What is the definition of prognathism?

Prognathism refers specifically to the projection of the lower jaw (mandible) or the upper jaw (maxilla) beyond the normal alignment in relation to the rest of the facial structure, which can significantly impact dental alignment and occlusion. When one of these jaws is projected forward, it can cause issues with how the teeth fit together when the mouth is closed, resulting in misalignment of the teeth. This condition is often noticeable in profiles, where the jawline's positioning can be more pronounced.

Understanding prognathism is essential in fields such as orthodontics and dentistry, as it plays a crucial role in determining treatment options for correcting bite issues and improving oral function. Other options present conditions or symptoms that may be related to dental health but do not define prognathism itself.