Wisdom teeth rot a hole but not painful, this situation shows that the caries formed by caries is not very deep, has not involved the nerve of the wisdom teeth. Wisdom teeth on the cavity is caries-causing bacteria on the hard tissue of the tooth to produce a kind of damage, if it is relatively shallow caries, because it has not touched the pulp and nerve, and most of the initial period will not be accompanied by a number of complications, so there is no pain manifestation for the time being. However, pain may occur in the later stage, because with the further development of dental caries, the cavity deepens and the dentin is exposed, which can be due to food blockage, hot and cold food stimulation of the dentin and pain manifestations. If induced pulpitis will also appear obvious throbbing pain, persistent toothache and other more serious symptoms of toothache. It is recommended that after the discovery of wisdom teeth with cavities, although there is no pain temporarily, but also to go to the hospital stomatology department for examination, to follow the advice of a professional physician, timely and appropriate treatment.