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单词 Orthodontic retainers
释义

Orthodontic retainers

英语百科

Retainer (orthodontics)

Top (left) and bottom (right) retainers
Vacuum form retainer in the foreground (used on upper); illustration of an early Hawley retainer in the background
The underneath surface of an upper Wrap Around Hawley retainer resting on top of a retainer case
Zendura Dental Appliance Material with Thermoformed Clear Retainers.

Orthodontic retainers are custom-made devices, usually made of wires or clear plastic, that hold teeth in position after surgery or any method of realigning teeth. They are most often used before or after dental braces to keep teeth in position while assisting the adjustment of the surrounding gums to changes in the bone. Most patients are required to wear their retainer(s) every night at first, with many also being directed to wear them during the day – at least initially. There are four types of retainers typically prescribed by orthodontists and dentists: Hawley, Essix, Zendura, and Bonded (Fixed) retainers.

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