Hello. After you straighten your teeth. It is necessary to remove the braces and then grind the teeth as retainers to fix the position of the teeth. It takes three or four days to take it down as a retainer. And these days. As long as you don't eat some coarse grains and hard things that need to be chewed hard. It won't rebound at all.

Because the newly corrected teeth will only move slowly under the normal physical external force. It's like a doctor putting braces on you and moving your teeth slowly by external force.

Because of the external force of correcting teeth, it takes a long month to move to the predetermined position, not just a few days. Well, you move so fast, will it take so long to correct your teeth?

What's more, you are just eating and chewing food now. There is no great physical force, three or four days. You don't have to worry at all.

You are only thirteen years old. The belt rack won't last that long. More than one and a half years and less than two years will do. If it is an adult, the time will be longer. The retainer should be worn every day. I carried it 24 hours a day the year before last, and only took it off when I was eating and gargling. Take at least 12 hours every day for the rest of the time (you can take it when you sleep at night). I hope I can help you!