ProTaper Next® X3, 31mm (3)

ProTaper Next® X3 · 030/.07v · 31 mm · pack of 3

ShapingCurved canalsM-Wire® NiTiSterile, single useVariable taper

When the ISO 25 gauge is loose: X3 at 31 mm

X3 is the first step past X2, for a foramen an ISO 25 hand file leaves loose. ISO 030 on a .07 variable taper – the steepest taper in the range. This is the 31 mm version, for long roots a 25 mm file will not take to working length.

Speed and torque from the June 2025 EU IFU, which supersedes the wider range quoted in the 2017 brochure.

This pack: ProTaper Next® X3 Rotary File, 31 mm (Pack of 3) · sterile, single use
Dentsply Sirona · legal manufacturer Dentsply DeTrey GmbH, Konstanz, Germany; UK representative Dentsply IH Ltd, Stonehouse (2025 IFU)

Key features

›  Off-centred rectangular section. Dentsply Sirona: “The patented design’s axis of rotation differs from the center of mass. As a result, only two points of the rectangular cross section touch the canal wall at a time.”
›  The swaggering movement. That offset gives the file what they call a snake-like swaggering movement through the canal, and “enlarged space for debris hauling”.
›  M-Wire® NiTi. Their proprietary thermal treatment: “improves file flexibility, while still retaining cutting efficiency”.
›  Variable taper. The taper eases coronally rather than running constant, so one instrument does the work of a crown-down step.
›  Sterile and single use. The 2025 IFU states STERILE – STERILIZED BY RADIATION, and that the instruments “are single use devices and cannot be reused”.

Questions we get asked

Do I need a glide path first?
Yes – the IFU has you scout with small hand files, confirm working length and patency, and expand the glide path by hand or with a mechanical glide path file before X1. ProGlider®, 31 mm · a single 016/.02v file, and the instrument the IFU sequence expects before X1.

What settings?
300 rpm at 2–3 Ncm, from the June 2025 IFU. The 2017 brochure quotes 2–5.2 Ncm across the whole family and a US technique card quotes 4–5.2 Ncm; we follow the current IFU. Both X-Smart® Pro+ and X-Smart® Pro will run it.

Can they be re-used?
No. The IFU is explicit: single use devices that cannot be reused, supplied sterile, sterilised by radiation. Re-use raises the risk of cross-contamination and of breakage.

Which gutta percha and paper points?
The matched ones: Conform Fit® gutta percha, X3, and ProTaper Next® paper points, X3 · or the X2–X3 box. A variable-taper preparation wants a cone cut to the same shape.

Complete the case

Downloads

›  ProTaper Next® brochure (PDF, 2.0 MB, Dentsply Sirona) – the range brochure. Still the current revision – 01/2017, updated 11/2017

Tip sizes and tapers are Dentsply Sirona’s, from the ProTaper Next® tip card and confirmed in the June 2025 IFU. Speed and torque are from that IFU; the 2017 brochure quotes a wider 2–5.2 Ncm range across the whole family and a US technique card quotes 4–5.2 Ncm, so we follow the current regulatory document. X2 red and X3 blue are Dentsply Sirona’s own, from the Conform Fit® gutta-percha brochure; the other colour rings are as they appear on Dentsply Sirona’s product renders, and are a recognition aid rather than a published specification. Studies named above are laboratory work on extracted teeth and are not clinical outcome data.

REF A080323100303 · ProTaper Next® X3, 31 mm, pack of 3 · sterile, single use · also in 21 mm and 25 mm