There are also appliances to help correct minor imperfections.
- Tooth aligner: This is a type of retainer, which is worn at nighttime. However, the retainer can move teeth since it is made from a mold where the teeth have been reset to a more ideal position.
- Simpli5: This treatment involves a short series of five (or less) clear aligners to correct minor crowding or spacing. Each aligner is worn for about six weeks.