Unilateral fusion of mandibular permanent lateral incisor with canine: A report of a rare case
A 16-year-old male patient was referred to the Department of Orthodontics, Kırıkkale University School of Dentistry, Kırıkkale, Turkey, for the treatment of his teeth.\nThe patient appeared healthy and of normal physical development for his age. The patient's medical history was unremarkable. His temporomandibular joints were normal. There was no reported history of orofacial trauma. The patient in this report also did not give a history of its occurrence in any member of his family. His parents had no hereditary peculiarities and his mother did not use any medication and was not exposed to radiation or trauma during pregnancy.\nOral examination revealed he had a moderate level of oral hygiene and mild gingivitis of the gums. No other soft tissue abnormalities were found. Intraoral examination revealed a presence of unusually large teeth in the right lower incisor canine region confirming that it was a case of fusion and not gemination. On the labial and lingual aspect a developmental groove separating the crown of the fused tooth and extending into the gingival sulcus was seen [Figures and ]. Percussion showed no sensitivity or pain, and neither did warm or cold testing. The electrical pulp-vitality test showed no stimulated pulp state or necrosis when compared with neighboring teeth. No mobility was seen in either tooth. All other teeth did not show any developmental abnormalities. Radiographic evaluation of the mandibular right side revealed fused 42 and 43 with a single root and root canal.\nBased on both clinical and radiographic findings, the fusion was diagnosed between mandibular right lateral incisor and canine with one root and one pulp canal [].