Find the right Interdental Brush size | TePe UK - Interdental Cleaning (2025)

How do I know which interdental brush size is right for me?

When choosing your correct size there are many considerations. Please know the best sizing recommendation is from your dental professional. Each space between your teeth may be different, so you might need multiple sizes. The bristles should fit snugly between the teeth and the wire should not touch either adjacent tooth. Do not force a brush into a space, and there should be no signs of pain, otherwise size down to a smaller size.

Interdental Brush Size Guide

1. Start with the smallest size

Look in the mirror and insert the brush between your teeth, close to the gums. Start with the smallest size and work your way up until you feel the brush bristles engage the tooth surface and the gum tissue. The brush should have a snug fit but the wire, although plastic coated, shouldn’t touch the sides of the teeth or the gums. Never force the brush into a space.

2. Brush to its full length

Once inserted, move the interdental brush to its full length back and forth about 2-3 times. Make sure to clean all your spaces once a day.

3. Different gaps need different sizes

You are likely to need two-three different sizes, or the combination of one-two brushes and floss – it all depends on your spaces which normally vary throughout your mouth.

4. Your gums can feel sore and bleed

If you haven’t cleaned between your teeth in a while, your gums can feel sore and bleed when you start cleaning. Don’t stop – bleeding is a sign of inflammation caused by plaque, so it’s important to keep cleaning every day.

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