The black color on the outside of the tooth after filling is generally abnormal.
1. Teeth after filling generally do not appear outside black symptoms, teeth outside black may be related to the filling of bad habits, such as long-term smoking, tea, coffee, eating food with high pigment content may lead to outside black symptoms.
2. The black color on the outside of the tooth after filling may also be caused by pathological factors, such as secondary caries, due to tooth decay, the outside of the black symptoms may occur.
Usually need to pay more attention to oral hygiene, regular medical review, but also need to pay attention to diet, eat less pigmented food, but also need to be diligent in brushing, rinse, to prevent caries.