Any plastic surgery performed on the protruding part at the bottom of the face: After the auto accident, it was necessary that Jody have mentoplasty or surgery to repair her damaged jaw bone.

A chin implant made with a small incision (surgical cut) inside the mouth, between the lower lip and the gum, or in a small crease under the jaw: Augmentation mentoplasties are made from semisolid, spongelike, or mesh synthetic materials.

Surgical cuts that are made under the jaw with an instrument like a dental drill which is used to take off excess bony tissue from the chin: Dr. Green told Cedric that he had to have an operation called a reduction mentoplasty so the abnormal protrusions of material at the bottom of his face could be removed.