Ghijselings Ellen, van Gastel Jan, Verdonck An, Carels Carine
Department or Oral Health Sciences - Orthodontics, KU Leuven & Dentistry, Belgium.
Aust Orthod J. 2014 Nov;30(2):221-9.
Fusion is defined as the union between dentine and/or enamel of two normally separated teeth. Gemination is the cleavage of the forming dental germ to produce two partial teeth. The distinction between the conditions is often determined by the number of teeth present. However, this can be confused if supernumerary teeth are considered.
The present case report describes the treatment of a patient who presented with dental fusion and macrodontia involving both upper central incisors. Besides the central incisors displaying characteristics of macrodonts, tooth 21 also showed aspects of fusion.
Management consisted of the extraction of 11 and 21 and orthodontic mesialisation of the maxillary dentition. Treatment was planned in two phases and at the end of the orthodontic phase, the upper anterior teeth were to be reshaped using composite resin.
Orthodontic space closure is a treatment option in the clinical management of an extracted maxillary central double and/or macrodontic tooth. As no permanent teeth were absent, it was presumed that the fusion of 21 occurred with a supernumerary tooth.
Multidisciplinary treatment following the extraction of maxillary central incisors is reported with special attention to the orthodontic and restorative considerations required to improve the aesthetic outcome.
融合是指两颗正常分离的牙齿的牙本质和/或牙釉质融合在一起。双生牙是指正在发育的牙胚分裂形成两颗部分牙齿。通常根据牙齿数量来区分这两种情况。然而,如果考虑到多生牙,情况可能会混淆。
本病例报告描述了一名患有上颌中切牙融合和巨牙症的患者的治疗情况。除了中切牙表现出巨牙的特征外,21号牙还显示出融合的迹象。
治疗包括拔除11号和21号牙,并对上颌牙列进行正畸近中移动。治疗分两个阶段进行,在正畸阶段结束时,使用复合树脂对上颌前牙进行重塑。
正畸关闭间隙是拔除上颌中双牙和/或巨牙后临床管理中的一种治疗选择。由于没有恒牙缺失,推测21号牙的融合是与一颗多生牙发生的。
报告了拔除上颌中切牙后的多学科治疗,特别关注改善美学效果所需的正畸和修复考虑因素。