1. Cleaning: Use equal parts of salt and soda, add appropriate amount of water, and brush your teeth like toothpaste. 1-2 times a week. Long-term use can whiten teeth.
2. Ultrasonic tooth cleaning: Tooth cleaning or ultrasonic cleaning can also be used to remove stains on the tooth surface, such as cigarette stains.
3. Porcelain veneering: If the teeth are yellow caused by tetracycline teeth or dental fluorosis, the above method has no obvious effect, and the method of tooth sticking should be adopted.
In addition to the above methods of whitening teeth, we should also pay attention to oral hygiene, brush your teeth every morning and evening and use the correct brushing posture, avoid drinking some dark drinks, such as strong tea and coffee, rinse your mouth in time to prevent your teeth from turning yellow after drinking, and consult a doctor on how to whiten your teeth.