The third molar, also known as wisdom tooth, obstructed tooth, is the most late eruption of all permanent teeth, usually starts to erupt around 18 years old, due to the late eruption time, the gingival texture above the tooth is tougher, in the eruption of soft tissue resistance or the tooth growth direction is not correctly positioned, can cause soft tissue inflammation around the crown, mainly manifested as congestion, swelling, fever, pain, periodontal pockets, overflowing pus, etc., clinically If the infection invades the pharyngeal isthmus and masticatory muscles, it can also cause chewing, eating, swallowing difficulties and restricted mouth opening. Treatment is divided into local treatment and systemic treatment: local treatment, daily available 1% to 3% hydrogen peroxide solution and saline or other sterilization solution to do periodontal pocket rinse, and then locally coated with iodine glycerin to control bacterial growth, you can use gold gardenia gingival rinse, Listerine mouthwash, such as rinse after meals, several times a day; systemic treatment, according to the patient’s specific condition of the choice of antibacterial drugs or clear heat and detoxification of Chinese medicine for Systemic treatment, according to the patient’s specific condition, the use of antibacterial drugs or clearing heat and detoxifying Chinese medicine for treatment, such as Huang Lian Shang Qing Tablets, Yuan Hu Pain Relief Tablets, artificial metronidazole tablets, etc. (specific consultation with the pharmacist use). During the treatment period, do not eat stimulating food, drink more water, pay attention to rest, do not stay up late, and strengthen exercise to enhance immunity. In most cases, wisdom teeth cannot erupt normally and are blocked, which is the hidden danger of inducing pericoronitis, periodontal disease and caries. It is recommended to go to the dental hospital in time after wisdom teeth erupt to evaluate whether they need to be extracted.