Over 30 years old milk teeth stagnant periodontal swelling and pain is recommended to go to the regular hospital for consultation, according to the specific situation, under the doctor’s advice for orthodontics, extraction and other ways to deal with. 1. Orthodontics: If you go to the hospital to take dental radiographs and find that there are permanent teeth underneath the milk teeth, in this case, you can be treated by orthodontics, through orthodontics to pull the late permanent teeth to the normal position. 2. Extraction: If the replacement permanent teeth can be pulled, then the milk teeth can be extracted, and then wear the bracket to carry on the treatment; if it is impossible to pull, in this case, it is necessary to keep the milk teeth, and pull out the permanent teeth, to prevent the emergence of dental cysts. If the periodontal swelling and pain occurs after the stagnant milk teeth in the age of 30, you should go to the regular dental hospital in time, and try not to eat spicy and stimulating food during the treatment period, so as not to lead to the aggravation of the symptoms.