[1] Rajab LD, Hamdan MA.Supernumerary teeth:review of the literature and a survey of 152 cases[J]. Paediatr Dent, 2002, 12(4):244-254.[2] Foley J. Surgical removal of supernumerary teeth and the fate of incisor eruption [J]. Eur J Paediatr Dent, 2004,5 (1):35-40.[3] 赵继刚.多生牙及其继发性牙合畸形的发生规律与影像诊断[J].国外医学口腔医学分册,2004,31(5):405-407.[4] Leyland L, Batra P,Wong F, et al. A retrospective evaluation of the eruption of impacted permanent incisors after extraction of supernumerary teeth[J]. Clin Pediatr Dent,2006,30(3):225-231.[5] Idris FQ. Supernumerary tooth: report of a rare case of a fourth mandibular molar [J]. Rev Clín Pesq Odontol,2009,5(2):157-160.