Objective. Fusion is a dental anomaly that arises through the union of two adjacent teeth. The case report presents multidisciplinary management of a fused maxillary anterior tooth. Case Report. A 10-year-old boy was referred to the pediatric dental clinic with the chief complaint of a large upper anterior tooth. Intraoral and radiographic examinations indicated fusion between the permanent maxillary right central incisor and a supernumerary tooth. According to the treatment plan, the fused tooth was sectioned, and the mesial portion was removed. The remaining tooth section was restored with composite resin, and the diastema between the central incisors was closed with orthodontic treatment. After an 18-month followup period, the tooth showed no sign of pathosis. Conclusion. The technique described here offers a simple and effective method for restoring a fused tooth that reestablishes function, shape, and esthetics. 1. Introduction Tooth fusion is a rare developmental anomaly that stems from the embryogenic union of two teeth originating from two or more tooth germs [1, 2]. Although the exact etiology of fusion is unclear, pressure or physical force producing close contact between two developing tooth buds has been reported as a possible cause, and trauma, genetic and environmental factors have also been implicated as contributing factors [3–6]. Moreover, fused teeth may form part of syndromes such as achondrodysplasia, chondroectodermal dysplasia, focal dermal hypoplasia, and osteopetrosis [7–11]. The literature suggests fusion has a higher incidence in deciduous dentition (0.5%–2.5%) than in permanent dentition (0.1%–1.0%) [7, 12, 13]. Fused teeth are found predominantly in the anterior region, with incisors and canines the most frequently affected [14, 15]. These anomalies may be bilateral or unilateral [14, 16]. The incidence of fusion does not vary by sex [7, 12]. Fused teeth may occur in both the maxilla and mandible, but they are more frequently present in the mandible [17]. The majority of fused teeth show an anomalous broad crown and two distinct root canals. Clinically, the crowns appear melded together, with a small groove between the mesial and distal parts. Fused teeth may be characterized by one pulp chamber divided into two root canals, two independent endodontic systems, or one common pulp canal [5, 15, 18]. This case report presents the surgical separation and orthodontic treatment of a maxillary central incisor fused with a supernumerary tooth. 2. Case Report A 10-year-old boy was referred to the paediatric dental clinic with the
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