Will sliding genioplasty help with "low" lips? (Photo)

The sliding genioplasty is indicated in your case and it will not affect the size or position of your lips. In severely recessed cases, some patients activate their chin muscle in order to bring their lips together. This is called lip incompetence. This is improved in these cases and allows the patient to create a natural seal without activating their mentalis muscle. I think you will achieve a beautiful and balanced result with your surgery.

A sliding genioplasty is usually performed by an oral surgeon under general anesthesia in a hospital with an overnight stay. It is usually performed when the teeth are significantly out of alignment. Placement of a chin implant is done for purely cosmetic purposes and is performed under local anesthesia which takes approx 30 minutes, with a lot faster recovery

A sliding genioplasty usually has no positive and or negative impact on the lower lip position when standard horizontal movements are done. (such as what you need) It absolutely will have no effect on the upper lip. While a subnasal lip lift can rotate up the upper lip, there is no such effective operation to change the downward tilt of the lower lip.