Plastic surgery requires braces. Under normal circumstances, the teeth are crowded, especially the front teeth. The traditional orthodontic method is to fix and adjust the position of teeth with braces. However, it is undeniable that the traditional orthodontic appliance, that is, braces, is to stick a small iron piece called a bracket to the teeth and tie the orthodontic arch wire to move the teeth to achieve the purpose of correction. However, because there are many orthodontic devices on the teeth, it gives people a feeling of "Kouga with an iron mouth".

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