There is no definite time frame for how long it takes for an inflamed wisdom tooth to heal. Because there are mild and severe conditions, mild inflammation of individual wisdom teeth may be significantly relieved within a week as the patient’s immunity changes. However, there are some relatively severe cases of pericoronitis, which cause swelling and infection in the corresponding space, and it is important to intervene in a specialized dentistry department. Without intervention there is a risk that the condition will gradually worsen and in severe cases cause bacteremia or even sepsis, which can be life-threatening. In general, interventions for this kind of pericoronitis include local irrigation and systemic medication. For local irrigation, it is generally recommended to apply hydrogen peroxide in combination with saline, alternating with irrigation of the blind pocket around the wisdom tooth. The systemic medication we can generally consider the application of cephalosporins and nitroimidazoles, cephalosporins can be commonly applied to cefuroxime, cefadroxil, nitroimidazoles can be commonly considered to apply metronidazole, tinidazole and so on.