多生牙导致下颌侧切牙迟萌及尖牙含牙囊肿阻生1例报告并文献复习

Delayed eruption of maxillary lateral incisor and dentigerous cyst of impacted canine caused by supernumerary tooth in one case and a review of literature

多生牙也称额外牙，是一种牙齿数目的发育异常，可发生于牙弓的任何部位，其中以上颌前牙区多见，发生在下颌前牙区的比例只占约2％。