Patients with wisdom tooth pericoronitis do not necessarily have to be extracted, as follows: 1, do not need to be extracted: if the wisdom tooth exists to (dentition) teeth, the tooth position is normal, no bone tissue around the formation of resistance, only the crown is covered by soft tissue, prone to pericoronitis, you can apply iodophor disinfection under local anesthesia to remove the hyperplastic tissue, lifting the soft tissue resistance to help the wisdom tooth erupt smoothly, if the molar in front of the wisdom tooth is missing, you can Retain wisdom teeth, use orthodontic treatment, traction wisdom teeth to move to the missing tooth site, with the front teeth alignment after neat, exercise chewing function; 2, need to extract teeth: if wisdom teeth no pair (teeth together) teeth, often repeated infection caused by jaw facial swelling, temperature rise, etc., then need to extract wisdom teeth, if wisdom teeth body long, axis tilt, and neighboring teeth to form a triangular gap, cause dental crowding, etc., then must be extracted.