# NIC U-Series vs ProTaper Gold

NIC Dental (Shenzhen Superline Technology) · Dentsply Sirona

[TR](https://endo-guide.app/tr/compare/nic-u-series-vs-protaper-gold)

## NIC® U-Series

NIC Dental (Shenzhen Superline Technology)

The Familiar Classic

[View protocol →](https://endo-guide.app/system/nic-u-series)

## ProTaper Gold®

Dentsply Sirona

The Gold Standard

[View protocol →](https://endo-guide.app/system/protaper-gold)

Clinical Tip

NIC positions U-Series as its alternative for ProTaper users — matching SX–F5 sizing with per-wire settings (U+ 300 RPM graduated torque, U-Blue 400 RPM), documented by the manufacturer's IFU, catalog, and direct confirmations only. Choose ProTaper Gold for the extensively studied original with published variable-taper design, current versioned IFUs, and independent performance data.

## Specifications

| — | NIC U-Series | ProTaper Gold |
| --- | --- | --- |
| Manufacturer | NIC Dental (Shenzhen Superline Technology) | Dentsply Sirona |
| Alloy | MaxTech NiTi (Untreated / Gold / Blue Tiers) | Gold Heat-Treated NiTi |
| Heat Treatment | Blue Heat-Treated | Gold Heat-Treated |
| Motion | Continuous Rotation | Continuous Rotation |
| Files | 24 | 8 |
| Taper | Variable | Variable |
| Cross-section | Convex triangular | Convex triangular, Concave triangular |
| Speed | 250–400 RPM | 300 RPM |
| Torque | 1–5 Ncm | 1.5–5 Ncm |
| Use Type | Single-use | Reusable (limited) |

## Best For

NIC U-Series

familiar SX–F5 graduated shaping sequenceIFU-defined technique with built-in apical gauginguntreated, gold, or blue wire tiers chosen per case

ProTaper Gold

versatile multi-file sequencecomplex anatomygraduated shaping

## Key Features

NIC U-Series

Eight-size SX–F5 convex-triangle crown-down sequence in three MaxTech wire tiers with per-wire motor settings — U+ (gold) at 300 RPM with graduated 5.0/1.5/3.0 Ncm torque, U-Blue at 400 RPM, untreated U at 250-300 RPM

ProTaper Gold

Variable taper design with progressive engagement

[NIC U-Series Full protocol](https://endo-guide.app/system/nic-u-series)[ProTaper Gold Full protocol](https://endo-guide.app/system/protaper-gold)

## Related Clinical Links

Manufacturer pages

[NIC Dental Systems](https://endo-guide.app/manufacturer/nic)[Dentsply Sirona Systems](https://endo-guide.app/manufacturer/dentsply-sirona)

Motion categories

[Continuous Rotation](https://endo-guide.app/category/continuous-rotation)

Related comparisons

[ProTaper Gold vs ProTaper Ultimate](https://endo-guide.app/compare/protaper-gold-vs-protaper-ultimate)[ProTaper Gold vs ProTaper Next](https://endo-guide.app/compare/protaper-gold-vs-protaper-next)[ProTaper Gold vs TruNatomy](https://endo-guide.app/compare/protaper-gold-vs-trunatomy)

Independent educational reference. Always consult official manufacturer Instructions for Use (DFU) before clinical procedures.

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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.

[About the author](https://endo-guide.app/about)[Editorial policy](https://endo-guide.app/editorial-policy)[Clinical profile](https://drleventyuksel.com/)

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