a receding chinthen we talk about retrogeny. In this case, the chin must be moved forward.
a protruding chin, on parle de progénieThe chin is too far forward and must be moved back. The chin is too far forward and must therefore be moved back.
a menton trop haut, donnant un effet de visage trop court “short face”, il faudra donc abaisser le menton
a menton trop bas, donnant ici un effet de visage trop long “long face”, où il faudra remonter le menton
a asymmetrical chin to be refocused
The chin surgery is performed under local or general anesthesia, on an outpatient basis or with an overnight stay in the hospital, and lasts from half an hour to an hour and a half.