Is It Time to Replace Your Toothbrush? 5 Signs to Watch For

How Often Should You Replace Your Toothbrush?

The American Dental Association recommends replacing your toothbrush or toothbrush head every 3 to 4 months — or sooner if the bristles look worn.

That’s because over time, your toothbrush becomes less effective at removing plaque, food debris, and bacteria from your teeth and gums. Worn bristles also miss critical areas and can irritate your gum tissue if they're too stiff or uneven.

5 Signs It’s Time for a New Toothbrush

Here’s how to know when it’s time to toss your current brush and pick up a new one:

1. The bristles are frayed, bent, or splayed out: If your brush looks like it's been through a blender, it’s no longer doing its job. Frayed bristles can’t clean properly — especially along the gumline.
   
2. You’ve been sick: After an illness, it’s a good idea to replace your toothbrush to avoid reintroducing germs into your mouth — especially with viral infections like the flu or COVID-19.
   
3. You notice buildup despite brushing: If your teeth still feel fuzzy or look dull after brushing, your toothbrush may be past its prime.
   
4. It has a bad smell or discoloration: Bacteria can build up in the bristles over time. If your brush smells off or looks stained even after rinsing, replace it.
   
5. You’ve had it longer than 4 months: Even if it still “looks okay,” your brush likely isn’t performing as well as it could. Set a reminder to replace it at least 3–4 times a year.

Manual vs. Electric Toothbrushes — Do the Rules Change?

For electric toothbrushes, the same general rule applies: replace the brush head every 3 months, or sooner if the bristles are worn.

Many electric brushes have indicator bristles that fade over time — a helpful visual cue that it’s time for a replacement. Regardless of the type, the goal is the same: use a brush that can thoroughly clean all surfaces of your teeth and support gum health.

Brushing Is Only One Part of the Equation

While your toothbrush is important, it’s just one part of maintaining a healthy smile. Be sure to:

• Brush twice daily for two minutes
  
• Use fluoride toothpaste
  
• Floss once a day
  
• Visit your dentist every six months for a professional cleaning and exam

If it’s been a while since your last checkup or you’re concerned about gum sensitivity, plaque buildup, or oral hygiene, we’d love to help you get back on track.