Brush from the outer side of the teeth, placing the brush head at 45 degrees to the gum side and gently brushing back and forth, top teeth from top to bottom, bottom teeth from bottom to top; clean the inside of each tooth in the same way. Place the toothbrush flat and brush back and forth against the surface of the teeth where food is chewed (occlusal surface), carefully cleaning the grooves and sockets. Place the bristles on the tongue and brush gently back and forth from the root to the tip of the tongue to better remove oral odors Medical Education Network. Note: Brush your teeth with the vertical brush method, no more than 2-3 minutes each time, do not use too much force, so that you can not only keep your mouth clean, but also avoid excessive abrasion of the teeth. It is recommended to get a regular dental cleaning from your dentist every six months to clean the teeth that have produced plaque or tartar in a timely manner. There are standards for toothbrush selection Experts point out that before brushing, it is important to choose a quality toothpaste and toothbrush. Children should choose a toothbrush with 2-3 rows, 3-4 bundles of bristles per row, and a flat top type is good. The brush head should be shorter and narrower, the gap distance between each bunch of bristles should be larger, the bristles should be moderately soft and hard, and the bristles should be sharpened. Children should use children’s toothbrushes with softer bristles. In line with the above conditions called health care toothbrush, this toothbrush head is small, suitable for zoning scrubbing, rotating brushing flexible and convenient effective contact area, reducing the dead angle of the bristle area; hair bundle between the appropriate distance, so that it is easy to wash and keep clean; hair bundle height is appropriate, cylindrical, can prevent the gums from being pierced or bruised, etc.. Besides, it is very important to keep the toothbrush clean and hygienic, otherwise, the large amount of bacteria reproduced on it is not good for the body and oral hygiene. After brushing your teeth, wash your toothbrush several times with water, shake it dry and place it in a ventilated and dry place with the head up. Do not put the head of the toothbrush upside down in the mouthwash cup, so that the toothbrush in a humid environment easy to make bacteria multiply. It is best to change a new toothbrush in about 3 months to really play the role of toothbrush. The elderly should choose a long and straight handle toothbrush, the middle part of the handle is slightly upward bent. And has a certain flexibility, easy to grasp and use. Toothbrush head should be short and narrow, flexible in the mouth rotation. Toothbrush bristles and nylon wire two, according to the teeth, periodontal health and habits and preferences to choose. But no matter which one, should have a certain flexibility and hardness. If the bristles are too soft, it is not easy to remove dirt; if they are too hard, it will have a damaging effect on teeth and gums. The elderly should choose a bristle toothbrush with slightly soft bristles, preferably with pig bristles. Toothbrush bristles should be 2 to 3 rows of 6 to 8 bunches each, with proper distance between the bunches to keep the toothbrush clean.