Top surgery really isn't that bad. I had it done under a local with a really nice Dr. My Dr. put Jackson-Pratt drains in, one per side, but even that didn't hurt to change. Most Dr.s will give a set of instructions as to what activities you can and can't do. I wouldn't think that brushing your teeth would be a problem.
Kind of off the subject, but you will feel so much better emotionally right after the surgery and both emotionally and physically in the long run. The first surgery can be a little nerve wracking, but its not as bad as you'd think.
Sam1234