By the time your toothbrush looks worn, it’s already lost most of its cleaning power. And most people have no idea when it’s time to swap one out.
Rebecca Kaplan, APRN, a primary care provider with Hartford HealthCare Medical Group, says how often you should replace your toothbrush is more straightforward than most people think.
“The general recommendation is every three to four months,” says Kaplan. “But a lot of people go much longer without even realizing it.”
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When to replace your toothbrush
Three to four months is the general guideline, but there are several reasons you might need to replace it sooner.
“You don’t have to wait for the bristles to look completely destroyed,” Kaplan notes. “If they’re starting to wear down, it’s time. Most people are surprised by how quickly that happens, especially if they brush with pressure.”
Electric toothbrush heads follow the same timeline. Three to four months is the standard, though Kaplan notes you may need to replace sooner depending on how hard you brush. Bacteria also accumulates on bristles over time, another reason the three to four month guideline exists.
Poor oral health affects more than just your teeth. Research has linked poor dental health to an increased risk of heart disease, as bacteria from the mouth can enter the bloodstream and affect the cardiovascular system. Another reason a simple habit such as replacing your toothbrush should be taken seriously.
> Related: The 2-Minute Health Routine: 8 Things to Do While Brushing Your Teeth
Signs it’s time to replace your toothbrush
You don’t always have to wait for the three month mark. Bristles that are visibly bent, discolored or flattened are a sign the brush needs to go regardless of how long you’ve had it.
“The bristles tell you everything,” Kaplan explains. “If they’re no longer standing upright, the brush isn’t doing its job.”
Kids’ toothbrushes tend to wear out faster. Children often brush with more pressure and less technique, which means bristles fray sooner. Check the bristles monthly and replace as needed.
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Always replace your toothbrush after being sick
Most people don’t think to replace their toothbrush after an illness. Bacteria can linger on bristles after a cold, flu or strep throat, and using the same brush after you recover can work against you.
“After any illness where you’ve had a fever or a throat infection, I always recommend replacing the toothbrush,” Kaplan adds. “It’s a small thing that makes a real difference.”
