Black color in the socket may be pigmentation, which can be removed by scaling, or it may be caused by fluorosis, caries, etc., which should be removed by other treatments, surgical treatments, medications, etc. for the cause. 1. Hyperpigmentation: If you have the habit of drinking coffee or strong tea for a long time, and do not clean your mouth in time after eating, it may lead to black pigmentation in the tooth socket. At this time, you can remove the dirt attached to the surface of the teeth through ultrasonic scaling. 2. Dental fluorosis: If there is black color in the tooth socket caused by dental fluorosis, you can apply whitening gel on the surface of the teeth, and then decolorize the surface of the teeth under cold light irradiation. In addition, dental molds containing bleaching gel can be worn on top of the teeth. In addition, patients can also take composite resin restoration treatment. 3. Caries: For the black color of the fissure caused by caries, it is necessary to take composite resin direct bonding restoration, amalgam filling, inlay restoration treatment as prescribed by the doctor. The black grooves may also be caused by tetracycline teeth, enamel hypoplasia, and so on. It is recommended that patients with black teeth grooves need to consult a doctor in a timely manner and follow the doctor’s instructions for treatment.