Toothbrushes can become heavily contaminated with oral microorganisms. Because most families store toothbrushes in a common storage space, airborne bacteria can move from toothbrush to toothbrush, passing opportunistic infections such as periodontal disease and the common cold from one person to another. Your best defense is to go undercover. Splattering water, contact with skin, and toothbrushes knocking against one another are all circumstances that contribute to the spread of bacteria. Dr. Glazer recommends rinsing bristles thoroughly, then shaking any extra moisture from the brush and storing it upright before placing a cover over the toothbrush head.
Studies also show a link between self-contaminated toothbrushes and oral inflammatory diseases.
Bacteria from food particles and contact with the skin are unavoidable consequences of daily brushing. Dr. Glazer says people should wash their hands both before and after brushing, and soak unused brushes in an antiseptic mouthwash. Having more than one toothbrush makes this process a lot more practical. Protect yourself by protecting your toothbrush. Use a community toothbrush holder 1.