Toothbrush choose a smaller brush head is more appropriate, toothbrush head should be appropriate width. Adults generally not more than 4 rows, children not more than 3 rows of bristles; moderate length: generally cover 2-3 tooth surface, easy to brush all sides. In addition, the treatment of toothbrush bristles is also important. After the bristles are cut, if they are not rounded, they can easily damage the mouth because they are too sharp. Toothbrushes are best replaced every 3 months, otherwise the bristles tend to accumulate bacteria, which is not good for oral health. Brush your upper teeth downward and brush your lower teeth upward. As long as you master the correct method of brushing your teeth, you can achieve the purpose of cleaning your mouth. When brushing the teeth, the bristles are parallel to the long axis of the teeth, and the bristles point to the gums, with pressure and rotation in the direction of the gap between the teeth. When brushing the occlusal surface of the teeth, the horizontal short brush method is more thorough, and a certain amount of pressure should be added so that the tip of the bristles can enter the sulcus gap of the occlusal surface and move horizontally in the direction of the dental arch. Care should also be taken not to miss the terminal axial surface of the most terminal tooth in the row, i.e. the side near the pharynx, where the toothbrush head is placed as far inward as possible and can be brushed by rotating the brush head. When cleaning the junction of the teeth and gums, use a little force and repeat up and down the same area 5 to 6 times. Choose quality toothpaste with fluoride The basic function of toothpaste is to clean teeth and prevent tooth decay, and these two points are the main basis for choosing toothpaste, said President Zhang. First of all about cleaning teeth, you should choose toothpaste according to the abrasive agent it uses. Toothpaste is used to clean teeth through abrasives, so the quality of abrasives is the main basis to identify the quality of toothpaste. Different abrasives differ greatly in their roughness. High-grade silicon abrasives are the best abrasives available. American Dental Association laboratory test results show that: rough abrasives are more than three times more abrasive to teeth than high-grade silicon. How can I tell if a toothpaste abrasive is rough or not? 1, look at the appearance of the paste: the paste is more delicate and smooth, usually high-grade silicon for abrasives, can be safe to use; 2, taste the taste of brushing teeth: if you feel rough, there are particles like sand stagnant in the mouth, need to rinse the mouth many times, most of the toothpaste containing rough abrasives, it is recommended to stop using immediately; Secondly, should be based on the effectiveness of anti-cavity to choose toothpaste, that is, to choose fluoride toothpaste.