上颌第三磨牙(maxillary third molar)形态、大小、位置变异最多,具有如下特点: 1、该牙标准形态与上颌第二磨牙相似,但牙冠较小,根较短,各轴面中1/3较圆突,颊舌面外形高点均在中1/3处。 2、牙冠颊面自近中向远中至舌侧的倾斜度更大,远中舌尖很小或缺如,颊面宽于舌面,牙合面呈圆三角形,副沟多。有时牙尖多而界限不清。 3、牙根的数目和形态变异很大,多数牙合并成一锥形根。
...Buccal surface Lingual surface Mesial surface Diatal surface Occlusal surface Root 上颌第三磨牙(Maxillary Third Molar)1) 牙冠 形态, 大小, 位置变 化大。似第二磨牙, 但合面副沟多 ,尖嵴不清楚。
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... partial molar volume 释义:偏克分子容量 upper third molar 释义:上颌第三磨牙 lower third molar 释义:下颌第三磨牙 ...
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上颌第三磨牙拔除术 the upper third molar extraction
上颌第三磨牙和上颌尖牙分别是第二及第三常见的部位。
The maxillary third molars and maxillary canines are the second and third most common areas of occurrence, respectively.
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;
The main fact to influence the types of roots of Maxillary third molar was the largest circumference of crown, not the types of cusps.
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。
A wisdom tooth is in humans any of the usually four third molars, including mandibular third molar and maxillary third molar.
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