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3.Floss
Brushing doesn’t remove every piece of plaque. Lucky us, we have dental floss, which removes food particles in between teeth and at the gum line. Those who don’t floss regularly have much higher chances of developing an oral disease, such as gingivitis. So, grab that string and start flossing!
3. 使用牙线
刷牙不能去除所有的污垢。幸运的是，我们有牙线，它能去除齿缝间及牙龈上的食物残渣。不经常使用牙线的人会更容易患上牙龈炎等口腔疾病。所以，握紧牙线开始清洁牙齿吧！
