[Methods for the evaluation of abnormalities of the bony chin with a view toward surgical correction].

The bony chin is not placed in its position by chance. As with the other skeletal pieces of the face, it is controlled by the major laws of craniofacial morphologic and functional equilibrium. Clinical evaluation of anomalies of position of the bony chin in the three spatial planes is not sufficiently precise, and craniofacial structural and architectural analysis is an essential aid for determining origin of the mental dystopia and surgical remedial means. The aim of the latter is to restore the bony chin to its position of craniofacial equilibrium, the only way to obtain a stable functional result.