Most dentists agree you should change your toothbrush at least every two to three months.
According to a recent report, “20 Things You Should Throw Away For Better Health”, by TIME (1/30, Jones) a toothbrush is one of these things. The American Dental Association (ADA) spokesman, Ruchi Sohota, was quoted to say, “Toothbrush bristles start to fray after two months and should be replaced by three months”.
After daily wear, a toothbrush can get worn and become less effective in cleaning teeth and gums. Bacteria, germs, and fungus can flourish in between the bristles. Putting a wet toothbrush in an enclosed case can cause mold to grow on it. Let your toothbrush dry before putting it a case.
It is very important to change your toothbrush after you have had a cold, flu, mouth Infections, cold sores, and sore throat. This will help you from re-infecting yourself and others. Even if you are not sick, bacteria and fungus can still grow on your toothbrush.
Always rinse, shake any excess moisture, and air dry your toothbrush after you brush your teeth. Also try to keep your toothbrush away from any flushing commode because of germs that may travel with any aerosols.