How to distinguish whether the quality of the hair planting machine is good or not?
1. Bristles The bristles of the toothbrush are mainly divided into bristles and nylon filaments. Most of the traditional manual toothbrushes use bristle materials. The bristles of bristle materials have better cleaning effect and ability to absorb toothpaste than nylon filament materials, but the bristles of bristle materials are better. It is very absorbent and dries very slowly, and the bathroom is relatively humid. After a long time, the brush head is easy to breed bacteria and germs. Later, a company invented nylon. The bristles of nylon silk materials are not absorbent, wear-resistant, thin and soft, have good elasticity, and have a good massage effect. Since then, nylon silk has become the main material for bristles. According to different shapes, the bristles of nylon silk materials are also divided into three types, cylindrical, diamond or triangular. Compared with cylindrical bristles, diamond-shaped and triangular-shaped bristles have better cleaning ability, because these bristles have more cleaning margins, which can deepen the depth of the interdental space and clean more plaque. The diamond-shaped bristles are placed more compactly, the brushing area is large, 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 bristles, medium bristles and hard bristles. Generally speaking, children's gums are relatively fragile, and soft bristles can be used. Now there are also special electric toothbrushes for children. For people with more stains, such as smoking and drinking coffee, the brush head with hard bristles is more suitable, but in general, the bristles with moderate hardness are the choice of most people.
