In 2004, I had a sudden sharp pain while doing it, but unfortunately I met a quack. I spent 1, 000 yuan to make two braces. The pain in the process is beyond words. In less than a year, I had another sudden sharp pain in my braces. I went to the nearby Deyang Stomatological Hospital (Deyang Third People's Hospital), and a director surnamed Jiang (a female doctor in her late sixties with a provincial accent) made me braces again (it was as good as before (gargling with toothpaste after every meal). At present, she is no longer in the stomatological hospital. It is reported that she has a dental clinic near the Zhong Er Club.

My experience may be helpful to you. You have to ask this person yourself to find it.