Clear alignment through the use of clear aligners such as Invisalign is suitable for patients who have mild to moderately crowded teeth. They are made with clear hard plastic and are favored by some people because they are hard to detect and so offer some cosmetic advantages over ordinary braces. Other reasons why people go for this option rather than braces is the fact that you can remove them when you need to eat and put them back on when you are done.
Dentists might recommend these if they determine that the amount of correction needed is minimal and can typically be corrected with these devices. More severe cases of misaligned teeth are treated differently. Clear alignment and Invisalign are good for patients who are very conscious about their appearances and who would not like to wear traditional braces.