Does TePe Blue equal GUM Tight?

No equivalence was established. TePe publishes an ISO size and separate wire and PHD measurements. GUM Tight is its own named 872 size.

Why does TePe Blue have two different millimeter figures?

The TePe catalogue lists wire size and passage hole diameter separately. For Blue they are 0.6 mm and 1.1 mm. They do not mean two versions of the same pack.

Should I force a tight brush through?

No. TePe says never to force a brush into a space. Ask a dentist or hygienist for a fit and technique demonstration.

Does this replace the dental floss guide?

No. These picks are bristled interdental brushes. String floss is a different tool, and your dental professional can help select appropriate tools for different spaces.

Home / Personal care

Choose an interdental brush that fits each tooth gap

By the Life in Good Form editors. Updated 2026-10-17.

We research products from makers' specs and health sources; we do not run hands-on tests. Links to Amazon may earn us a commission at no cost to you. How this works.

Quick answerChoose TePe Original Blue 132440 when your dental professional has identified its 0.6 mm wire size, ISO 3, for the relevant gaps. Compare GUM Proxabrush Go Betweens Tight 872 when that named size fits your needs and you prefer its flexible handle and bendable neck. These names do not establish equal brush sizes. Get a fit recommendation before buying a bulk pack or forcing a brush into a tight gap.

Our picks at a glance

TePe Original Blue 132440, 25 pack. Best for: Replacing a professionally selected Original Blue brush. See options on Amazon
GUM Proxabrush Go Betweens Tight 872. Best for: A named Tight size with flexible handling features. See options on Amazon

Compare the picks and what to watch out for

Get the fit right before choosing a pack

A useful replacement starts with the brush that your dentist or hygienist fitted, including its brand, range and size. If you have not had a fit demonstration, ask for one. Different gaps may need different choices. Buying the smallest looking brush or the pack with the most pieces leaves the main decision unresolved.

TePe advises choosing a brush that fits snugly and says never to force one into a space. Keep that advice attached to the purchase. If a new size is painful or difficult to insert, do not turn persistence into a sizing method. Ask a dental professional to check your technique and fit, especially around restorations or appliances.

Do not convert colors or measurements by guesswork

Pick	Maker size	Check
TePe Blue	ISO 3	0.6 mm wire
GUM Tight	872	Named size

TePe publishes both a wire size and a PHD measurement. Its catalogue gives the Blue brush a 0.6 mm wire and 1.1 mm PHD. Those describe different aspects of the same size. Do not treat either as a measurement you can simply compare with a visible tooth gap in a mirror.

GUM lists Tight among its own named sizes. We have not established a direct equivalence between it and TePe Blue. Choose from a demonstrated fit, not matching colors, a shared tight label or a numerical figure lifted from a different measurement system. Keep the current package so that the next purchase can identify the same brush.

Choose the handle for the places you need to reach

TePe Original uses a straight brush head and short handle. GUM describes a flexible rubberized handle and bendable neck for its Go Betweens cleaners. These are documented handling differences to consider. We have not compared grip, comfort or access in use, so neither gets a universal easier to use recommendation.

Consider where you struggled with a previous brush. Difficulty reaching a rear gap is a different question from a brush that will not fit into the gap at all. Take the exact brush to a hygienist and ask for a demonstration. A handle change may suit your technique, but it does not establish that a different wire or bristle size is appropriate.

Match the product range and the coating

The Original TePe range is separate from Angle and Extra Soft products. GUM Go Betweens cleaners are also separate from its handle refill system and soft rubber picks. Search listings can place these nearby. Check the full range name instead of ordering only from a familiar logo or a similar pack color.

The maker documentation describes coated wire for these brushes. If you have braces, implants or other dental work, still ask your dental professional about the specific tool and technique. A coating claim does not replace that advice or mean a brush cannot become damaged. Follow the exact maker instructions for inspecting, cleaning and replacing the delivered brush.

Keep brushes distinct from string floss

The separate dental floss guide covers string, tape and other floss choices. This page compares wire and bristle interdental brushes. The decision is about a tool that fits a particular space and can be handled properly. Do not replace a dental professional's recommendation merely because a product has a stronger marketing phrase.

Daily cleaning between teeth is part of oral care, but the appropriate method depends on your mouth and ability to use it. Neither a travel cap nor a large pack establishes a clinical outcome. Seek advice for persistent bleeding, pain or a change in fit. This comparison does not diagnose why a gap feels different or prescribe treatment.

Order the precise replacement rather than a similar color

The TePe maker page and catalogue connect code 132440 with Original Blue in a 25 pack. The selected GUM marketplace listing uses 872ECM4 for a multipack of Tight brushes. Its maker documents identify the 872 brush size; the retail suffix and outer pack quantity are listing details. Check both the size and the actual number of packs.

Choose a small initial quantity if fit is still uncertain, then save the complete product identification once your dental professional confirms it. Read the current seller, condition and delivered package. Full warranty or satisfaction guarantee terms were not verified for this comparison. No clinical superiority or equal size conversion is implied by the order of these picks.

What to look for when you buy

TePe Original Blue 132440, 25 pack

Best for: Replacing a professionally selected Original Blue brush

The maker page identifies 132440 as its 25 pack. The TePe catalogue lists Blue as ISO 3, with 0.6 mm wire size and 1.1 mm PHD size.

Watch out: The wire figure and passage hole diameter are different measurements. Blue in another brand is not an equivalent size.

See options on Amazon

GUM Proxabrush Go Betweens Tight 872

Best for: A named Tight size with flexible handling features

Sunstar identifies Tight as 872, with triangular bristles, coated wire, a bendable neck and a flexible rubberized handle. Its catalogue separately names the 872 size.

Watch out: Tight is a maker size name, not a cross brand conversion. Verify the retail multipack quantity and that the delivered pack says Tight.