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Concrescence is a condition of teeth where the cementum overlying the roots of at least two teeth join together. It usually involves only two teeth. The most commonly involved teeth are upper second and third molars. The prevalence rate is 0.04%.


This condition arises as the result of traumatic injury or overcrowding of teeth. True concrescence occurs during root formation phase, whereas acquired concrescence occurs after the radicular phase of development is complete.


It is difficult to diagnose clinically. Radiographs taken at different angles can aid detection of concrescence. Histological examination for extracted teeth could confirm diagnosis.


If the condition is not affecting patient, no treatment is needed. Concrescence teeth could be reshaped and replaced with full crowns. However, if the teeth are having recurrent problems, non-restorable or pain, extraction should be considered.