The size of the toothbrush head
According to the regulations of the American Dental Association, the length of the toothbrush head should be 2.5-3 cm, the width should be 0.8-1 cm, and there should be 2-4 rows of brush hair, 5-12 bunches of brush hair in each row. The front end of the toothbrush head should be round and blunt. These rules can be used for reference when people choose toothbrushes.
Hardness of brush hair
generally can be divided into soft, neutral, hard three kinds, usually using neutral hardness toothbrush is more suitable. When buying a toothbrush, you can press the brush hair with your finger. If your finger feels tingling, it means that it is too hard to choose. Most of the brushes sold in the market are nylon brushes. The elasticity, uniformity and hardness of nylon brush are better than that of pig hair toothbrush, which is more conducive to oral health care.
Angle between brush head and brush handle: There are two types of toothbrushes on sale: linear and angular. Linear toothbrush is more powerful when used, and angular toothbrush has better cleaning effect on posterior teeth. This angle is suitable for 17 to 20 degrees.
op of the brush
The top of each brush should be round and blunt, no sharp angle, and can be judged by hand when purchasing.
periodontal disease patients or older people, gingival atrophy, increased space between teeth, in addition to the use of general toothbrush, but also should use the toothbrush between teeth, the brush hair cone-shaped, long strip, etc., can be used. There is also a toothbrush with only two rows of bristles, which is used to massage the gums. The concave toothbrush with two rows of outer bristles longer than the two rows of middle bristles is specially designed for orthodontists. This toothbrush can not only clean the tooth surface, but also clean the food residue on the orthodontic appliance. For those with inconvenience in hand and foot movements (such as stroke patients), electric toothbrush and light-energy ionic toothbrush can be used.