Oral Health Care &lnterdental Brush-

TePe Interdental Brush Sizes Explained: From 0.4mm to 1.3mm

TePe Interdental Brush Sizes Explained: From 0.4mm to 1.3mm

By Oral Health Care &lnterdental Brush- | Published: 2026-08-02

Category: Buying Guides

Learn how to choose the right TePe interdental brush size with our detailed guide covering 0.4mm to 1.3mm, including a size chart and tips.

Choosing the right interdental brush size can feel overwhelming, especially with so many options available. TePe, a leading brand in interdental care, offers brushes ranging from 0.4mm to 1.3mm to fit different gaps between teeth. This guide will help you understand the TePe size chart and pick the perfect brush for your needs.

Whether you're new to interdental cleaning or looking to switch sizes, knowing how to measure your gaps and match them to TePe's color-coded system is essential. In this article, we break down each size, explain the ISO standards, and provide practical tips for selecting the right brush.

Why Interdental Brush Size Matters

Interdental brushes are designed to clean the spaces between your teeth that a regular toothbrush can't reach. Using the wrong size can either be ineffective or cause damage to your gums. A brush that is too small won't clean properly, while one that is too large can hurt your gums and lead to bleeding.

TePe offers a range of sizes with color-coded handles and wire diameters measured in millimeters. The size you need depends on the gap between your teeth, which can vary across your mouth. That's why many people use multiple sizes for different areas.

  • Always start with the smallest size and gradually increase until you feel slight resistance.
  • If you're unsure, consult your dentist or dental hygienist for a professional assessment.

Understanding the TePe Size Chart

TePe uses a color-coding system to indicate brush sizes, making it easy to identify the right one. The sizes range from 0.4mm (pink) to 1.3mm (brown), with each color corresponding to a specific wire diameter. For example, the TePe® Interdental Brushes Extra Soft Red - 0.5 mm (ISO 2) is perfect for very narrow gaps, while the TePe® Interdental Brushes Original Blue - Carton Pack (0.8mm) suits medium gaps.

TePe® Interdental Brushes Original Blue - Carton Pack
TePe® Interdental Brushes Original Blue - Carton Pack

Here is a quick reference table for TePe sizes:

  • 0.4mm (Pink) – ISO 0 – for very tight gaps
  • 0.5mm (Red) – ISO 2 – for tight gaps
  • 0.6mm (Yellow) – ISO 3 – for narrow gaps
  • 0.7mm (Yellow) – ISO 4 – for small gaps
  • 0.8mm (Green) – ISO 5 – for medium gaps
  • 0.9mm (Blue) – ISO 6 – for medium-large gaps
  • 1.1mm (Purple) – ISO 6 – for large gaps
  • 1.3mm (Brown) – ISO 7 – for very large gaps

How to Determine Your Size

The best way to find your size is to try different brushes. Start with a small size like the TePe® Interdental Brushes Extra Soft Red - 0.5 mm (ISO 2) and insert it gently between your teeth. If it slides in without resistance, try the next size up. The right size should fit snugly but not force your gums apart.

You can also use a dental probe or ask your dentist to measure your gaps. Many dental professionals recommend using interdental brushes as part of your daily routine, and they can help you choose the correct sizes.

  • Check the ISO size printed on the package – it corresponds to the wire diameter.
  • If you have gaps of different sizes, consider a mixed pack to cover all areas.

TePe Size Options: From 0.4mm to 1.3mm

TePe offers a wide range of brushes to suit every gap size. For very tight spaces, the 0.4mm and 0.5mm brushes are ideal. The TePe® Interdental Brushes Extra Soft Red - 0.5 mm (ISO 2) is a popular choice for beginners. For medium gaps, the TePe® Interdental Brushes Original Green - 0.8 mm (ISO 5) provides effective cleaning. If you have larger gaps, the TePe® Interdental Brushes Extra Soft Purple - 1.1 mm (ISO 6) offers a softer option for sensitive gums.

It's important to note that the 'Extra Soft' versions have a gentler feel, making them suitable for people with sensitive gums or implants. The 'Original' versions have a standard stiffness and are great for everyday use.

Tips for Using Interdental Brushes Effectively

To get the most out of your interdental brush, use it once a day, preferably before brushing your teeth. Gently insert the brush between your teeth and move it back and forth a few times. Avoid forcing it – the brush should slide in with minimal pressure.

Rinse the brush after each use and replace it when the bristles wear out, usually every 1-2 weeks. Using the correct size not only ensures effective cleaning but also prevents gum irritation.

  • Don't forget the back teeth – use a mirror to guide you.
  • If you experience bleeding, it may be due to gum inflammation; consult your dentist if it persists.

Choosing the right TePe interdental brush size is key to maintaining healthy gums and preventing tooth decay. By understanding the size chart and trying different options, you can find the perfect fit for your mouth. Start with a smaller size and work your way up until you feel the right resistance. For a convenient starting point, consider the TePe® Interdental Brushes Original Green - 0.8 mm (ISO 5) – a versatile size for many users. Remember, consistency is more important than perfection, so make interdental cleaning a daily habit.

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