Pulp necrosis as the name suggests the pulp of the tooth is dead and insensible. Therefore, root canal treatment for this type of tooth is definitely not painful. In fact, many patients will be very afraid of the drill that the doctor picks up, for fear that the drill will hurt. In fact, experienced doctors, as long as the tooth has been judged to be pulp necrosis, will certainly tell you not to be nervous, certainly not painful. Unless some people may judge that the pulp is not completely necrotic, there may be some partial necrosis, i.e., the surface may be necrotic, but the deeper part may still be alive. This category will definitely hurt a little bit without anesthetics, and once the pain is detected, you will definitely go for other methods, such as removing the pulp directly with anesthetics. There is another method, for example, if it is found that there is still a part of the inside that is still viable, it will be treated with nerve deactivating, i.e., nerve rotting medication, first, so that after it is completely necrotic and painless, then the nerve will be treated, and there will be no more pain. Therefore, the most important thing in dentistry is painless treatment, we do not have to be afraid of going to the dentist will be very painful, in fact, the doctor has a very good idea in mind, the tooth to see if it will not be painful, and under what circumstances what measures will be taken to reduce the pain to the lowest possible range.