TePe Interdental Brush Sizes: Pink, Blue, Purple Guide
By Oral Health Care &lnterdental Brush- | Published: 2026-10-23
Category: Buying Guides
Confused by TePe color codes? This guide explains the Pink (0.4mm), Blue (0.6mm), and Purple sizes, helping you choose the right interdental brush for your gaps.
Quick answer
Pick TePe Pink (0.4mm) for very tight gaps, Blue (0.6mm) for average gaps, and Purple for slightly wider gaps. Use the color code as your size guide.
Why size matters for interdental brushes
Using the wrong size can be ineffective or uncomfortable. A brush that's too small won't remove plaque; one that's too large can hurt gums. TePe's color system makes it simple: each color corresponds to a specific ISO diameter, so you can match the brush to your tooth gaps.
Trade-offs with size selection
If you have multiple gap sizes in your mouth, you may need more than one size. The Pink (0.4mm) is the smallest and may bend easily with heavy use. The Blue (0.6mm) is a popular middle ground, but it won't fit very tight or very wide spaces. The Purple size offers a balance for medium-to-slightly-wide gaps but is not for extremely wide ones.
How to choose the right size
- Check your gap size: Gently insert the smallest brush (Pink, 0.4mm) between two teeth. If it slides in with slight resistance, it's a good fit. If it's too loose, try the next size up (Blue, 0.6mm). If it won't go in, use a smaller size.
- Match the color code: TePe uses a consistent color system: Pink = 0.4mm (ISO 0), Blue = 0.6mm (ISO 3), Purple = slightly larger. Remember the color you need for each gap. Write down the colors you use for each gap to simplify reordering.
- Consider a multi-pack: If you need more than one size, buying a carton pack (like the Purple carton pack) can be cost-effective for your most common size.
Product facts
- TePe® Interdental Brushes Original Pink - 0.4 mm (ISO 0): TePe Original Interdental Brushes in Pink (0.4mm, ISO 0) have a straight brush head and short handle, available in 9 color-coded sizes. This is the best choice for tight gaps where a regular brush can't reach, but it may require gentle handling to avoid bending.
TePe® Interdental Brushes Original Pink - 0.4 mm (ISO 0) - TePe® Interdental Brushes Original Blue - 0.6 mm (ISO 3): TePe Original Interdental Brushes in Blue (0.6mm, ISO 3) also feature a straight brush head and short handle, part of the same 9-size range. It's a versatile size for average gaps, offering a good balance of cleaning power and comfort for most users.
TePe® Interdental Brushes Original Blue - 0.6 mm (ISO 3)
Who should use which size?
Best for
- People with very tight gaps should start with TePe Pink (0.4mm).
- Those with average gaps will find TePe Blue (0.6mm) a comfortable daily choice.
Not for
- If you have wide gaps (larger than 0.6mm), the Pink and Blue sizes will be too small. Consider TePe Purple or larger sizes.
