Yes.
Baking soda itself is an alkaline substance, because if you use alkaline things to brush your teeth for a long time, then it will also produce a corrosive effect on the teeth themselves, so we suggest that you do not use it for a long time, or else it will be damaging to your mouth and teeth. Can not be used for a long time, and whitening teeth to rely on daily protection, in addition to morning and evening brushing, often rinse mouth.
The reason why the teeth become yellow:
Not pay attention to oral hygiene, no morning and evening serious brushing habits, the surface of the teeth to accumulate a layer of food debris, soft tartar, tartar, tobacco stains, tea stains, coffee stains and so on. These "pigmented teeth" is not the teeth itself yellow, is not pay attention to oral hygiene caused by.
People born around the 70s, due to tetracycline drugs used as anti-inflammatory drugs, so many people have a mouthful of black and yellow teeth, commonly known as tetracycline teeth. Many are now aware that tetracyclines can lead to yellow teeth, especially when taken by children who are more affected.
Expanded:
Methods and precautions for brushing with baking soda:
Baking soda and toothpaste are used together, and a little bit of it is sprinkled on top of the toothpaste when you brush your teeth. But brushing teeth with this substance mixed with baking soda and toothpaste can only be used once a day, because baking soda is alkaline, using more will damage the teeth, do not use alone. When brushing your teeth every day, the right amount of baking soda with a little salt works well.
Brushing is not white, the reason why white is because of brushing in addition to tartar on the surface of the teeth, pigmentation and other visual effects. Baking soda brushing is to take advantage of this cleaning effect, and make the teeth white. Peanuts can also whiten teeth, in fact, in the process of eating peanuts is a process of cleaning teeth.
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