额外的第四和第五磨牙：两例报告。
Supernumerary fourth and fifth molars: a report of two cases.
作者信息
Kokten Gulseren, Balcioglu Huseyin, Buyukertan Mete
机构信息
Department of Anatomy in the Faculty of Dentistry at Istanbul University, Istanbul, Turkey.
出版信息
J Contemp Dent Pract. 2003 Nov 15;4(4):67-76.
Panoramic radiographs of two female patients ages 22 and 21 revealed the presence of two impacted bilateral upper fourth molars and unilateral (right) upper fourth and fifth molars. All of the teeth were distomolars. The supernumerary teeth had normal tooth morphology with regard to their crowns and roots but were slightly smaller than the existing third molars. Their crowns were either two or three tuberculated and they all had single roots.
两名年龄分别为22岁和21岁女性患者的全景X线片显示，存在两颗双侧上颌第四磨牙阻生以及单侧（右侧）上颌第四和第五磨牙阻生。所有这些牙齿均为远中磨牙。额外牙的冠部和根部具有正常的牙齿形态，但比现有的第三磨牙略小。它们的冠部有两个或三个结节，并且都有单根。
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