Now many people began to focus on brushing, but grasp the real correct way to brush the teeth of the people is less, some people brush horizontally, where the enamel and dentin is thin, due to the concentration of stress in the neck of the teeth, water penetration will be pulled out of the neck of the teeth in a deep groove in the medical science, we call it a “wedge-shaped defect”, the lesser of which will cause tooth soreness when you eat cold, hot, sour and sweet food. This can cause toothache when eating cold, hot, sour or sweet food, and in severe cases, can lead to pulpitis. There are many ways to brush teeth correctly, and we recommend the combination of the horizontal vibration method and the rotary brushing method, which can effectively clean the teeth, and in addition, patients who have the conditions should practice flossing, in order to thoroughly clean the neighboring surfaces of the teeth, which is also commonly known as the “gap between the teeth”. Horizontal vibratory method: Also known as the Bass method. Horizontal trembling method with short trembling horizontal brushing action is the most clean plaque, so it is also known as the groove brushing method. Set the tip of the bristles and teeth gingival surface at an angle of 45 ° and mild pressure, the tip of the bristles into the gingival sulcus, and part of the sulcus, and then for the front and back to the trembling of 6 to 8 times, trembling bristles move only 1 mm. brush the upper and lower anterior teeth of the lingual palate, such as the narrow arch, can be the head of the brush vertical for a short horizontal brushing trembling. At the same time, it should also be pulled to brush the occlusal surface of the posterior teeth and clean the fossa of the occlusal surface. Rotary brushing method: also called Roll brushing or vertical brushing method. Bristles and tooth surface into 45 ° bristle head pointing to the gums, and gingiva gently contact, and then to the crown direction of rotation, the speed should not be too fast, so that repeat 8 ~ 10 times, and gradually in the lip of each tooth (buccal) surface and the tongue surface to move. When brushing the occlusal surface, the bristles are placed on the occlusal surface and moved back and forth. This method has the effect of massaging the gums, improving local blood circulation and promoting epithelial keratinization, which helps to enhance the defense ability of periodontal tissues. Selection of toothbrushes: health care toothbrushes should be used, characterized by soft bristles, flat brush surface, brush head is not big, the tip of the bristles rounded, can effectively eliminate plaque, but not damage teeth and gums. The toothbrush handle and bristles should be vertical or nearly vertical. The tips of the bristles should be rounded to avoid damaging the gums. Choose a toothbrush with two to three rows of bristles, spaced at the same interval, and with a length of about seven-sixteenths of an inch. The frequency and time of brushing: You must brush your teeth and rinse your mouth in the morning and evening. If possible, brush your teeth immediately after each meal. Brushing time is not less than 3 minutes. It is most important to brush your teeth before going to bed, because after falling asleep, saliva secretion will be reduced, and saliva can wash away bacteria and inhibit bacterial reproduction. If you do not brush your teeth before going to bed or did not brush clean, food debris in the role of bacteria will soon be fermented acid, coupled with the mouth due to the lack of sleep and saliva, can not dilute and neutralize the acid produced by bacteria, teeth are easily subject to corrosion, may cause tooth decay over time. So brush your teeth before going to bed, brush the food debris left on the teeth and tooth surface clean, and no longer eat anything after brushing, you can maintain oral hygiene overnight. Maintenance and replacement of toothbrushes: After each brushing, the toothbrush should be washed and put into a cup with the head facing upwards, and placed in a ventilated dry place. Every 1-3 months should be replaced with a new toothbrush, such as found that the bristles scattered curved, tilt should be replaced in a timely manner.