When a patient has a receding chin it is called retro prognathism and prognathism when it is excessively prominent.
When there is a receding chin, it is commonplace to find a droopy lower lip because of the lack of bone development.
In those cases, we normally use the implant of a solid silicone prosthesis or it is refilled with fat, previously treated for infiltration (llipofilling), from the same patient. It can be performed under local anaesthetics and the patient can return home on the same day of the procedure.
The placement of the silicone implant is performed through a small incision in the mucosa, or in the skin below the chin. It is carried out under local anaesthetics and on an outpatient basis. It may cause temporary alterations in the lip sensitivity and mobility.
When there is prognathism, an osteotomy (a resection of a bone fragment) is carried out.