To answer in an easy-to-understand way: ordinary people brush their teeth at least twice a day, at least once in the morning and once in the evening.
If you can brush your teeth after meals, it’s better, 3min~5min each time. If you can’t brush your teeth after meals, I hope you can brush your teeth in the morning and evening, and rinse your mouth with water every time after eating, because this can also reduce bacterial activity.
What I want to emphasize here is that brushing your teeth before going to bed is actually very important. Because it is often overlooked by many people.
There are three factors:
(1) After going to bed at night, there are at least 6 hours without food. So brushing your teeth before going to bed is fine. The longest effective time to keep the mouth clean.
(2) Brushing teeth before going to bed is the most important time to inhibit bacterial activity. Because if we do not brush our teeth before going to bed after eating, the food residue will be decomposed within a few hours of our sleep and a large number of bacteria will multiply. Corresponding acidic substances are produced to destroy the surface of our teeth.
(3) Brushing teeth before going to bed is generally easy to achieve the best results. As we know that many people often brush their teeth in the morning, and often less than three minutes. Therefore, it fails to achieve the purpose of thoroughly cleaning the oral cavity. Besides they don’t brush their teeth before going to bed. You can take care of your teeth and brush your teeth carefully to achieve a thorough brushing.