上颌尖牙区和下颌前磨牙区多生牙：恒牙列期1例
Multiple supernumerary teeth in the maxillary canine and mandibular premolar regions: a case in the postpermanent dentition.
作者信息
Sasaki Hidekazu, Funao Junko, Morinaga Hideki, Nakano Kazuhiko, Ooshima Takashi
机构信息
Department of Paediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan.
出版信息
Int J Paediatr Dent. 2007 Jul;17(4):304-8. doi: 10.1111/j.1365-263X.2006.00791.x.
BACKGROUND
A supernumerary tooth is an extra tooth above the normal number, of which approximately 90% occur in the premaxillary region and show rudimentary forms of crown morphology. Most cases occur singly, with bilateral occurrence in the maxillary canine regions very rare in children with no other associated diseases or syndromes.
CASE REPORT
A case of a 14-year-old boy with bilateral supernumerary teeth with normal crown shapes in both the maxillary canine and mandibular premolar regions. The supernumerary teeth in the maxilla were diagnosed at 12.2 years of age and in the mandible at 14.1 years of age.
CONCLUSION
Four supernumerary teeth in the maxillary and mandibular canine-premolar region is a rare finding.
背景
多生牙是指数量超过正常的额外牙齿，其中约90%发生在前上颌区域，并呈现出牙冠形态的原始形式。大多数病例为单发，在无其他相关疾病或综合征的儿童中，上颌尖牙区双侧出现多生牙的情况非常罕见。
病例报告
一名14岁男孩，上颌尖牙区和下颌前磨牙区均出现双侧多生牙，牙冠形态正常。上颌多生牙在12.2岁时被诊断出来，下颌多生牙在14.1岁时被诊断出来。
结论
上颌和下颌尖牙-前磨牙区出现四颗多生牙是一种罕见的情况。
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