When choosing a regular toothbrush, the first thing to look for is the brush head. A toothbrush with a square or diamond head can clean teeth in any shape, but the size of the brush head should be chosen appropriately. 0-2 year olds should choose a brush head no larger than 15mm, 2-6 year olds no larger than 19mm (the new version of a dime), and 6-12 year olds three steps larger than 22mm. Convenient to clean every tooth surface. Next to the bristles, the bristles are flat, wavy, and full contact type. The wavy type is said to be easier to brush the adjacent side of the teeth. The full-contact type is said to be used and placed correctly, it will automatically stick to the edge of the gums at an angle of 45, which is closer to the bass brushing method we are going to introduce. This type of toothbrush has a longer end and is said to be effective in cleaning difficult areas. In fact, any type of bristle design can effectively clean your teeth, so you can choose whatever you like. It is important to note that the bristles are preferably soft and do not hurt the teeth and gums. Then look at the brush handle, brush handle has a straight handle, crank handle, flexible handle, non-slip handle, straight handle is easier to use, crank handle is similar to dental tools, easier to penetrate deep into the mouth. The elastic handle is said to be able to avoid damage to the gums caused by excessive toothbrush strength, and the non-slip handle has a non-slip function as the name suggests. There is no handle design that can have special cleaning effect on teeth, just choose according to your personal preference. If used correctly, both regular and electric toothbrushes can clean teeth effectively, but if you want to choose an electric toothbrush to get a good cleaning effect, you need to consult a dentist in a hospital. Because of the fast speed of electric toothbrushes, they can easily damage your teeth if used improperly. The technique of using an electric toothbrush is different from a regular toothbrush, so if you want to get a good cleaning effect when using an electric toothbrush, you need to consult a dentist.