Buccal Tubes

Buccal Tubes — Bondable, Weldable, Single-to-Triple, Convertible and Headgear Molar Attachments

At the back of a fixed brace the archwire has to end somewhere and be held firmly, and that job belongs to the buccal tube — a small steel attachment fixed to the cheek side of a molar. It takes the end of the wire in its slot, gives the elastics and hooks something to pull against, and turns the molar into the anchor the rest of the arch works off. Most are bonded straight onto enamel now, though a tube welded to a molar band is still used where the bond would not hold or the anchorage has to be maximal. The slot count, the convertible cap, and the prescription built into the base are what separate one tube from the next.

Types of buccal tubes

Bondable tubes

A bondable tube fixes straight to the molar enamel on a mesh base, which skips the separate band, seats in one step, and sits more comfortably against the cheek. The U Ortho Bondable Buccal Tubes - 1st Molar MBT 0.022 is a one-piece tube made in the U1, U2, and U3 base contours.

Weldable (banded) tubes

A tube welded to a stainless band is the older route, still chosen when the enamel will not hold a bond or the case needs the firmest possible molar anchorage, since the band grips the whole crown rather than a single bonded pad.

Single, double, triple and convertible slots

The slot count decides what the tube can carry: a single takes just the archwire, a double or triple adds slots for a facebow or an auxiliary wire, and a convertible tube has a cap that lifts off to turn the tube into an open bracket. UU Ortho and other makers carry these designs in MBT 0.022.

Headgear and auxiliary tubes

A headgear tube carries a wider 0.045″ round slot that accepts an extraoral facebow for Class II mechanics, kept separate from the main archwire slot. OSL supplies stainless headgear tubes for these appliances.

Bulk bondable kits

For a busy practice the bondable tubes also come in 20- to 200-set boxes — Waldent and OrthoMetric pack them this way — which drops the cost per case and keeps a colour-coded matched set on the bench.

When buccal tubes are used

A buccal tube goes on wherever a molar has to terminate and anchor the archwire in fixed treatment:

• As the terminal attachment on first and second molars in fixed appliance therapy
• To engage the archwire under control during alignment and space closure
• To hook elastics, a facebow, or headgear onto the molar
• For posterior anchorage in full-arch comprehensive treatment
• In place of a banded tube, for quicker seating and better comfort
• Alongside the brackets on the rest of the arch, on the same prescription

How to choose buccal tubes

1. Bonded or banded — a bondable tube for speed and comfort, a weldable tube on a band where the bond is unreliable or anchorage must be maximal.
2. Slot count — single for the archwire alone, double or triple where a facebow or auxiliary also has to engage.
3. Tooth and arch — pick the tube marked for the 1st or 2nd molar and the right quadrant, since the base contour and slot angle differ by position (U1, U2, U3 / L1, L2).
4. Prescription and slot — match the tube's MBT or Roth values and its .022 or .018 slot to the brackets already on the arch.
5. Convertible cap — choose convertible where you may later remove the cap and treat the molar as an open bracket.
6. Pack size — single tubes to replace a lost one, bulk boxes to bring down the per-case cost in a high-volume practice.

Buccal tube brands on Dentalkart

U Ortho and UU Ortho are the high-volume bondable-tube makers here, both MIM-formed with funnelled slot entrances and an 80-gauge mesh base for bond strength, in the U1, U2, and U3 contours.

Waldent and OrthoMetric supply the bulk bondable boxes for a heavy caseload, and OSL covers the 0.045″ stainless headgear tubes for extraoral appliances that round out the molar set-up.

Why buy buccal tubes from Dentalkart

A buccal tube fails in one of two ways — it works loose, or its slot sits at the wrong angle — and both trace back to how the base and slot are made. The tubes here are MIM-formed with an 80-gauge mesh base for bond strength and a slot held to its stated MBT or Roth figures, in the U1, U2, and U3 contours that seat flush on each molar. Buying them next to the brackets and archwires already in use means the molar attachment runs the same prescription as the rest of the arch, available as single tubes or in bulk boxes to suit the caseload.

What does a buccal tube do?

A buccal tube is the anchor at the back of a fixed brace. Fixed to the cheek side of a molar, it holds the end of the archwire in its slot and gives elastics, hooks, headgear, and other auxiliaries a fixed point to pull against, so the molar becomes the stable base the rest of the arch is moved against.

Bonded or banded — when is each right?

A bonded tube is the everyday choice: it fixes straight to enamel, seats in one visit, and is kinder on the cheek. A banded tube — welded to a steel ring around the molar — is kept for cases where the enamel will not bond reliably or where the mechanics demand the firmest anchorage, because the band grips the entire crown.

What do the U1, L1, U2 markings on a tube mean?

They tell you which tooth and quadrant the tube is shaped for: "U" is upper, "L" is lower, and the number is the position. Because the molar surface and the slot angle differ by site, a tube marked for that position seats flush and lines its slot up with the archwire path, instead of being forced onto the wrong contour.

Why do buccal tubes come loose, and how do I prevent it?

Most failures are a bonding problem, not a tube problem — saliva on the etched enamel, too little adhesive, an under-cured bond, or an occlusal contact knocking the tube each time the patient bites. Good isolation, a clean etch, enough adhesive, a full cure, and clearing any high contact keep a bonded tube in place for the whole treatment.

What is a convertible buccal tube for?

A convertible tube has a removable cap over the slot. Left on, it works as a normal tube; lifted off, the slot opens up and the molar can be treated like a bracket, which helps when you need direct access to level or finish that tooth late in treatment. A non-convertible tube keeps the slot permanently enclosed.