Tooth decay is very simple, need professional doctor to check, if it is general caries, no matter it is superficial caries or deep caries, it is not necessary to pull out. If you have toothache because of tooth decay, you can remove the infected pulp nerve through root canal treatment, disinfect and rinse the root canal, and then choose the suitable material to fill the tooth. If the tooth is so decayed that there is no value to keep, it can be extracted. The process of tooth extraction is to disinfect the gums of the tooth to be extracted, give an anesthetic injection, and use an extraction forceps to hold the tooth to be extracted when the anesthetic takes effect, move it from side to side to separate and loosen the tooth from the gums, and pull it out by force. It may also be possible to pull out the tooth with the root at one time, perhaps leaving a residual root, it will be necessary to clean out all the remaining residual roots with a dental jaw, and the recovery should be carried out strictly according to the doctor’s instructions after the extraction.