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The cleaning of oral cavity is an indispensable cleaning behavior in human life. To ensure the health of the teeth, the regular cleaning of the teeth has become a daily routine for modern people. Therefore, most people would brush their teeth to maintain the clean of the oral cavity after getting up and before going to bed. However, the teeth-brushing only can clean the inside and outside of the teeth and the area above the gums. For the plaque between the teeth and the periodontal cavity, dentists generally recommend flossing to prevent food debris from accumulating in the teeth except toothpaste and sterilizing mouthwash. Therefore, a variety of dental floss and floss sticks are available for carrying around. Among them, floss sticks are commonly used due to the protability and disposability. Besdies, some people apply the floss sticks because they are not used to put the fingers into the mouth by using floss. Other reason is that it is inconvenient to clean the hand in some occasions. The dental floss is made of nylon, plastic and other fibers, which can reduce diseases such as periodontal disease, bad breath and tooth decay.
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