There are many clinical people who have localized single tooth irregularities, and there are several treatment methods as follows: 1, restorative treatment: grinding the uneven teeth smaller, putting crowns on them, and keeping the crowns and the teeth next to them as flush as possible, can change the state of this uneven tooth. The disadvantage is that you may have to lose your own dental tissues, and this loss is irreversible; 2, traditional orthodontic treatment: wear steel braces or wear clear braces to align the crowded teeth into the entire dental arch; 3, fragmentary arch technology: wear braces on two or three teeth in front of and behind the crowded teeth to align the crowded teeth into the normal dental arch; 4, the arch technology: wear braces on two or three teeth in front of and behind the crowded teeth to align the crowded teeth into the normal dental arch. This can solve the problem of one partial tooth misalignment.