Why we have to change toothbrush

Toothbrush is an indispensable oral hygiene tool in our daily life, but not everyone knows the maintenance of toothbrush. Some people don't change their toothbrush after using it for several years. Some people put their toothbrush in a closed toothbrush box after brushing their teeth, and even two or three people share a toothbrush. These methods of using toothbrush can not clean the mouth, but become a source of oral bacteria. The correct maintenance method of toothbrush is as follows:

After brushing your teeth, you should wash the toothbrush thoroughly with clean water. You should not only wash away the residual toothpaste and food debris on the toothbrush, but also dry the water on the toothbrush as much as possible. Put the toothbrush head upward into the mouthwash cup and place it in a dry and ventilated place. Because wet toothbrushes are prone to bacteria. Some scholars have found that a large number of bacteria multiply on the toothbrush of both healthy people and patients after one month of use. Dirty toothbrushes can not only cause gingival inflammation, but also a source of infection for a variety of diseases.

Toothbrushes are mostly made of nylon wire, which is easy to deform when heated. Therefore, they cannot be washed in high-temperature water, let alone disinfected by boiling. A toothbrush cannot be used for a long time. It is generally replaced once a quarter, or it should be replaced in time when the bristles are curled and forked, so as not to stab the gums.

We should adhere to the principle of one toothbrush for each person to avoid the cross transmission of infectious diseases.