When college students use toothbrushes, it is generally recommended to use soft-haired toothbrushes. This is because a soft toothbrush can clean teeth and gums better, and at the same time reduce the damage to teeth and gums.

In addition, it is also important to choose a toothbrush that suits you. According to the regulations of American Dental Association, the length of toothbrush head should be 2.5 ~ 3cm, the width should be 0.8 ~ 1cm, and there are 2~4 rows of bristles, with 5~ 12 bundles in each row. The front end of the toothbrush head should be round and blunt. In terms of electric toothbrushes, the price of electric toothbrushes suitable for college students is controlled around 200 yuan, with the highest cost performance.

1. Misunderstanding of toothbrush storage

(1) Put the toothbrushes together.

In order to save trouble, some families put toothbrushes in tooth cups, and the bristles will also be infected with bacteria. It is recommended that each person use a tooth cup.

(2) Toothbrush * * *

Family members and lovers should not use toothbrushes. Because personal toothbrushes, even if there are more bacteria, come from your own mouth. As long as your immunity is normal, it will not cause disease. And * * * is easy to cross infection.

(3) Don't clean the toothbrush holder.

Even the shelf where the toothbrush cup is placed will accumulate dust and dirt if it is not cleaned in time, which will become a hotbed of bacteria and lead to the proliferation of toothbrush bacteria. It is recommended to clean the toothbrush holder once a week.

(4) put the toothbrush in the bathroom

Most families have a three-in-one bathroom, toilet and toilet. In this case, it is best to put the toothbrush and the tooth cup in the cupboard or other rooms to prevent airborne germs from getting on the tooth cup after flushing the toilet.

(5) Use a toothbrush to the end

Old toothbrushes are also prone to bacteria. The American Dental Association suggests that a new toothbrush should be replaced every three or four months, especially when the body's immunity is poor, which helps to prevent infection.

(6) Put the brush head down.

After the toothbrush is used, it should be placed in a cool and ventilated place to dry, otherwise the humid environment will easily breed bacteria, especially when traveling, and then put it into the toothbrush box after drying in the shade.

2. Choice of toothbrush

Choosing a toothbrush takes only five steps.

Step 1: Look at the brush handle-the brush handle should have anti-slip design.

If the toothbrush handle has anti-slip design, it will not only make people hold it conveniently and feel comfortable, but also make the brush head of the toothbrush go straight to the plaque area, which is convenient for cleaning teeth. Therefore, when buying a toothbrush, it is recommended to buy a toothbrush with an angle of 17 -20 degrees.

Step 2: Look at the brush head-the brush head should be short and narrow.

Many people like to buy toothbrushes with long and wide brush heads, thinking that they will brush more cleanly. In fact, the short and narrow brush head is more flexible and easy to rotate in the oral cavity, so it is easier to clean tiny parts in the oral cavity and it is not easy to leave dead corners. Therefore, when buying a toothbrush, it is recommended to buy a toothbrush with a brush head length of 2.54-3. 18 cm and a width of 0.79-0.95cm..

Step 3: Look at the bristles-the hardness of the bristles should be moderate.

Are the bristles harder or softer? In fact, bristles are the best! If the bristles of the toothbrush are too hard, although the cleaning power is strong, it will do great harm to the teeth; If the toothbrush bristles are too soft, it is not easy to wear teeth, but the cleaning strength is not enough. Therefore, choosing a toothbrush with moderate bristles will not hurt your teeth and your cleaning ability is quite strong.

Step 4: Look at the bristles-the bristles should be arranged reasonably.

The American Dental Association suggests that the reasonable arrangement of bristles should be: a brush head has 2-4 rows of bristles, and each row has 5- 12 bundles of bristles. In addition, the length of toothbrush bristles should be 10- 12 mm and the width should be 3-4 mm, and a certain distance should be kept between each bundle of bristles.

Step 5: Continue to look at the bristles: the brush tips should be smooth.

If the factory does not smooth the tips of bristles during processing, it may cause harm to people's teeth and gums if it is directly used for brushing teeth. If the cut bristles are ground flat, this can be prevented and the health of teeth and gums can be protected.

The quality of toothbrush will directly affect the health of teeth, so when we buy toothbrushes at ordinary times, we suggest to be cautious and choose a toothbrush that suits us to protect the health of teeth.