Black color between teeth is considered to be food debris, no need to take special treatment, but also considered to be caused by hyperpigmentation, caries, calculus, etc., the patient needs to consult a doctor to remove it in a professional way. 1. Food debris: When food debris is trapped between the teeth, it can be manifested as black color between the teeth. Usually, it can be removed by flossing or brushing or rinsing, and no special treatment is needed. 2. Hyperpigmentation: For those who have black color between their teeth due to long term consumption of coffee, strong tea, etc., they can seek medical attention to remove the black color between their teeth through ultrasonic scaling, sandblasting, and so on. 3. Caries: If the caries is clear, the caries can be controlled with fluoride, silver ammonium fluoride and other drugs as prescribed by the doctor, and if the caries is serious, the caries can be treated with resin filling, inlay restoration and other surgical treatments, so as to remove the black lines between the teeth. Some patients can also cooperate with doctors to carry out remineralization therapy, fissure sealing treatment. 4. Dental calculus: clear dental calculus caused by black between the teeth, you can seek medical treatment through the gingival scaling, subgingival scraping and other ways to eliminate. Before treatment, it is important to check the contraindications to prevent accidents. It is recommended that people with black teeth should consult a doctor for examination, and follow the doctor’s instructions after clarifying the disease. Daily attention to oral care, diligent brushing, rinsing, learn to take the correct way of brushing and so on.