Orthodontic correction should be performed when teeth are uneven or crowded, when there are large gaps and when teeth are protruding. Straightening teeth is a longer process and takes longer, usually around two years. Orthodontic correction of teeth also needs to be done at the right age, the best age for orthodontic correction is around 14 years old, minors can easily straighten their teeth and there is no rebound phenomenon. Orthodontic treatment generally takes two years, a shorter period of time can not effectively correct the deformity, after premature removal of the aligners, the teeth will return to the original state, resulting in orthodontic failure. Orthodontics is a longer process, can not be rushed, must be implemented according to medical advice, wear braces for not less than two years, not arbitrarily removed to prevent orthodontic failure. After wearing braces should also pay attention to care, to maintain oral and brace hygiene; with orthodontic appliances, should also pay attention to eating habits, do not eat solid food and spicy stimulating food, should eat some softer food, pay attention to brush and rinse after meals. Orthodontic braces wear time is very important, directly affects the success of orthodontics, after wearing should also pay attention to care.