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  • Title: Endodontic and orthodontic treatment of a cross-bite fused maxillary lateral incisor.
    Author: Tsurumachi T, Kuno T.
    Journal: Int Endod J; 2003 Feb; 36(2):135-42. PubMed ID: 12657157.
    Abstract:
    AIM: To describe combined endodontic and orthodontic treatment of a maxillary lateral incisor fused with a supernumerary. SUMMARY: 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. KEY LEARNING POINTS: 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.
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