Hallermann-Streiff syndrome patient treated with removable prosthesis: a clinical report.

Hallermann-Streiff syndrome is a rare congenital disorder characterized by bird-like facies and dental anomalies. A description of a 21-year-old Hispanic woman with Hallermann-Streiff syndrome, whose anterior open occlusal relationship and smile were improved with overdentures is presented. The treatment was satisfactory in terms of both esthetics and phonetics, excluding the need for aggressive surgical treatment.