a certain load,in order to provide certain theoretical basis for micro-implant selection and further optimization design in clinical practice.Methods A three-dimensional finite element model of the jaw in the zygomatic alveolar ridge region was established using ANSYS software.At the same time,35 kinds of micro-threaded implants with length of 8,9,10,11,12 mm and angle of 30°,45°,60°,75°,90°,105°,120°were established.The micro-implant was simulated to be implanted in the jaw bone,and the implantation model was established.Stress analysis was performed on the bone interface of the micro-implant.Results The maximum stress of micro-implant bone interface occurred in the bone cortex.The maximum stress value of buccal cortical bone,cancellous bone and micro-implant displacement decreased with the increase of screw length.The angle of screw had little effect on the maximum stress and displacement of micro-implant-bone interface.Conclusion The screw length has an impact on stress distribution of micro-implant bone interface.The micro-implant with longer length can improve its stability in zygomatic alveolar ridge.

关 键 词：微种植体 三维有限元分析 螺纹顶角 长度 

分 类 号：R783.5[医药卫生—口腔医学]