This article reports the treatment of a maxillary central incisor, which appeared to be a fused tooth with two separate immature roots. After hemisection, the mesial part of the tooth was removed and the remaining part was treated by a direct pulp capping with a flowable dentin-bonded composite. The central diastema was closed orthodontically. Follow-up after six and eighteen months revealed a healthy pulp and an undisturbed root formation. Finally, a review of the literature on the aetiology and treatment of fused teeth is presented.