1, bristle materials
The bristles of the toothbrush are mainly divided into bristles and nylon filaments. Most of the traditional manual toothbrushes use bristles raw materials. The bristles of bristles raw materials can clean the bristles and absorb toothpaste compared to nylon The silk material is better, but the bristles of the bristles material are very absorbent and dry very slowly, and the bathroom is relatively humid, and the brush head is easy to multiply bacterial germs after a long time. Later, a company invented nylon. The bristles made of nylon filaments are non-absorbent, wear-resistant, slender and soft, have good elasticity, and have a better massage effect. Since then, nylon filaments have become the main material for bristles.
The bristles of nylon filaments are also divided into three types according to different shapes, cylindrical, diamond or triangular. Compared with cylindrical bristles, diamond-shaped and triangular bristles can clean more strongly. Because these bristles have more cleaning margins, they can deepen the depth of the interdental space and clean more plaque.
The diamond-shaped bristles are placed more compactly, the brushing area is larger, and the cleaning effect is better. In addition to understanding the raw materials and shapes of the bristles, we also need to further understand the hardness of the bristles. The bristles are divided into soft, medium and hard bristles. Generally speaking, children’s gums are relatively fragile, so you can use soft bristles. There are also special electric toothbrushes for children. For people with more tooth stains, such as smoking and coffee, a hard-bristled brush head is more suitable, but in general, the brush with moderate hardness is the choice of most people.
2, planting density
The density of bristles on the brush head is high, which means that the amount of planting is larger, and the area that touches the teeth is larger. The better the cleaning effect.
3. Rounding rate
Rounding rate has a direct impact on the maintenance of gums. Electric toothbrush testing specifications stipulate that the rounding rate of adult electric toothbrushes shall not be less than 50%, and the grinding rate of children's electric toothbrushes shall not be less than 70%. If you use an electric toothbrush with an unqualified rounding rate, it will damage the soft tissues of our oral cavity and cause damage to the appearance of the teeth, and it will not achieve an outstanding cleaning effect.
The bristles that have not been rounded are mostly irregular and sharp. The bristles that have been rounded are more rounded.
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