How to choose a toothbrush?

To choose a toothbrush, I suggest you choose a toothbrush with a small head and soft bristles. The size of the brush head and the hardness of the bristles are also exquisite. Toothbrush heads are usually able to cover the surface of the two front teeth. We can choose according to age in the supermarket. The heads of 0-2 years old are about 15 mm long, the heads of 2-6 years old are about 19 mm long, and 6-12 years old. The brush head is about 22 mm long, and about 25 mm long for 12-year-olds. The brush head should not be too long, otherwise it will be difficult to clean the back half of the mouth. The width should not exceed four rows of bristles. The top of the brush head is oval. Such a brush head is easy to operate; the material of the bristles should be soft and thin nylon Silk, the top of the bristles is a polished surface, wear-resistant and easy to dry, the softness of the bristles should be moderate, too hard will damage the tooth tissue, too soft and not easy to clean. Toothbrush handles should be more comfortable to hold by yourself, flexible and non-slip.