Whether wisdom teeth need to be extracted when they develop cavities depends on the location of the wisdom teeth. 1. Do not need to be removed: If the position of the wisdom teeth is relatively positive, and is not prone to pericoronitis, and the wisdom teeth have a pair of teeth, can bite well, will not affect the function of the bite. And the mouth opening degree is relatively good, can cooperate with the operation of the case. This kind of wisdom tooth decay can generally remove the inside of the decayed tissue, and then fill the wisdom tooth decay with filling materials, generally do not need to be extracted. 2. Need to be extracted: If the wisdom tooth position grows relatively partial, not in the center, and there is no opposite jaw teeth, or wisdom teeth always appear wisdom tooth pericoronitis. This affects the normal function of the bite, this situation can be considered for extraction. Wisdom teeth have cavities, it is recommended to go to the dentist in time, under the doctor’s identification to clarify whether it is necessary to pull out, or need to fill the tooth treatment.