Conclution More mesially inclined maxillary molars are likely to be associated with third molar eruption.
结论第三磨牙萌出与上颌第一、第二磨牙较大的近中倾斜有关。
Most of which happened in mesiobuccal canal of maxillary molar and mesial canal of mandibular molar, accounting for 70.7%.
器械折断于上磨牙近颊根管和下磨牙近中根管者居多，占70.7%。器械折断在根管中下段多见，占70%。
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。
Objective: To evaluate the clinical applications and therapeutic effect of maxillary sinus floor lifting and dental implantation in the patients of maxillary molar missing.
目的：探讨上颌窦提升术在上颌磨牙缺失种植修复术中应用及疗效情况。
Results: The more distance of maxillary molar and more obvious inhibition of maxilla bone growth forward in group of 7~8 year old children were detected than those in group of 10~11 year old children.
结果：发现7～8岁组患儿上磨牙远移的距离大于10～11岁组的患儿，7～ 8岁组患儿上颌骨向前生长所受抑制较10～ 11岁组明显，7～ 8岁组患儿替牙期选用口外弓的治疗效果较10～ 11岁组为好。
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。
A wisdom tooth is in humans any of the usually four third molars, including mandibular third molar and maxillary third molar.
人类的智齿就是第三大臼齿，通常有四颗，包括下颌第三磨牙和上颌第三磨牙。
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。
Methods: Maxillofacial ct scan and secondary reconstruction were performed in the diagnosis of patients who needed to estimate the relation between maxillary sinus and molar.
方法：对上颌牙齿拔除、种植牙、肿瘤等需要显示上颌窦与上颌后牙区关系的患者，进行颌面专用CT扫描和重建成像。
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。
The main fact to influence the types of roots of Maxillary third molar was the largest circumference of crown, not the types of cusps.
影响上颌第三磨牙牙根型的主要因素是牙冠最大周径，而不是牙尖型；
Objective: the three-dimensional finite element method models of the maxillary second molar was constructed.
目的：建立人上颌第二磨牙三维有限元模型。
The inter-canine, inter-molar and alveolar widths were measured and the differences between maxillary and mandible width calculated.
测量两组尖牙牙弓宽度、磨牙牙弓宽度及磨牙牙槽弓宽度，并计算上、下颌对应的牙弓、牙槽弓宽度差。
The inter-canine, inter-molar and alveolar widths were measured and the differences between maxillary and mandible width calculated.
测量两组尖牙牙弓宽度、磨牙牙弓宽度及磨牙牙槽弓宽度，并计算上、下颌对应的牙弓、牙槽弓宽度差。
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