遵义医科大学学报2026，Vol.49Issue(4)：397-404,413,9.
偏颌患者(牙合)平面横向倾斜度和Spee曲线改变对颞下颌关节的生物力学分析
Biomechanical analysis of the transverse occlusal plane inclination and spee curve alteration on the temporomandibular joint in patients with mandibular deviation
摘要
Abstract
Objective To investigate the influence of transverse occlusal plane leveling and Spee curve flattening on stress distribution in the temporomandibular joint(TMJ)condyles in patients with mandibular laterognathism,providing a biomechanical basis for clinical treatment strategies.Methods Based on Cone-beam CT(Cone Beam Computed Tomography,CBCT)data from a patient with mandibular laterognathism,three-dimensional finite ele-ment models of the mandible,teeth,and temporomandibular joints were established.Four working conditions were set:Condition 0(original laterognathic state),Condition 1(increasing cusp height on the deviated side),Condition 2(decreasing cusp height on the non-deviated side),and Condition 3(Spee curve flattening).The distribution of von Mises stress,maximum principal stress,and minimum principal stress in bilateral condyles under intercuspation loading was analyzed.Results The baseline model(Condition 0)showed significantly high-er stress in the condyle on the non-deviated side compared to the deviated side.Although Conditions 1 and 2 al-tered the stress values,they did not change the stress concentration pattern.Condition 3(Spee curve flatten-ing),while moderately increasing stress on the non-deviated side,significantly reduced stress on the deviated side and resulted in a more dispersed stress distribution on both sides,effectively alleviating localized stress con-centration.Conclusion Compared with simple transverse correction of the occlusal plane,flattening the Spee curve can more effectively optimize stress distribution in the TMJ of patients with mandibular laterognathism,im-proving the biomechanical environment.This suggests that vertical control,especially the management of an ex-cessively steep Spee curve,should be emphasized in the treatment of mandibular laterognathism.关键词
偏颌/颞下颌关节/三维有限元分析/Spee曲线/生物力学/应力分析Key words
mandibular deviation/temporomandibular joint/three-dimensional finite element analysis/spee curve/biomechanics/stress analysis分类
医药卫生引用本文复制引用
王浩丞,赵越,陈智怡,孙敏敏,刘媛媛..偏颌患者(牙合)平面横向倾斜度和Spee曲线改变对颞下颌关节的生物力学分析[J].遵义医科大学学报,2026,49(4):397-404,413,9.基金项目
山东省自然科学基金青年项目(NO:ZR2022QH273) （NO:ZR2022QH273）
潍坊市卫生健康委员会基金资助项目(NO:WFWSJK-2023-377). （NO:WFWSJK-2023-377）
