Hypoglossia congenita.

Hypoglossia and aglossia are rare congenital malformations, especially when found as isolated abnormalities. In view of their usual association with other anomalies of the face, oral cavity, and distal extremities, an accurate investigation is required. We describe a 2-year-old girl with isolated hypoglossia and severe dental disease. Clinical understanding of the changes in the mechanisms of oral suction, mastication, swallowing, and speech, as well as the existing dental occlusion, requires a multidisciplinary team approach so that a more effective treatment can be administered.