Tanaka M, Motokawa W, Hayashida H, Ogami T, Yoshida Y
Shoni Shikagaku Zasshi. 1989;27(3):672-7.
A case is presented of a six-year-six-month-old boy with three impacted supernumerary teeth in the premaxillary region. The radiographic examination showed one mesiodens resorbing the root of the left primary central incisor and two inverted supernumerary teeth, also displacement of the unerupted permanent central incisors. Surgical treatment was performed to remove these supernumerary teeth. The forms of the mesiodens exhibited tubercularly shaped crown with four-conical cusp and two inverted supernumerary teeth showed a conicalshaped crown with incomplete root. According to the family history, a sibling had a supernumerary tooth in the same region which had been extracted in the past.
本文报告一例6岁6个月大的男孩,其前上颌区域有三颗埋伏多生牙。影像学检查显示一颗正中牙吸收了左侧乳中切牙的牙根,两颗倒置多生牙,以及未萌出的恒中切牙移位。进行了手术治疗以拔除这些多生牙。正中牙的形态表现为冠部呈结节状,有四个锥形牙尖,两颗倒置多生牙的冠部呈锥形,牙根不完全。根据家族史,其一名兄弟姐妹在同一区域曾有一颗多生牙,已在过去拔除。