There are some endodontic teeth that are asymptomatic, and some patients do not notice that they have grown this tooth. In addition, there are some patients who experience recurrent pain or swelling. The gums will slowly recede during the eruption process, and if food impaction or prolonged swelling occurs without complete recession of the gums, this is a case of abscess, redness and swelling of the gums. Because there is a blind pocket between the gum and the tooth, it can be rinsed in time, generally using hydrogen peroxide and saline alternately, and using anti-inflammatory drugs appropriately, commonly used topical drugs are iodoglycerin or minocycline hydrochloride; oral drugs routinely use cephalosporin, amoxicillin or roxithromycin, together with metronidazole tablets or tinidazole tablets. If swelling occurs repeatedly, it is recommended that the tooth should be extracted promptly.