One Shape®
Micro-Mega (COLTENE)
One Shape®
Micro-Mega (COLTENE)
Single-file continuous rotation with variable asymmetric cross-section (3 to 2 cutting edges) and ABC anti-breakage control
Continuous Rotation · Conventional NiTi
- RPM
- Ncm2.5
- File
- 1
- Verified
Specifications
Tap icons for term definitions
| File | Tip | Taper | SpeedRPM | TorqueNcm | Role |
|---|---|---|---|---|---|
Diameter at the file tip (D0). Larger tips shape wider canals. | |||||
How much the file widens per mm. Higher taper = more aggressive cutting. | |||||
Rotational speed (RPM). Follow manufacturer settings to prevent file breakage. | |||||
Rotational force limit (Ncm). Prevents file fracture by auto-reversing when resistance is too high. | |||||
25/.06red | 0.25 | 6% | 350-450 | 2.5 | Shaping |
Clinical Tips
- One Shape uses 350-450 RPM with a maximum torque of 2.5 Ncm (per ENDObook). Any continuous-rotation endodontic motor may be used — no specific motor is needed.
- The variable asymmetric cross-section (3 cutting edges apically, transitioning to 2 coronally) provides optimal cutting in three canal zones and reduces the screwing effect.
- ABC (Anti Breakage Control): Micro-Mega describes the instrument as designed to unwind to avoid separation (per brochure); discard any instrument that shows signs of unwinding (per ENDObook).
- Technique is progressive: advance to 2/3 WL first, then to WL minus 3 mm, then to full WL — withdrawing, cleaning, irrigating, and checking patency between each stage.
- In tight or curved canals, use slightly longer in-and-out strokes for debris removal.
- G-Files (G1 + G2) are the recommended mechanical glide path instruments when a #10 K-file cannot reach estimated working length.
- Single-use instrument — recommended for treatment of one tooth only (per brochure).
Warnings
- Single-use, sterile instrument — do not reprocess or reuse
- Do not use without first establishing a glide path to at least #15 K-file
- Never force the instrument apically — use light in-and-out movements only
- If significant resistance is encountered, withdraw, clean, irrigate, and recheck patency before continuing
- Contains nickel-titanium — do not use on patients with known nickel allergy
- No manufacturer IFU is publicly available; speed and torque sourced from manufacturer ENDObook (350-450 RPM, max 2.5 Ncm)
Obturation Techniques
Single cone, warm vertical, carrier-based & lateral compaction
Protocol
01Glide Path1
02Shaping1
03Finishing1
Related Systems
Manufacturer page
Micro-Mega (COLTENE) SystemsOther continuous rotation systems
Motion category
Continuous RotationAlloy
Conventional NiTiCollections
Clinical guides
Frequently Asked Questions
What alloy is One Shape made from?
What alloy is One Shape made from?
Answer
One Shape® is manufactured from Conventional NiTi.
How many files are in the One Shape sequence?
How many files are in the One Shape sequence?
Answer
The One Shape® system includes 1 file: 25/.06.
What motion type does One Shape use?
What motion type does One Shape use?
Answer
One Shape® uses continuous rotation motion.
What cases is One Shape best for?
What cases is One Shape best for?
Answer
One Shape® is best suited for: single-file rotary simplicity, efficient continuous rotation shaping, cost-effective one-instrument workflow.
What speed and torque settings are recommended for One Shape?
What speed and torque settings are recommended for One Shape?
Answer
Recommended settings: 350-450 RPM and 2.5 Ncm across the file sequence (refer to official DFU for full per-file parameters).
Reviewed by
Uzm. Dt. Levent Yüksel
DDS · Endodontist
Endodontist — DDS, Hacettepe University; endodontics specialty training, Ankara University. 10+ years of clinical experience. Sole author and reviewer of EndoGuide content.
Cite this page
Citation formats for the manufacturer-verified specification data on this page.
AMA
Yüksel L. One Shape: sequence, speed and torque settings. EndoGuide. Updated: 2026-10-03. https://endo-guide.app/system/one-shape
BibTeX
@misc{endoguide-one-shape,
author = {Yüksel, Levent},
title = {One Shape: sequence, speed and torque settings},
howpublished = {\url{https://endo-guide.app/system/one-shape}},
year = {2026},
note = {EndoGuide. Updated: 2026-10-03}
}Powered by:Uzm. Dt. Levent Yüksel
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