It is normal. It's been worn for four or five months. I just wore it for a month. I can't get used to eating toothache. I will get used to it. Then in the first five days after the monthly follow-up, the teeth will feel a little sour, which will only last for a week at most. Except for a few days after the monthly visit, the teeth are not strong, and the rest of the time are bone crab shells.

Now my teeth are slowly shifting a little, and my teeth itch all day. . I want to wear mine for two years. I am looking forward to it. . .