First of all, I think there are many reasons for the failure of orthodontics. If the whole tooth fails, resulting in fewer teeth and loose teeth, you should go to the hospital with braces and seek professional help.

If the tooth looseness is serious, it belongs to moderate looseness. At the same time of treating periodontal disease, it is necessary to ligate and fix the loose tooth and the healthy tooth next to it so as not to aggravate the condition. If it is a slight tooth loosening, generally take some anti-inflammatory drugs. As long as the inflammation is cured, the loose teeth will recover on their own.