Today the surgeon assigned to me here in Canada showed me my possible surgical outcome using software like this example below.
It's not just to give you a cosmetic hypothesis but is actually used to plan the surgery (so it might be different from the program below but it looked similar). So for example, he could tell that part of my jaw would be asymmetrical when advanced and that it would lead to unwanted changes (basically there was no solution for that according to him).
I can tell you it was a horrifying experience. First, being able to see your head and face in 3-D like that is quite traumatizing because you see what you sort of look like for the first time without literally embodying your own face/head. I guess unless you're a model, it's a disappointing and scary thing to see.
But I think I'd recommend it because it really can give you a better sense of what this surgery will and won't do for you and also you can try and ask more specifically if certain types of changes are actually possible. It was really stressful though.
Anyone else had this done? If you have or are going to I'd be interested to know your experience.
3D Orthognathic Surgery Planning