This is dental caries, commonly known as tooth decay, which is a bacterial infectious disease caused by bad eating habits and unclean oral hygiene. It is suggested to go to the hospital stomatology department to open pulp drainage, apply medicine, and then fill teeth, which can still function normally.

In addition, we should develop good eating habits and pay more attention to the cleanliness of oral hygiene. For example, after eating sugar and snacks, rinse with water; Brush your teeth in the morning and evening, remember to brush carefully; Eat more crude fiber and coarse grains ... and of course go to the hospital for oral care regularly.