Dental caries, or tooth decay, can be treated with fillings, root canals, and medication. If the pain is severe, it is recommended to consult a doctor as soon as possible. 1. Root canal treatment: Root canal treatment is needed if the degree of caries is serious and there is already pulpitis. If pulpitis or periapical inflammation is present, the patient will experience persistent toothache, nighttime toothache and other symptoms. The pain is more severe, it is recommended to seek medical attention as soon as possible. 2. Medication: When the child’s pain symptoms are obvious, parents can follow the doctor’s instructions to give the child oral pain medication, such as ibuprofen extended-release capsules. Children due to dental caries caused by dental pain need to go to the hospital as soon as possible to avoid aggravation of the pain. Usually should pay attention to eat less sweets, brush teeth on time.