Worm eating teeth is what we call caries, according to the degree of caries, you can use drug treatment, filling treatment and other methods. 1. medication: early enamel caries did not appear dental hard tissue destruction, only for the surface of the tooth yellow-brown and white-brown spots, you can use fluoride toothpaste or 75% sodium fluoride glycerin local rub prevention, to stop the continued development of caries. 2. Filling treatment: shallow caries that destroys enamel or medium caries that destroys to the superficial layer of dentin needs to be cleaned of carious tissues and filled with resin; deep caries that destroys to the deep layer of dentin removes the decayed material and is filled with calcium hydroxide after cushioning. When dental caries occurs, you need to consult a doctor in time, under the guidance of the doctor for examination and treatment, and pay attention to oral hygiene, brush your teeth after each meal, use dental floss to remove plaque, and protect your teeth.