Concomitant hypo-hyperdontia: report of two cases.

Concomitant hypo-hyperdontia is a rare condition of coexisting missing teeth and supernumerary teeth in the same subject. Its etiology is still not exactly known. Permanent dentition is usually affected. Presented here are two uncommon cases of bimaxillary concomitant hypo-hyperdontia during the mixed dentition period. Early diagnosis of the condition and multidisciplinary approach for management of such cases is recommended.