You won't need surgery. And I would know, since I had all of my teeth root canaled, among other things. What you're gong for withh mostly consist of a few x-rays, jabbing at your teeth to make sure none are weak, and then being fitting for a mouth guard.
When you get fittied for it, the only part you have to worry about is the end. No matter how much it feels like its going to suck your teeth out of your jaw as they remove it, it won't. Doesn't hurt but its a very strange sensation. Only lasts a couple minutes though, and then its like it was never there.