You should replace your toothbrush every three or four months, according to the American Dental Association, because it becomes less effective at removing plaque over time. While it is certainly true ...

Most people know that proper oral health technique is to brush your teeth twice a day for 2 minutes per session. But did you know that the type of toothbrush you use can impact how clean your teeth ...

Add Yahoo as a preferred source to see more of our stories on Google. CentralITAlliance/Getty Images Brushing your teeth twice a day might seem like a mindless activity, and during those two minutes, ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. There are two types of ...