Compiled by Chen Jianfu Even though you brush your teeth every day, when you visit the dentist, do you still get told that there are too many calculus on your teeth and your teeth are not brushed clean enough? Oral hygiene is very important to physical health. In recent years, medical data has even pointed out that suffering from periodontal disease may increase the risk of diabetes, cancer and heart disease. How should we clean our teeth to properly protect our mouth? In recent years, many Japanese dentists have been advocating the yogurt brushing method, which has caused a lot of discussion among Japanese people. Three tooth-protecting bacteria: Lactobacillus reuteri, Lactobacillus salivarius, and Lactobacillus rhamnosus. Japanese dentist Seiji Amano pointed out that the key to health of the popular yogurt brushing method lies in the lactobacilli in yogurt. Although most people mention When you think of lactobacilli, you only think of their effects on intestinal health and weight loss. In fact, there are many lactobacilli strains that have the ability to protect the oral mucosa and repel periodontal bacteria and tooth decay bacteria. For example, Seizhi Amano, Professor Hiroki Futakawa from the Graduate School of Medicine, Dentistry and Pharmacy at Hiroshima University, once discovered that if people consume Lactobacillus reuteri (L. reuteri, also translated as Lactobacillus lode, R bacteria) every day for two weeks Yogurt can prevent the growth of 80% of tooth decay bacteria and 40-80% of various periodontal bacteria. Not only Lactobacillus reuteri, Professor Yasuhiro Koga from the Infectious Disease Research Laboratory, Tokai University School of Medicine, Japan also found that our saliva contains Lactobacillus salivarius (L. salivarius) LS1, which actively attacks adult periodontitis-causing bacteria and protects Teeth are protected from periodontal disease. This year, a study from Prince of Songkla University in Thailand pointed out that ingesting Lactobacillus rhamnosus (L.rhamnosus, the most famous strain is often referred to as LGG) through fermented milk for four consecutive weeks can also inhibit the growth of tooth decay bacteria. , and four weeks after stopping ingestion, 80% of Lactobacillus rhamnosus was still alive in the mouth, showing that lactic acid bacteria have a long-term and powerful effect in preventing periodontal disease. Brushing teeth with the right strains of bacteria and sugar-free yogurt is effective. Amano Sengchi suggests that people can pay attention to the ingredient list when buying lactic acid bacteria powder. If it contains the above-mentioned bacteria, they can make homemade sugar-free yogurt and use it. brush teeth. If it is inconvenient for you to make your own yogurt, you should also pay attention to choosing sugar-free yogurt that contains the above-mentioned strains of bacteria when purchasing commercially available products. 1. Before performing the Yogurt brushing method, you should still use toothpaste and a toothbrush, and carefully brush each tooth, between teeth and gums in a vertical direction. After brushing, you should also rinse your mouth once according to the normal brushing process. 2. Then use the toothbrush dipped in sugar-free yogurt to brush your teeth. Dip a small amount at a time and follow steps 1 in steps to brush carefully. 3. After brushing your teeth with yogurt, be careful not to rinse your mouth, otherwise the protective film you have finally created will be washed away again. If you feel uncomfortable due to too much yogurt in your mouth, you can consider swallowing it or spitting it out. Can.