Toothbrush toothpaste how to choose? 1, choose toothbrush: brush head should not be too large, the bristles are best soft and fine quality nylon wire (good resilience, poor water absorption, easy to dry, wear resistance), the top of the bristles should be selected to wear hair, oval, brush handle should be easy to grasp, too thin and too short are not suitable. If the above four conditions are met, it can be called a “health care toothbrush”. 2, choose toothpaste: fluoride toothpaste is preferred. Because the right amount of fluoride can reduce the solubility of tooth enamel (commonly known as enamel), enhance the structural strength of tooth enamel crystal, enhance the hardness of teeth, promote the remineralization of lightly demineralized tooth enamel, which can play a role in preventing dental caries. However, if the human body consumes too much fluoride, it will have adverse effects on health. For this reason, it is recommended that children under 3 years old should use fluoride toothpaste with caution, and children between 4 and 6 years old should use it under the guidance of adults, and the amount of fluoride toothpaste should not be too much, each time the amount is about the size of a soybean. The purpose of brushing is to remove plaque, soft tartar, food debris and pigmentation, to keep the mouth clean, and to massage the gums to improve periodontal health. There are many ways to brush your teeth, and no matter which method, all sides of your teeth should be brushed. At present, we advocate more “horizontal short distance chattering brushing method” (i.e. Bass method). This brushing method allows the bristles to reach into the gingival sulcus and the adjacent surface of the teeth, aiming at the area where plaque is most likely to adhere, and then short-distance horizontal chattering can effectively remove plaque. People who brush their teeth with the “Bass method” should pay attention to the following key points: place the bristles at the junction of teeth and gums, at an angle of 45 degrees to the tooth surface, and gently shake horizontally, then brush up and down along the teeth, not missing everything; brush the inside of the upper and lower front teeth with the upper end of the bristles, and brush the biting surface of the teeth back and forth; finally, don’t forget to brush your tongue to make your breath Don’t forget to brush your tongue to make your breath fresher. It is recommended to brush your teeth twice a day, 10 times per part (5 times back and forth), and the brushing time varies from person to person, but generally should not be less than 3 minutes. Correct brushing steps: 1. Brush the outer surface of the teeth first. Brush the bristles of the toothbrush with the surface of the teeth at 45 degrees, put it diagonally and press it lightly at the junction of the teeth and gums, gently make a small arc back and forth, brush the upper row of teeth downward and the lower row of teeth upward, pay attention to lightly brush the gums and massage them properly to promote their blood circulation. 2, brush the biting surface of the teeth. Hold the toothbrush flat and brush the teeth back and forth with moderate strength. The dynamic bristles of the health care toothbrush can play a unique role in different parts of the teeth, cleaning the tooth surface and the interdental gaps respectively; the flexible and thin brush head can clean the hard-to-reach back molars as well. 3. Brush the inner side of the teeth. Hold the toothbrush upright. Use the dynamic bristles on the front of the toothbrush to gently clean the inner surfaces of the teeth up and down. 4. Gently brush the surface of the tongue. Gently remove food debris and bacteria from the inside out. Keep your breath fresh.