How Often Should You Really Replace Your Toothbrush?

Three months is the rule of thumb — but frayed bristles, illness, and braces all change the math. Here’s what our hygienists actually recommend.

Most people keep their toothbrush far too long. The bristles that clean effectively on day one are visibly splayed by month three — and a splayed bristle cleans up to 40% less plaque along the gumline. If you can’t remember when you bought your current brush, it’s time.

The three-month rule — and its exceptions

Three months is a solid baseline for most adults. But replace your brush sooner if you’ve been sick (bacteria linger in bristles), if you wear braces (brackets wear bristles faster), or if you’re a naturally firm brusher. Electric brush heads follow the same rule: worn is worn, regardless of the motor behind it.

Soft bristles win, every time

Medium and hard bristles don’t clean better — they wear enamel and recede gums. Choose a soft brush, angle it 45 degrees toward the gumline, and let technique do the work. If your bristles fray within a month, you’re pressing too hard, and your gums will thank you for easing up.

Still unsure? Bring your brush to your next cleaning. Our hygienists are happy to check your technique — no judgment, just better brushing.