We recommend our patients change their toothbrushes every three months, or with the seasons. And even sooner if you’ve recently had an infection such as sinusitis, pneumonia, or upset stomach. A study demonstrated that these bacteria can stay on the toothbrush, and remain there for up to a month! Make sure to buy a soft-bristled replacement toothbrush with round-ended bristles which are easier on your enamel and gums. Hard, worn, or frayed bristles can actually damage your gum tissue. Powered toothbrushes are more effective at removing plaque, and are ideal for people with arthritis or other health conditions. We already know that regularly replacing your toothbrush is good for the health of your teeth and gums, so fighting infection is just one more reason to invest in a new toothbrush!