The time needed to reduce the swelling of acute wisdom tooth pericoronitis is related to the severity of the inflammation and the degree of swelling, and may take 2~3 days, a week or more. 1. Wisdom teeth inflammation, swelling is slight: generally choose local rinsing medicine, follow the doctor’s instructions oral amoxicillin capsules and metronidazole. In the last two weeks, eat a light diet, avoid staying up late, and rinse your mouth with light salt water after meals. Generally 2-3 days of medication, the inflammation will be significantly improved. 2. Wisdom teeth swelling and pus overflow: abscess incision and drainage, daily local rinsing and medication, with intravenous infusion of antibiotics, such as penicillin, metronidazole injection or tinidazole injection, general inflammation is relieved about a week or even longer. Acute pericoronitis, timely to the hospital stomatology department, is conducive to the recovery of the condition.