V-line
V-line surgery allows for reduction the chin to a more slender and oval shape without increasing its length. The surgery also reduces the overly strong bone flanking each side of the chin, thus transforming the more masculine U shape to a sharper and more feminine V shape.
The chin line is excised into a smooth line. The chin end can be brought together without touch of the nerve. The protruding parts in both sides of the mandible are excised.
The narrowed chin end produces the wholly oval V-line face type.

About
Risks and complications
Complications may include hematoma (a collection of blood under the skin that must be removed by the surgeon), infection, asymmetry and reactions to the anesthesia. You can reduce your risks by closely following your surgeon’s instructions before and after surgery.
Care after surgery
You will be told to keep your head elevated and as still as possible for a couple of days after surgery to help minimize swelling. Avoid alcohol, steam baths, and saunas for several months. Above all, get plenty of rest and allow your body to spend its energy on healing.
Preparation prior to surgery