Mentonoplastia is a surgical method of modeling the form or the volume of the chin.

There are two ways:
- The resection and the removal of the excess of  bony material in  case of prominent chins.
- The augmentation(the enlargement) of little chins through the application and fixation of the silicone implant

Through these methods can be solved the esthetical complexes of the pacients related to hipoprognatism or hiperprognatism.