Four fused incisors in the maxillary and mandibular primary dentitions

抄録

Bilateral dental fusion in the primary dentition is a dental anomaly. However, bilateral fusion of maxillary and mandibular primary central and lateral incisors is very rare. The fused teeth were considered to consist of the bilateral upper and lower primary central incisor and lateral incisor. The maxillary primary central and lateral incisors were joined both on the right and left sides of the arch. Bilateral occurrence of unusually large teeth in the lower incisor region was observed. Radiographically, the maxillary fused teeth were observed to have separate coronary parts. The pulp chambers were separate in case of the upper left fused teeth. The other 3 fused teeth were observed to have a single pulp chamber and root canal. The 4 fused teeth in this case did not include any supernumerary teeth.