Toothbrush selection Brush head: The toothbrush head should not be too large, the thinner the better, the shape is oval, generally speaking, the adult toothbrush head length 35mm, not more than 13mm wide, children’s toothbrush head length 25mm or less, 7 to 8mm wide. brush head should cover about the length of nearly three teeth. Brush head back: It is recommended to choose a brush head back with special soft rubber for cleaning soft tissues such as tongue. Bristles: Soft bristles are best, especially those made of soft and fine quality nylon filaments; rounded bristle tips are better than flat cut or sharp, so as not to easily damage the gums. Bristle surface: wave type brush surface is more effective than flat type brush surface in removing plaque and cleaning between teeth. Toothbrush neck: the neck of the toothbrush should have a certain toughness, should not be too hard. Toothbrush handle: brush handle is easy to grip, long and thick enough to avoid grip fatigue, brush handle is generally in 5-6cm long. In the choice of brush handle should be based on the comfort of personal grip to choose. Generally require a comfortable grip at the same time also need to rotate easily. The entire brush handle should not be too hard. Toothbrush storage After brushing teeth, rinse the toothbrush with water several times, and shake the water on the bristles, put it in a ventilated place, if necessary, use cleaning agents to disinfect the toothbrush (such as light salt water, mouthwash such as Koutai), advocate one person a toothbrush. Toothbrush bristles should not be soaked in boiling water, because the bristles are easily bent and deformed by high heat, and old toothbrushes should be replaced in time (recommended every three months) to avoid damage to the gums from curling bristles.