V line surgery changes your jawline and chin so they appear more contoured and narrow. It helps improve the facial profile by slimming down the lower jaw. This procedure is suitable for those with a double chin, square jaw, and bloated cheeks.
Double jaw surgery is a procedure that corrects jaw abnormalities. It can involve your upper jaw (maxilla), lower jaw (mandible), or both upper and lower jaws.
So, V line surgery is not the same as double jaw surgery. They are two different procedures that serve different purposes.