Wisdom tooth extraction does not usually lead to acute pulpitis. Acute pulpitis in the neighboring teeth, i.e. the second molar, may develop from caries, and the inflammation can be controlled by root canal treatment, followed by crown restoration, as described below. Obstructed wisdom teeth may cause food impaction between the wisdom tooth and the second molar, leading to caries in the second molar, or it may be caused by poor daily cleaning, etc., which gradually develops into acute pulpitis. The treatment is root canal therapy, which involves root canal preparation, cleaning and shaping of the root canals, followed by disinfection of the canals with medication and tight filling of the canals with root filling material. Acute pulpitis in the second molar is often accompanied by dental defects, which can be restored to restore the shape and function of the tooth with a dental crown. It is recommended to go to a regular medical institution to receive professional treatment.