The exogenous coloring of teeth is mainly due to unclean brushing, the habit of smoking and drinking tea, black smoke stains, tea stains and tartar on the surface of teeth, which make teeth yellow and black. The methods of tooth whitening include ultrasonic scaling and tooth surface polishing. Smoke stains, tea stains and tartar on the tooth surface are cleaned by ultrasonic high-frequency vibration, and then the tooth surface is polished to make the tooth surface smooth, so as to restore the true colors of the teeth and achieve the effect of whitening the teeth.
Endogenous coloring of teeth is mainly found in patients with natural yellow teeth, aged yellow teeth, tetracycline teeth, dental fluorosis and dead teeth. The method of tooth whitening is to do cold light whitening. You can go to the hospital for cold light whitening treatment, or you can use a family whitening suit to whiten your teeth under the guidance of a doctor. 1, drink plenty of water, develop the good habit of gargling after meals and brushing your teeth in the morning and evening, and keep your teeth clean; 2. Eating some foods that whiten teeth and foods rich in fiber, such as celery, can clean teeth better. You can eat more fruits rich in vitamin C, such as oranges and kiwis. 3. Go to the Department of Stomatology for regular tooth cleaning for six months to one year to remove calculus, pigment and dental plaque, and the teeth can return to their original white color.