Toothpaste and baking soda have certain effect on brushing teeth, but the effect is not obvious. It is not the most suitable and long-term method to whiten teeth, nor is it suitable for long-term use. Baking soda, the scientific name of sodium bicarbonate, is a fine white crystal, which is weakly alkaline after being dissolved in water. It can be used as starter and tooth whitening agent in food production. When you brush your teeth with baking soda, you need to go to the store or supermarket to buy edible baking soda powder. It should be noted that baking soda must be eaten, and the ratio of soda to water is about 3 1. Just stir it into a paste.

Using baking soda can remove pigments and soft substances attached to enamel surface, such as smoke scale and tea scale. Baking soda is enough to brush your teeth once a day, and it is not recommended to use it every day. There is another way to brush your teeth: baking soda and salt. Salt is what we often use, and edible salt will do. The most common kind in supermarkets is baking soda mixed with salt, mixed with a little water, not too thin, and then applied to teeth. After stopping for a minute, gently brush them off with a toothbrush. Sticking to it for a while will have an effect.

And lemon juice to brush your teeth. Lemon juice is rich in vitamins and has a strengthening effect on teeth. Lemon juice is acidic and has a strong cleaning ability, which can remove bacteria in the mouth and achieve the effect of whitening teeth. But if these methods work wonders, there will be no toothpaste, so they are effective, but the effect is not obvious, and Xiao Su's brushing is not suitable for long-term use.

Why baking soda is not a long-term way to whiten teeth? Because baking soda can't be used much. If you brush your teeth with alkaline substances for a long time, it will also corrode the teeth themselves and may also lead to tooth wear. Therefore, it is recommended that you don't brush your teeth with baking soda for a long time.

If you want to whiten your teeth, you must brush your teeth every morning and evening, use regular toothpaste with whitening effect, and go to regular hospital dental and oral clinics to check your teeth. Doctors will do cold light whitening, cleaning and polishing.