Brushing your teeth immediately after eating fruit can cause cavities
[Introduction] We all know that the best time to brush is within three minutes after eating, so many people follow this rule. However, experts warn that you should not brush your teeth right after eating fruit. Why is that?
This is because after eating fruit, a large amount of saliva is secreted in the mouth, leading to food decomposition. During this process, acid-producing bacteria become relatively active, causing a temporary demineralization of the tooth surface. Brushing your teeth at this time can actually lead to mineral loss. It can also make your teeth particularly sensitive and prone to cavities.
This is especially true for acidic citrus fruits, as they can soften tooth enamel. Although the enamel will harden again after about 30 minutes, if you brush your teeth immediately after drinking orange juice, you can brush away some of the enamel, significantly increasing the risk of tooth erosion.
In addition, dried fruits like raisins are also very harmful to teeth because they are not only high in sugar but also very sticky. A dental expert in the U.S. said: "Small pieces of dried fruit stick to teeth for a longer time, which can lead to cavities."
The best time to brush is 5-10 minutes after eating fruit
So, when is the best time to brush? Some people choose to wait a few hours after eating and only brush before going to bed.
Generally, the best time to brush is about 5-10 minutes after eating. This is because it prevents food from continuing to linger, while also giving your teeth time to remineralize, so brushing won't cause mineral loss.
Oral bacteria have a special fondness for sugar
Also, do not eat anything after brushing your teeth. During sleep, saliva becomes thicker and the oral environment is rich in bacteria. In this bacterial environment, saliva is not well diluted, meaning this is a period of bacterial growth, which is particularly harmful to teeth.
This is especially true for sweets, as oral bacteria have a special "fondness" for them. Many foods, including fruits, contain sugars that oral bacteria love. Therefore, it is best to minimize your intake of sweets before going to bed as well.