Background: Tooth fusion involving supernumerary teeth is an uncommon developmental dental anomaly, particularly in the permanent dentition. It may present as an esthetic and functional concern, often requiring interdisciplinary management. Early diagnosis and a tailored treatment plan are essential to preserve oral health and achieve satisfactory cosmetic outcomes. Case description: A 9-year-old male presented with an esthetic complaint due to an abnormally shaped maxillary right central incisor. Clinical and radiographic evaluation revealed fusion of a supernumerary tooth with the permanent central incisor, accompanied by palatal displacement of the right lateral incisor. A multidisciplinary treatment plan was executed, including endodontic therapy, surgical hemisection, autotransplantation of the lateral incisor, and reimplantation of the hemisectioned central incisor. Regenerative aids including platelet-rich fibrin (PRF) and platelet-rich plasma (PRP) were used. Esthetic rehabilitation was completed with a three-unit anterior fixed prosthesis. Conclusion: Fusion involving supernumerary teeth presents a diagnostic and therapeutic challenge in pediatric patients. A multidisciplinary approach combining endodontics, surgery, regenerative therapy, and prosthetic rehabilitation can lead to successful functional and esthetic outcomes.