A clinical report of nonsyndromic concomitant hypo-hyperdontia.

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Although hypodontia and supernumerary teeth are often considered as mutually exclusive conditions , this case report presents an unusual case of hypodontia and a supernumerary tooth occurring simultaneously . An adolescent male was referred to the local hospital department regarding upper arch crowding . Plain film radiographs confirmed the congenital absence of both lower lateral incisors in addition to an unerupted conical supernumerary tooth in the maxillary midline . This condition has been called hypo-hyperdontia and in this paper , we discuss the clinical findings and treatment planning considerations in relation to the limited number of previously reported cases . The case report raises awareness of concomitant hypo-hyperdontia and serves to highlight that concomitant anomalies should be excluded when hypodontia or supernumerary teeth are diagnosed .