I happen to be a braces person, and different braces people need different correction methods. I corrected it twice and used two braces. At different times, it took me more than three years to correct it. You mean braces, right? For the first few hours, I just felt a little tight and uncomfortable, but it didn't hurt. However, after a while, the pain will be unbearable and I can't eat anything. I got through those days by drinking milk, but as long as I got through the first few days, I always stuck things on my braces and gargled frequently.