It can be removed and worn by oneself and does not affect eating and exercise; it can correct teeth and is mainly suitable for mild to moderate dental deformities. Generally, the face shape will not be changed. Pay attention to keeping your mouth clean and avoid the sequelae of gum recession caused by dental correction. If the correction is not done well, gum recession, looseness, and widening of the gaps between teeth will occur, so corrections must be made with caution.