Chances of Relapse?

Alright, so, strangely, the only scary part of all this for me is the chance of relapse. I should have asked my surgeon this. It seems like I have a new question for him everyday. I don't mind going through all this, it was my choice, and I'm not really nervous, I'm actually excited. What I don't want though is to go through all this and then have it not work. What are the odds? Does anyone know? Has this happened to you or someone you know? Also, I can't afford to go through it again, or my parents can't. They are paying out of pocket for this surgery because it is an exclusion on our insurance plan. They don't even consider these kind of surgeries....no matter how much you need it. This means my parents are paying 50 thousand dollars for all of this to go down. They rock. I don't want to go into my surgery with any fears though. I'm the kind of person that thinks a positive attitude and outlook will carry me a long way. I don't want any bad energy in the room the day of. I want to feel calm.

Relapse just seems like such a funny thing to me. I mean, how is this possible really? They are putting screws in my mouth to hold my new jaw in place, so how in the world could I revert back to my old bite? They said the bone would grow over where they are sliding it....but what if it doesn't? Is this when relapse happens? All I know is that I will not be straining my jaw in the slightest, even if I have to be mute! I don't want to take the chances.