How often is it better to change the toothbrush?

Maybe when you brush your teeth, you find that the bristles of your toothbrush are deformed. The feeling of brushing is awesome when I just bought it back. When you buy a toothbrush again, it's not hard to find that the advertisement and warm instructions on the toothbrush will remind you. Dental experts suggest that you change the toothbrush every three months. Why should I change my toothbrush every three months? I have tried it for three months, but my toothbrush is still good. In fact, there is a scientific basis for changing my toothbrush every three months.

Generally speaking, the domestic toothbrush on the market at present, after using for 1-3 months, the toothbrush bristles will be bent. The curved bristles not only can't clean the food residue in the teeth, but also scratch the gums. Therefore, when you find that the toothbrush bristles are bent, you should change a new toothbrush immediately. In addition, the toothbrush head used for a long time is easy to retain bacteria. Therefore, it is generally recommended to replace the toothbrush at least every three months.

According to the actual situation, the deformation of toothbrush bristles and brushing frequency / day were taken as the degree.

According to the United States medical experiments, some patients with long-term throat disease, if every few weeks to replace a new toothbrush, for the condition has improved significantly.

If the toothbrush is used continuously for more than two months, there will be Candida albicans, hemolytic streptococcus, lung cancer bacillus, glucococcus and other bacteria. It can cause acute tonsillitis, pharyngitis and other diseases. For people with unsound immune system, it is easy to cause rheumatic fever and acute glomerulonephritis. Therefore, after each brushing, the toothbrush must be washed and placed in a dry place.

The brush head of the toothbrush should be placed upward, and it is best to soak it in vinegar every three to five days, and replace it with a new one at least three months, so as to ensure the cleanness of the toothbrush.