Use SX to create early space and reduce coronal interference before moving deeper.
PT Technique Guide
Technique guide
TransformX™ PT is designed for clinicians who use a ProTaper-style progressive shaping workflow and want to preserve familiar sequence logic while improving control through demanding anatomy.
Clinical aimShape progressively without losing control.
The PT sequence moves from coronal shaping to apical finishing while preserving working-length discipline and canal centering.
System logicOpen coronally. Progress carefully. Finish only as anatomy permits.
TransformX™ PT keeps recognisable SX, S1, S2, and F-file sequence logic with added control from Transform Technology and Avatar Tip.
Introduction
Section titled “Introduction”Progressive taper systems are useful because they create space in a staged way. The clinical challenge is to avoid letting coronal efficiency become apical aggression, particularly when curvature or resistance increases.
Sequence principle
PT technique works best when each file has a defined role. Do not ask shaping files to negotiate anatomy that has not first been scouted, irrigated, and confirmed.
Clinical Problem
Section titled “Clinical Problem”Progressive taper systems need to shape efficiently from coronal access through apical finishing. Risk increases when curvature, resistance, or incomplete glide path preparation places too much stress on the active file.
| Clinical risk | Control response |
|---|---|
| Coronal interferenceRestricted straight-line access | Use SX conservatively to improve access without forcing apically. |
| Mid-root resistanceCanal shape not yet developed | Progress S1 and S2 gradually with irrigation and recapitulation between files. |
| Apical over-engagementFinal files used beyond anatomy | Select F1, F2, or F3 according to gauging, anatomy, and preparation objective. |
TransformX™ Solution
Section titled “TransformX™ Solution”TransformX™ PT keeps the recognisable progressive sequence while supporting safer advancement through changing canal demands.
Use S1 and S2 with frequent irrigation and recapitulation to progress toward working length.
Finish with F1, F2, or F3 according to apical anatomy, gauging, and clinical objective.
Prerequisites
Section titled “Prerequisites”Access cavity established
Working length determined
Patency confirmed
Glide path confirmed to working length
Irrigation strategy ready
Final size selected by anatomy, not habit
Motor Settings
Section titled “Motor Settings”| Step | File | Speed | Torque | Purpose |
|---|---|---|---|---|
| 1 | SX | 300 RPM | 3.0 Ncm | Coronal shaping |
| 2 | S1, S2 | 300 RPM | 3.0 Ncm | Middle third shaping |
| 3 | F1, F2, F3 | 300 RPM | 3.0 Ncm | Apical finishing |
Step-by-Step Sequence
Section titled “Step-by-Step Sequence”Coronal shaping
Use SX at 300 RPM and 3.0 Ncm. Create initial coronal flare, improve access to the mid-root, then irrigate thoroughly.
Middle third shaping
Use S1 and S2 at 300 RPM and 3.0 Ncm. Shape to resistance, irrigate, recapitulate, and re-irrigate before progressing.
Apical finishing
Use F1 to working length, then select F2 or F3 only when anatomy and gauging support a larger final preparation.
Key Features
Section titled “Key Features”| File | Tip size | Taper | Use case |
|---|---|---|---|
| SX | 19 | Progressive | Coronal flaring |
| S1 | 17 | Progressive | Initial shaping |
| S2 | 20 | Progressive | Full-length shaping |
| F1 | 20 | .07 | Small canals |
| F2 | 25 | .08 | Medium canals |
| F3 | 30 | .09 | Larger canals |
Clinical Benefits
Section titled “Clinical Benefits”Preserves familiar progressive taper logic
Supports controlled coronal-to-apical progression
Helps maintain centred preparation
Reduces abrupt wall engagement
Keeps motor settings simple
Improves confidence in curved anatomy