What are the disadvantages of traditional orthodontics?

Hello, the traditional orthodontic appliance is to stick a small iron piece called a bracket to the teeth and tie the orthodontic arch wire to make the teeth move, so as to achieve the purpose of orthodontic correction. However, because there are many orthodontic devices on the teeth, it gives people a feeling of "Kouga with an iron mouth". At the same time, if the oral hygiene is not well maintained, it may cause oral injuries such as gum inflammation, tooth demineralization and discoloration.