Dental fusion: A report of 2 cases

Fusion can be described as the complete or partial union between the dentin and enamel of two or more developing teeth. This union could be seen in the primary or permanent dentition or between a permanent tooth and a supernumerary tooth. Various theories have been put forward to explain the aetiology of fusion including that of increased force generated during growth, use of thalidomide or viral infection during pregnancy and a genetic aetiology. Fusion may cause aesthetic problems, occlusal disturbances, increased tendency for dental caries and periodontal disease. Developmental anomalies such as fusion are not observed frequently in clinical practice. Morphologic alterations of teeth can be observed as an incidental finding during thorough clinical examination. This case report discusses 2 such cases of fusion along with review of literature.