When should you replace your toothbrush?

When should you replace your toothbrush

Replace your toothbrush or electric brush head about every three months, or sooner if the bristles are frayed, bent, or splayed. Worn bristles do not clean as predictably along the gumline and between tooth contours. It is also reasonable to replace a brush after illness, especially if it helps you reset your routine.

The three-month rule is a practical reminder, not a magic date. Some people need a new brush sooner because they press too hard, chew on bristles, wear orthodontic appliances, or brush more often because of specific dental instructions. Look at the side profile of the brush: if bristles fan outward or lose their original shape, they are no longer reaching surfaces the way they should. Rinse the brush well after use, shake off excess water, and store it upright where it can air-dry. Avoid keeping a damp brush sealed in a case every day, because moisture encourages buildup. If your brush looks worn after only a few weeks, treat that as a sign to reduce pressure rather than simply replacing it more often.

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Key Points

• Every three months is a good replacement reminder for most toothbrushes.
• Frayed or splayed bristles mean it is time sooner.
• Fast bristle wear often points to brushing too hard.
• Let the brush air-dry between uses when possible.
• Replace brush heads on electric brushes, not just manual toothbrushes.

What This Means for You

Put a reminder on your calendar or change brushes at the start of each season. Check the bristles whenever you clean the bathroom so replacement is based on wear, not memory alone. If every brush wears out quickly, ask for help adjusting pressure.

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