Dark teeth do not necessarily need to be filled because there are many different ways to darken teeth. If there is pigmentation on the tooth surface, such as the patient often drinks strong coffee, smokes, drinks strong tea, cola and other colored drinks, these pigments will attach to the tooth surface. It does not need to be repaired, but only requires periodontal treatment in the dental department of a regular hospital, or in the periodontal department of a large hospital, which means that the pigment attached to the tooth surface is removed by scaling, using an ultrasonic scaler. If the jaw surface or the adjacent surface of the tooth is blackened, it may need to be repaired, and it is necessary to go to the stomatology department of the regular hospital or the endodontics department of the large hospital, and the doctor will conduct clinical examination combined with the root tip film to see whether the cavity has been formed in the sulcus and point gap. If the cavity is formed, the decayed and necrotic tissues in the cavity should be removed and then filled with filling material. If the whole tooth is blackened, there is also a possibility that the pulp is necrotic, so it is necessary to go to the endodontics or stomatology department for examination. If the pulp is indeed necrotic, root canal treatment is required.