① Master the correct method of brushing teeth. Usually we brush our teeth sideways, but we don't know that this will damage our teeth for a long time, and some things are not easy to remove. A more scientific method is to brush the upper teeth from top to bottom, and brush the lower teeth from bottom to top, which can effectively clean up all kinds of food residues in the teeth. Then brush the toothbrush and teeth vertically for a few times and brush the tip of the tongue at the same time. And try to avoid brushing your teeth, so as not to hurt your gums. Brush the innermost teeth on both sides of the mouth.

② Master the intensity of brushing your teeth. Many people brush their teeth too hard, which is easy to cause gum bleeding. This will damage the gums and teeth for a long time, so brush your teeth evenly and don't use too much force.

③ Choose a suitable toothbrush. At present, toothbrushes include filament soft brush, medium brush and hard brush. They have their own advantages and disadvantages, and we should choose them reasonably according to our personal dental conditions. For the sake of protecting the tooth surface, I suggest using a soft brush, which has less damage to the tooth surface. ④ Master reasonable brushing time. You can't brush your teeth twice, it takes about 3 minutes. It is best to brush your teeth about 3 minutes after meals.

⑤ Pay attention to the frequency of brushing teeth every day. The most reasonable frequency of brushing teeth is three times a day. If you can't, brush it at least twice a day.

⑥ Clean mouthwash cups and toothbrushes regularly. We only care about brushing our teeth every day. The mouthwash cups are often dirty and easy to breed bacteria, so we should clean them regularly. Every time the toothbrush finishes brushing its teeth, it should knock on the edge of the mouthwash cup and throw out the toothpaste inside the toothbrush bristles.

⑦ Choose the right toothpaste. Bite toothpaste with your teeth. If you think toothpaste contains granular things, it is good toothpaste.