The Frayed

Maybe it's been a while since you replaced your toothbrush, but hopefully it doesn't look like this...Frayed toothbrushes don't clean our teeth as well, but they do a good job at creating a false sense of security.  The stiff, frayed bristles don't clean the pits of our teeth anymore, and they also don't reach down into small areas near the gums where cavities and gum disease form.  For the same reason that you wouldn't want to use a frayed toothbrush, you'll want to stick with soft bristles:  the hard bristles just don't clean as well and they may even hurt your mouth.  The American Dental Association recommends replacing your toothbrush or toothbrush head at least every three months.  See ada.org for more information.