Why do you wear retainers after orthodontics? Which do you usually choose?

The principle of orthodontics is to realize the movement of teeth in alveolar bone through the external force of appliance. After this external orthodontic force makes the teeth move in the alveolar bone, the periodontal ligament will have a certain memory function, because the existence of periodontal ligament makes it possible to correct the teeth. But periodontal ligament is one of the causes of recurrence. Because of the strong memory function of periodontal ligament and everyone's own genetic problems, teeth will return to the original trend, so it is necessary to wear retainers after orthodontics. By wearing retainer, periodontal ligament can form new periodontal memory, and correction can achieve long-term stable effect.

There are three kinds of retainers, namely Harley retainer, lingual retainer and membrane retainer, among which membrane retainer is widely used.

Film pressing gripper, also known as transparent gripper, is a kind of movable gripper. Its advantage lies in its beauty and meets the needs of beauty lovers. Transparent retainer needs to be cleaned carefully, otherwise it will lead to dental caries, oral odor and other problems. At present, invisible retainers, invisible braces Invisalign, Zhengya and Times Angel all belong to head brands, but only Zhengya provides extra retainers and invisible braces during orthodontic restart for free, so Zhengya transparent retainers are widely used in the market.