Tooth swelling and pain, there are several possibilities such as wisdom tooth pericoronitis, periapical periodontitis, and periodontitis, as follows: 1. Wisdom tooth pericoronitis: Nowadays, many people have insufficient wisdom tooth eruption position, so it leads to ectopic growth, blockage, and ambulation of wisdom teeth, which will eventually form wisdom tooth pericoronitis. In the acute stage of wisdom tooth pericoronitis, it will lead to swelling and pain of wisdom tooth and its surrounding soft tissues, and in serious cases, it will lead to pus accumulation. 2. Periapicalitis: In most cases, periapicalitis is caused by dental nerve damage caused by dental caries and forms pulpitis, and further development of pulpitis may lead to infection and penetration of decayed pulp tissue into the periapical tissue of the tooth, forming periapicalitis, causing tooth 3.Periodontitis: The acute period of periodontitis with pus may lead to swelling, pus and pain of periodontal tissue of teeth.