Three signals appear: it means that the toothbrush should be replaced

Kahiro Maruyama, President of Maruyama dental hospital in Gaoqi City, Gunma Prefecture, Japan, said that the cleanliness of toothbrushes is related to the health of the whole mouth. After the toothbrush is used, impurities such as toothpaste and food residues will remain on the bristles. It is advisable to scrub them under running water when cleaning, otherwise germs will easily breed.

The humid environment is a breeding ground for germs. Therefore, after cleaning the toothbrush, the brush head should be placed upward, and the brush head should not touch other people’s toothbrushes to avoid cross infection. Before using the toothbrush, it is necessary to confirm that the bristles are dry. It is better to prepare two toothbrushes to be used alternately in the morning and evening, so as to ensure that the bristles are dry during use.

After using the toothbrush for three weeks, the number of bacteria reached one million. Therefore, timely replacement of toothbrush is also the key to ensure oral hygiene. Maruyama and Hiroshi suggest that toothbrushes be changed once a month as far as possible; Because children like to bite the bristles, children’s toothbrushes should be replaced more frequently; Since the electric toothbrush has a vibration descaling function, it is recommended to change the brush head every 3-4 months. In addition, in case of the following three signals, replace the toothbrush in time.

1. The color of the root of the toothbrush becomes dark the dirt on the root of the bristles will slowly accumulate, which is one of the reasons for the growth of bacteria. Even cleaning after each use can not completely prevent it. Therefore, once the color of the root of the toothbrush becomes dark, it is a signal of more dirt accumulation, and it should be replaced in time.

2. The tip of the toothbrush is soft and collapsed once most of the bristle tips are found to be soft and collapsed, it means that they are worn heavily and cannot clean teeth well. They should be replaced.

3. The distance between bristles becomes larger usually, the bristles are densely arranged. If the distance between the bristles is significantly wider, dirt is more likely to remain at the root of the toothbrush. It is better to replace it with a new one.