Mentoplasty is chin surgery. The chin can be altered in two ways: either it is underdeveloped (retrognathism), or on the contrary it is overdeveloped (prognathism).
The otorhinolaryngologist is more involved in correcting retrognathism, subcutaneously placing silicone prostheses that will give a greater volume to the site.
Plastic surgery also has the ability to correct this deformity using fat grafts.