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Let me introduce dental floss. I used to worry that using dental floss might cause the gaps between my teeth to widen, but that was just a misconception. Now, it has become an indispensable item for my oral care. While there are some flosses that are slightly thicker, this one is just the right thickness to use without any difficulty, so I am using it very well. I don't go as far as three times a day, but I make sure to use it every night before bed.