Prognathism is a descriptive term for a jaw (lower or upper) that protrudes forward beyond the plane of the face.
Review Date 1/24/2022
Updated by: Michael Kapner, DDS, General Dentistry, Norwalk Medical Center, Norwalk CT. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.