The middle gap of the incisors is blackened and should be replenished as soon as possible. 1. The middle gap of the incisors is decayed black, that is, clinically speaking, dental caries, need to go to the hospital as soon as possible to clean up, black out the place in time to replenish, if not timely clean up and replenish, the place that is decayed will be bigger and bigger, the damage to the teeth will be more and more serious, so you need to go to the regular hospital as soon as possible to fill the teeth for treatment. 2. need to go to the hospital in time, with a dental drill to remove the decay of necrotic tissues within the drive after the material for filling, if the filling area is large, you also need to wear a crown for local protection. The middle gap between the incisors decayed black, need to go to the regular hospital as soon as possible for examination and treatment, and usually pay attention to oral hygiene, brushing and rinsing on time, eat less sweets.