3. Grip Your Toothbrush Like a Pencil

Does your toothbrush look as if it's been used to clean the car? If so, you're probably brushing too hard. Contrary to what some scrub-happy people think, brushing with force is not the best way to remove plaque. The best way is to place your toothbrush at a 45-degree angle against your gums and gently move it in a circular motion, rather than a back-and-forth motion. Grip the toothbrush like a pencil so you won't scrub too hard.

3. 像拿铅笔一样握着牙刷
你的牙刷是不是看上去像用它清洗过一辆汽车一样？如果是，你可能刷得太用力了。相反，那些习惯于“欢乐擦洗”的医务工作者们认为，用力刷牙并不是除去牙斑最好的方法。最好的方法是放置牙刷与牙龈成45度角，并让牙刷轻轻地以圆周运动移动，而不是前后移动。像拿铅笔一样握着牙刷，这样你就不会刷得太厉害了。