Surprisingly, Japan is the only country in the world that uses round toothpicks to clean teeth. Yes, toothpicks are not only used in Japan, and there is more than one type. In foreign countries, the main use of round toothpicks is to ``pierce fruits and dishes.'' Platy or triangular objects are used for tooth care. What is the reason for this, and why is it not the case in Japan? Here, toothpicks from not only Japan but also other countries are on display, and you can learn how to use toothpicks. If you adopt the toothpick selections of the Nordic countries, which are advanced countries in dental care, you too can become a toothpick expert. In addition, you will be able to gain surprising and convincing knowledge, such as the manufacturing methods of toothpicks in different eras, the roots of toothpicks, and the deep relationship between toothbrushes and toothpicks. Foreign language support: English, other languages ​​require accompanying interpreter.