What alloy is TruNatomy made from?

TruNatomy® is manufactured from Heat-Treated NiTi with other heat treatment.

How many files are in the TruNatomy sequence?

The TruNatomy® system includes 6 files: Orifice Modifier, Glider, Small, Prime, Medium, Large.

What motion type does TruNatomy use?

TruNatomy® uses continuous rotation motion.

What cases is TruNatomy best for?

TruNatomy® is best suited for: dentin preservation, conservative access, minimally invasive.

What speed and torque settings are recommended for TruNatomy?

Recommended settings: 500 RPM and 1.5 Ncm across the file sequence (refer to official DFU for full per-file parameters).

TruNatomy®

Dentsply Sirona

Continuous Rotation

TruNatomy®

Slim 0.8mm MFD with off-centered parallelogram cross-section preserves peri-cervical dentin while maintaining shaping efficiency

AlloyHeat-Treated NiTiFile6VerifiedFeb 2026

Specifications

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Tip	Taper	Speed rpm	Torque Ncm
0.20	8%	500	1.5
0.17	2%v	500	1.5
0.20	4%v (regressive)	500	1.5
0.26	4%v (regressive)	500	1.5
0.36	3%v (regressive)	500	1.5
0.46	2%v (regressive)	500	1.5

Clinical Tips

All files operate at same settings: 500 RPM and 1.5 Ncm - no need to change between files (per IFU)

0.8mm MFD (vs up to 1.2mm for most variable-tapered files) preserves peri-cervical structural dentin (per product page)

9.5mm handle (shortest on market) plus pre-curving capability enables molar access with contra-angle micro heads (per product page)

Regressive taper on shaping files — all shaping files have same coronal diameter, differ only at apical third (per Scientific Manual)

Conservative Endodontic Cavity (CEC) is recommended — prepare access sufficient to reveal all root canal orifices (per 2025 IFU). Note: GuttaCore tip card recommends confirming straight-line access for obturation.

Proprietary post-machining heat treatment — files reach martensitic phase at body temperature for enhanced flexibility (per Scientific Manual)

Off-centered cross-section on shaping files reduces stress during cutting and increases debris removal space (per Scientific Manual)

Files may appear slightly curved from manufacturing — this is normal, not a defect; do not need to straighten before use (per IFU)

For shaping extremely curved canals, use file for single canal only to reduce breakage risk (per IFU)

TruNatomy Prime showed improved cyclic fatigue resistance vs ProTaper Next X2 — Dentsply brochure reports 3.5x improvement (bench data); Peters et al. 2020 (PMID 32389382) supports directional claim in vitro

Warnings

Single use only — do not resterilize or reuse (per IFU)
Contains nickel-titanium — allergic or toxic reactions may occur in sensitive patients (per IFU)
Do not fully immerse in NaOCl — only working part in max 5% concentration (per 2025 IFU)
Do not use in canals with abrupt apical curvature — use pre-curved hand files instead (per IFU)
Inspect for distortion, unwinding, or straightening before and after use — discard if deformation noted
Do not exceed recommended speed (500 RPM) and torque (1.5 Ncm)
Always maintain apical patency during shaping — irrigate, recapitulate with #10 K-file between files
Do not use brushing action with TruNatomy files (per IFU)