On July 2010 I had molds made for a nance appliance and separators. The mold stuff wasn't so bad except my mouth felt so full I felt like I was choking but it was over pretty fast. The separators...those are evil, tiny little rubber bands, they look very innocent but they hurt so much and when you eat they just keep digging into your gums...hate them. Luckily I only had them for a week at the time first week so they could put the metal bands to do the mold then again later in the month for another week before they put the nance in.
The nance is okay, it's made specially for my mouth so it doesn't feel umcomfortable but whenever I eat something creamy I like to rub it against the roof of my mouth and now I can't :-(
The purpose of the nance is to keep my first molars where they are because I had my second bicuspids removed to make space to get the crowding at the front straightened out.
The buccal tubes hurt so much when you eat at first because they dig into my gums and I thought separators were bad also they rub against the inside of my lips and cheek but wax is my friend and after a couple of days my skin is tough enough to handle it.
I took acetaminophen tablets for the first two days because the pain was to uncomfortable.
Foods: You won't be able to eat properly, it hurts too much. For the two days I recommend nothing solid, stick to pudding, yogurt, creamy soups, mashed potaoes etc,. After that you can try pasta, soft breads, muffins, fish and other soft, tender meats. On day 5 I was completely back to normal but I still won't bite anything, I cut up food into small pieces because I don't want anything to break or come loose.
Another side-effect has been cold sores. They happen sometimes when there has been "trauma" around the mouth. I got one three weeks after my wisdom teeth were removed and now a week after I got my full braces I'm getting another one. I've used several things to treat cold sores but the thing that has worked the best by far is hand sanitizer, it dries it up so fast.