Wisdom teeth that hurt when you bite them may have pulpitis or pericoronitis, which requires root canal treatment or local anti-inflammatory treatment and consideration of extraction. 1. Pulpitis. Wisdom teeth are located at the end of the tooth row, it is often difficult to clean and tooth decay, triggering pulpitis, can appear to the outside world of hot and cold stimulation of severe pain, do not dare to bite up and down to eat and drink, generally for the preservation of the value of the tooth, you can take the root canal treatment. 2. Wisdom tooth pericoronitis. Wisdom teeth can be blocked wisdom teeth pericoronitis, the surrounding gums red, swollen and bleeding can be higher than the surface of the crown, the upper and lower bite can have pain, general saline rinse gum pockets after povidone-iodine medication, to be considered after the inflammation has turned into a chronic phase of extraction. Wisdom teeth pain when biting is recommended to see a doctor as soon as possible to avoid the spread of inflammation, affecting the work life.