'Triplication' defect in deciduous teeth: an unusual odontogenic anomaly.

Developmental odontogenic anomalies can occur in primary as well as in permanent dentition leading to morphological variations in shape, size and structure and numerical variations such as hypodontia. The most commonly reported odontogenic anomaly in primary dentition is conjoined teeth. Conjoined teeth can be due to fusion or gemination. Relevant clinical and radiographic evaluation is a must to differentiate between the two. Occurrence of double fusion as an anomaly may not be infrequent, but triple fusion is a rare odontogenic anomaly. We report a case of a 7.5-year-old girl who clinically had a large crown due to triple fusion in her dentition, between two normal primary teeth and a supernumerary tooth. This paper gives a brief insight into the incidence, associated quandaries and diagnosis and treatment modalities of a triple fusion. 2015 BMJ Publishing Group Ltd.