What alloy is ProTaper Ultimate made from?

ProTaper Ultimate™ is manufactured from M-Wire / Gold / Blue Heat-Treated NiTi with gold heat treatment.

How many files are in the ProTaper Ultimate sequence?

The ProTaper Ultimate™ system includes 8 files: Slider, SX, Shaper, F1, F2, F3, FX, FXL.

What motion type does ProTaper Ultimate use?

ProTaper Ultimate™ uses continuous rotation motion.

What cases is ProTaper Ultimate best for?

ProTaper Ultimate™ is best suited for: 5th generation ProTaper evolution, K-file free workflow, complex anatomy with manual fallback for severe curves.

What speed and torque settings are recommended for ProTaper Ultimate?

Recommended settings: 400 RPM and 4.0-5.2 Ncm across the file sequence (refer to official DFU for full per-file parameters).

ProTaper Ultimate™

Dentsply Sirona

Continuous Rotation

ProTaper Ultimate™

Slider-Shaper-Finishers concept with dual heat treatments: Gold for standard sequence, Blue for auxiliary finishers in large canals

AlloyM-Wire / Gold / Blue Heat-Treated NiTiFile8VerifiedFeb 2026

Specifications

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Tip	Taper	Speed rpm	Torque Ncm
0.16	2% (variable)	400	4.0-5.2
0.20	3% (variable)	400	4.0-5.2
0.20	4% (variable)	400	4.0-5.2
0.20	7% (variable)	400	4.0-5.2
0.25	8% (variable)	400	4.0-5.2
0.30	9% (variable)	400	4.0-5.2
0.35	12% (variable)	400	4.0-5.2
0.50	10% (variable)	400	4.0-5.2

Clinical Tips

Slider-first glide path: Slider can often be used without prior K-file (67% of cases per Dentsply user study). If Slider does not easily reach terminus, use a small SS hand file first, establish WL/patency, then retry Slider (per IFU)

Only one Shaper needed for coronal 2/3 enlargement

Triple heat treatment: M-Wire (Slider), Gold (Shaper/F1-F3), Blue (FX/FXL)

Blue heat treatment on FX/FXL: dedicated for large straight canals

Manufacturer reports 32% faster glide path and shaping vs ProGlider + PTG up to F2 (product page bench data, not independent clinical validation)

Manufacturer reports F1: +13% flexibility, +75% cyclic fatigue resistance vs PTG F1 (fact file bench data)

Manufacturer reports F2: +30% flexibility, +30% cyclic fatigue resistance vs PTG F2 (fact file bench data)

Manufacturer reports higher unwinding resistance vs previous generations (fact file bench data; Diaconu 2024 supports improved cyclic fatigue vs PTG F2 in vitro, PMID 38667542)

Use outward brushing motion away from furcation in irregular canals, or light inward pecking to advance

Dedicated hand-use version available for all PTU files with same technical features

Compatible with ProTaper Ultimate Conform Fit GP points and absorbent points

For extremely curved canals: use single canal per file and consider manual files in apical region (per IFU)

Warnings

Single-use only — do not reprocess or reuse
Contains nickel-titanium — allergic or toxic reactions may occur in sensitive patients (per IFU)
Discard if any unwinding, straightening, or stretching is observed
Do not fully immerse in NaOCl — only working part in max 5% concentration (per IFU)
FX and FXL are for large, straight canals only — do not use in curved canals
Inspect cutting flutes upon removal from every canal
Always reconfirm working length after shaping, especially in curved canals
In severe curvatures: machine-driven use may not be appropriate in abrupt apical curves — use pre-curved hand files apically (per IFU)