Will a sliding genioplasty make my chin longer?

A genioplasty is a fairly versatile procedure. The chin segment can be moved all around. Moving the chin up would make your face appear shorter. I do not have any photos of you to give a better assessment, but I like to morph photos of patients to show what the anticipated outcome will be. That way we are on the same page about exactly what they are looking for. I recommend finding a surgeon who can do that for you, so you can discuss likes vs. dislikes to make sure they understand what your desired outcome is.

Augmentation of the chin should focus on correcting what is missing. Whether performed by means of sliding genioplasty or chin implant, augmentation can be achieved in all directions. In person consultation with a board certified plastic surgeon with good reputation in chin augmentation, is recommended. Good luck.

I would have to exam you to determine your options. In general, If pre-planned using a 3D CT and cutting guide, you can obtain the desired results within biological limits. A custom chin implant may also be an option.