Black in the middle of the incisors may be caries or pigmentation, it is recommended to fill or sandblasting treatment. 1. Dental caries: when the middle of the incisor is black, it may be the anastomosis caries between two neighboring surfaces, and the black surface is rough, and in serious cases, there is soreness when the probe enters, so it is recommended to remove the decayed tissues and carry out the filling treatment. 2. Pigmentation: some patients like to eat chocolate, coffee and other colored food, or smoking and other bad habits, resulting in the deposition of some black plaque on the surface of the teeth, affecting the aesthetics, inspection can be seen on the surface of the teeth smooth. These sandblasting treatment can be removed, it is recommended to use the regular way of brushing to maintain oral hygiene. It is recommended that patients with discomfort go to a regular hospital stomatology department as soon as possible to consult, so as not to delay the condition.