Some teenage friends have wisdom teeth is a standing thing teeth, especially uncomfortable, what is going on? Wisdom tooth pericoronitis often occurs in young people aged 18-25, is one of the common oral diseases. The main symptom is the painful swelling of the soft tissue around the crown, if the inflammation affects the chewing muscle, can cause varying degrees of mouth opening restrictions, such as the side of the pharynx will appear swallowing pain, resulting in the patient chewing to eat and swallowing difficulties, the condition of the heavy can also have general discomfort, headache, temperature rise, loss of appetite and other systemic symptoms. Etiology During the eruption of the third molar or when eruption is difficult, part of the crown is covered by the free gingival part, forming a blind (gingival pocket) between the crown and the gingival flap, and there are often food residues and bacteria in the blind pocket. This local condition makes it easy for bacteria to grow and multiply. Wisdom tooth pericoronitis can be triggered by cold, fatigue or other causes of decreased body resistance, or by local trauma (e.g., bite wounds to the jaw teeth) and other factors. The disease is most often seen in the third mandibular molar because it often lacks sufficient position for eruption and can form an obstruction. The most common clinical conditions of obstruction include proximal to mesial, horizontal and vertical obstruction. The main symptom of acute pericoronitis is painful swelling of the soft tissues around the crown of the tooth. If the inflammation affects the masticatory muscles, it may cause varying degrees of mouth opening restriction, and if it affects the pharyngeal side, it may cause painful swallowing, resulting in difficulty in chewing, eating and swallowing. In severe cases, there may be systemic symptoms such as discomfort, headache, increased body temperature, and loss of appetite. If acute pericoronitis is not treated thoroughly, it can become chronic and later recur, even leaving a fistula. If the inflammation continues to expand, various complications may occur as described below. For example, it may spread to the subperiosteum to form a subperiosteal abscess; or pus may flow forward along the lateral bony side of the mandible to form an abscess or gingival fistula on the buccal side of the equivalent of the first or second mandibular molar, or it may extend outward to form a subcutaneous abscess in the buccal area or penetrate the skin to form a skin fistula. Patients with buccal fistulas should be considered for the possibility of pericoronitis to prevent misdiagnosis. In severe cases, pericoronitis can be complicated by perimandibular cellulitis, mandibular osteomyelitis, or even systemic infection. The treatment of pericoronitis is to strengthen the resistance of the patient, control the infection and promote the dissipation of inflammation. The treatment of pericoronitis is to strengthen the resistance of the patient’s body, control the infection, and promote the dissipation of the inflammation. Go to a regular medical institution for local flushing and medication, systemic antibiotics, and warm saline or mouthwash with Shukatsu on weekdays, and after the acute period, surgical treatment (extraction) should be used to prevent recurrence.