Tibetan monks have healthy and white teeth old age. In fact, the ancient Tibetan monks, although they have never heard of a dentist, have managed to have healthy and white teeth.
Here is his secret
Put a tablespoon coarse salt in half a glass of water, boiled and cooled. With a spoon, stir vigorously for one minute, then remove the foam that has formed.
Grip crystals with your toothbrush and brush your teeth with this mixture in the usual way, after each meal. Brush your teeth with salt water from the cup. This way your teeth will become very white. It will also be able to strengthen the gums and get a beautiful, healthy, pink color.
You may feel some discomfort at first due to the sensitivity of the teeth to cold, hot and sour-sweet. This sensitivity is due to the enamel thins slightly.
Such a feeling can win expensive teeth toothpaste for sensitive teeth. But you will have to abstain because the salt paste will not only kill pathogenic bacteria in the mouth, but also will strengthen the tooth enamel very soon, or cement cracks and bumps on your teeth.