The inside of the teeth have plaque, usually black or brown manifestation, attached to the neck of the teeth or the jaw surface, easy to form caries or dental calculus over time.
Suggestions:
To remove plaque, the best way is cleaning, also called scaling, the use of ultrasonic scaler to remove calculus and plaque, you can go to the oral periodontology department for treatment, the formation of plaque can not be completely avoided, so it is recommended that regular oral examination, regular scaling. Wish you good health!