Teeth black without holes if the examination for hidden caries also need to be filled, but if only for the outside world of the pigment or tartar attached to the black then need to carry out periodontal treatment. 1. Hidden caries: teeth black without holes may be deep in the fossa caries, or caries is not easy to find, generally use specialized instruments to grind off the outer layer of enamel can be found after most of the dentin has been caries, need to remove the decayed material as soon as possible after filling, to prevent caries from continuing to develop. 2. External substances attached to the tooth surface: teeth black without dental defects may also be due to the diet of pigmented food or teeth attached to the surface of the tartar caused by the need for effective brushing to clean the pigmentation or periodontal treatment to remove tartar, pigmentation. Teeth black without dental tissue loss whether the need for dental fillings to the hospital to check whether the caries, if the caries need to be filled.