How Often Should I Change My Toothbrush?

ANSWER: Every 3 months.

This may come as a surprise to you; however, toothbrushes aren’t meant to last forever.  With consistent use of the toothbrush, the bristles begin to weaken and flare into a new shape.  When the bristles begin to bend or fray, this makes the toothbrush less effective. Studies show that a new toothbrush, with more upright bristles, remove more plaque than a toothbrush that is worn. 

Is there an exception to the rule?
Remember, even if your toothbrush appears to be clean and your bristles are intact, it contains an excess of bacteria. Especially after a recent illness, those germs continue to linger around even after a quick rinse under the faucet.  This means that if you do not replace your toothbrush after being sick, you leave the potential of reinfection!