Teeth have a black spot may be pigmentation, caries, dental fluorosis, etc., need to take other treatments, medication, surgical treatment for the cause. 1. Hyperpigmentation: If there are black spots on the surface of the teeth caused by melanin deposits, you need to take ultrasonic scaling, cold light teeth whitening and other ways to improve the situation of black teeth. 2. Caries: If there is a black spot on the teeth caused by caries, patients can also take inlay restoration, amalgam filling, composite resin direct bonding restoration and other ways of treatment. 3. Dental Fluorosis: For teeth with dark spots caused by dental fluorosis, the dark spots on the teeth can be removed by acid-etching coatings, grinding, etc. In addition, in-office restorations can also be done. In addition, teeth can be whitened with in-office bleaching or at-home bleaching. A dark spot on the tooth can also be the result of tetracycline, enamel hypoplasia, and more. It is recommended that patients seek medical attention, and the doctor will choose targeted measures to treat the black spot based on its cause.