The darkening of teeth is mostly considered to be caused by dietary influences, inadequate oral cleaning, dental caries, dental calculus and other reasons.
1. Dietary influences: if long-term intake of melanin food, excessive smoking, drinking coffee and other melanin deposition in the tooth surface, thus appearing between the teeth of the black situation.
2. Oral cleaning is not in place: If you regularly do not brush your teeth or oral cleaning is not in place, resulting in long-term food residues in the mouth, easy to blacken the gap between the teeth.
3. Dental caries: If you eat too much sugar to cause residue in the teeth fermentation produces acid, breeding bacteria, resulting in the destruction of the hard tissues of the teeth, thus appearing between the teeth of the black situation.
4. Calculus: If the ingested drinks or food residues remain in the gingival sulcus for a long time, causing bacteria to gather and form plaque, and the internal mineralization gradually forms a stone-like substance, there will be a blackened gap between the teeth.
Black teeth may also be caused by other reasons, if there are symptoms of dental discomfort, it is recommended to go to the hospital in time for examination and treatment.