2. Wrong Toothbrush
Toothbrush bristles are made of nylon. A machine cuts the bristles to make them equal in height, but this leaves the tips of the bristles jagged and unsafe for teeth. Of course, this is a microscopic issue but it can lead to big problems. So another machine rounds the tips, making the bristles safe for brushing. Some companies do a better job of rounding than others. Using a poorly-rounded tip can damage your teeth. Ask your dentist for a recommendation or look for the American Dental Association’s (ADA) Seal of Approval on the package.