Conclusion : the experiment , from the point of biomechanics , provides the theoretical basis for the stress distribution of occlusal rest design and further proves the advantages of mesial occlusal rest 结论：从生物力学角度为（牙合）力分配和（牙合）支托设计等提供了理论依据，进一步论证了近中（牙合）支托的优越性。
Methods ta and mm emg during icp maximal clenching were recorded in 20 dentate normal subjects , when they weared no occlusal splint , relaxation splint and mandibular stabilization splint 方法20名健康志愿者不戴（牙合）垫与戴松弛性（牙合）垫和下颌稳定性（牙合）垫时分别作正中紧咬，比较颞肌前束、咬肌肌电积分值的改变。
Results all 11 patients with mandibular micronathia obtained the improved occlusion with their mandibular expected elongation , for instance , their open - bite and teeth displacement were partially corrected 结果收治11例小颌畸形患者，在获得预期下颌骨延长的同时，开（牙合） 、牙齿错位等畸形程度明显减轻，患者的咬合关系改善。
Conclusion it can be concluded that the not uniformly distributed occlusal force produced from the larger axial gradient degree , the defect of dentition , and the abrasion of teeth , may be the important factors which cause wedge - shaped teeth defect 结论研究结果说明，牙轴倾度增大、牙列不完整和牙齿磨损导致的（牙合）力异常分布，可能是楔状缺损形成和发展的主要因素。
Results the occlusion contact data and graph of wedge - shaped teeth defect had the features of trauma occlusion . 42 . 97 % of them has the larger axial gradient degree , 96 . 09 % of them has abration in different classes , 46 . 29 % missing the front teeth and 57 . 03 % missing the buccal teeth 方法采用临床物理检查和石膏模型测量，确定楔状缺损牙轴倾度、磨损指数、牙缺失等指标；采用计算机图像处理技术，自行编制软体程式及硬体系统，测试被检光（牙合）片，分析并提取楔状缺损牙接触（牙合）力、面积、接触点（牙合）应力等资料和图形信息。
Results : 1 ) under the same condition of loading , the stress and displacement of mesial occlusal rest design was smaller than that of distal occlusal rest design in abutment teeth and soft tissue under the base , however , the magnitude in the soft tissue under base was bigger . 2 ) when a distributed vertical load was applied to the artificial tooth abutment teeth regions , the stress distribution was similar to that of concentrated load in the artifitial tooth , and stress magnitudes were higher . 3 ) under the condition tested , the mesial occlusal rest design caused the stresses that were more in line with the long axes of the abutment teeth than did the distal occlusal rest design 结果： 1 )在同一加载条件下，近中（牙合）支托设计与远中（牙合）支托设计相比，基牙及基托下软组织的应力和位移值减小；基托下软组织的应力和位移值大于基牙； 2 )基牙及义齿整体加载时，各基牙应力分布规律与人工牙加载相同，但应力值增大； 3 )近中（牙合）支托设计使基牙受力更趋于轴向。
Methods : this experiment used finite element analysis ( fen ) in the design of mesial and distal occlusal rest of distal - extension partial removable denture and to test the magnitude of stress and displacement of abutment teeth and soft tissue under the base when under the vertical force of two conditions 方法：采用有限元法在末端游离缺损义齿的有限元模型上作远中、近中（牙合）支托设计，分别在人工牙及修复后的牙列（包括义齿及基牙）上作垂直向加载，测试基牙及基托下软组织的位移及应力值，通过测试结果作对比分析。
