2023-02-17

In principle, there are two types of toothbrushes electric: mechanical rotary toothbrushes and acoustic vibrating toothbrushes. The mechanical rotary toothbrush was an early toothbrushes electric. High frequency friction will cause certain damage to the tooth surface. Basically, most of the time, ma

2022-09-06

The most important purpose of brushing your teeth is to remove plaque.Plaques can eat away at the surface of the teeth, leading to tooth decay. Long-term adherence to the teeth can also lead to problems such as gingivitis.So brushing your teeth is a skill.It doesn't care if your hands are hard enoug