Teeth with black spots are mainly caused by caries or hyperpigmentation, it is recommended to consult a doctor for caries filling or dental cleaning.
1. Dental caries: mainly caused by bacterial loss of dental hard tissue, bacterial decomposition of food debris will secrete a large number of acidic substances, resulting in acid erosion of the teeth appear defective, i.e., the formation of caries; bacteria will also secrete melanin and other substances, so that the caries damage stained with black spots, caries filling treatment must be carried out to clean up the decayed part of the defect after the restoration of removing the black spots.
2. Pigmentation: when oral hygiene is poor and melanin-producing bacteria are active in the oral cavity, melanin will make the surface of the teeth stained, i.e. black spots; dental ultrasonic cleaning, sandblasting and other treatments are required to remove black spots.