Generally speaking, front and middle caries can still be repaired with fillings, but when deep caries reach the stage, root canal treatment is often required.

Shallow caries stage: There are black lines on the occlusal surface of the teeth, which are common in large teeth. This indicates that tooth decay has begun. The enamel is damaged by bacterial caries, but it is not painful or itchy. Pit and fissure caries will occur and the teeth must be filled in time. It’s not about cleaning your teeth;

Medium caries stage: small black holes appear on the teeth, indicating moderate tooth decay. Bacterial erosion has reached the dentin, accompanied by tooth sensitivity. The black decaying material is actually the product of bacteria. At this time The tooth can also be filled;

Deep caries stage: More than half of the tooth is rotten, indicating severe tooth decay. Bacteria have damaged the pulp and nerve, and are accompanied by severe pain. Dental neuropathy requires root canal treatment at this time. Treat and save scarred teeth.

The above and the basis for judging whether tooth decay requires root canal treatment, but the specific situation still depends on the doctor’s examination and judgment.