Tsurumachi T, Kuno T
Department of Endodontics, Division of Advanced Dental Treatment, Nihon University School of Dentistry, Tokyo, Japan.
Int Endod J. 2003 Feb;36(2):135-42. doi: 10.1046/j.1365-2591.2003.00635.x.
To describe combined endodontic and orthodontic treatment of a maxillary lateral incisor fused with a supernumerary.
A rare case is presented in which combined endodontic and orthodontic treatment was performed on a cross-bite fused tooth. Clinical and radiographic examination showed the maxillary lateral incisor fused with a supernumerary and an impacted canine. The fused tooth required nonsurgical and surgical endodontic treatment for functional and aesthetic reasons. The root canals were dressed with calcium hydroxide for 2 months before they were obturated with thermoplasticized injectable gutta-percha. Then, the distal part of the fused tooth was removed and the mesial part of the tooth was replanted and fixed. Three months after the completion of orthodontic therapy, the impacted canine erupted between the remaining tooth and the first premolar. Recall examination, 3 years after completion of root canal treatment, showed clinical and radiographic evidence of healing.
Fusion has been described as a development anomaly characterized by the union of two adjacent teeth. Proper combined endodontic and orthodontic treatment resulted in maintaining one tooth half and solving the aesthetic and functional problem of a fused tooth.
描述对上颌侧切牙与多生牙融合病例进行牙髓治疗与正畸治疗相结合的情况。
本文介绍了一例罕见病例，对一颗反合融合牙进行了牙髓治疗与正畸治疗相结合的治疗。临床和影像学检查显示上颌侧切牙与一颗多生牙及一颗埋伏尖牙融合。由于功能和美观原因，融合牙需要进行非手术和手术牙髓治疗。根管先用氢氧化钙封药2个月，然后用热塑注射型牙胶进行充填。接着，切除融合牙的远中部分，将牙的近中部分再植并固定。正畸治疗完成3个月后，埋伏尖牙在剩余牙齿与第一前磨牙之间萌出。根管治疗完成3年后的复查显示，临床和影像学检查均有愈合迹象。
融合被描述为一种发育异常，其特征为两颗相邻牙齿融合。恰当的牙髓治疗与正畸治疗相结合可保留半颗牙齿，并解决融合牙的美观和功能问题。
