Result: the three-dimensional models of the first maxillary molar residual root restored with post-core crown were generated.
结果：建立了上颌第一磨牙残根桩核冠的三维有限元模型。
Methods Four different load patterns were added to the three-dimensional finite element model of the maxillary first molar established.
方法采用已建立的上颌第一磨牙三维有限元模型。使用四种不同负荷方式对模型进行加载。
Results of 64 cracked teeth, 28 appeared in maxillary first molar.
结果在64颗隐裂牙中，有28颗发生于上颌第一磨牙。
Objective To observe the stress distribution of maxillary first molar and its periodontium in lingual orthodontics.
目的采用有限元的方法研究舌侧矫治过程中上颌第一磨牙牙根、牙周膜、牙槽骨应力分布的特点。
Objective To study the shape and location of root canal orifice in maxillary first permanent molar and provide a morphological basis for locating canal orifice in endodontic therapy.
目的研究上颌第一磨牙根管口形态和位置关系，为根管治疗时寻找根管口提供解剖学依据。
Objective to study the anatomical factors of vertical root fractures (VRFs) on vital pulp of maxillary first molar.
目的分析活髓下颌第一磨牙根纵裂的解剖学病因。
Objective to study the anatomical factors of vertical root fractures (VRFs) on vital pulp of maxillary first molar.
目的分析活髓下颌第一磨牙根纵裂的解剖学病因。
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