# NIC® W+

> Gold-Wire Reciprocation

- **Manufacturer:** NIC Dental (Shenzhen Superline Technology)
- **Motion:** Reciprocating
- **Alloy:** MaxTech 3.0 Gold Heat-Treated NiTi
- **Key feature:** Single-file reciprocating shaping on a WaveOne Gold-compatible 150°/30° program — four parallelogram shapers (20/.07 to 45/.05) plus a W+ Tunnel 15/.02 glide path file

## Specifications

| File | Tip (mm) | Taper | Length | Cross-section | Motion | Speed (rpm) | Torque | Role |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| W+ Tunnel | 0.15 | 2% | 21mm, 25mm, 31mm | Parallelogram | Reciprocating | Reciprocating | — | glide path |
| Small | 0.20 | 7% | 21mm, 25mm, 31mm | Parallelogram | Reciprocating | Reciprocating | — | shaping |
| Primary | 0.25 | 7% | 21mm, 25mm, 31mm | Parallelogram | Reciprocating | Reciprocating | — | shaping |
| Medium | 0.35 | 6% | 21mm, 25mm, 31mm | Parallelogram | Reciprocating | Reciprocating | — | shaping |
| Large | 0.45 | 5% | 21mm, 25mm, 31mm | Parallelogram | Reciprocating | Reciprocating | — | shaping |

## Protocol

### Glide Path

1. **Scout and Secure the Canal** — Per the IFU, explore the canal with a size 010 stainless steel hand file in the presence of a viscous chelator, determine working length with a radiograph and/or apex locator, and confirm a reproducible pathway with a loose 010 file.
   - Confirm patency before any engine-driven file (IFU)
2. **Expand the Glide Path — W+ Tunnel 15/.02** — Use the W+ Tunnel File with gentle inward pressure in one or more passes until working length is reached, then irrigate, recapitulate with a 010 K-file, and re-irrigate, per the IFU. _(File: W+ Tunnel · Reciprocating program)_
   - Allow the Tunnel file to progress passively through the secured region (IFU)
   - ⚠ Reconfirm working length before the shaping file (IFU)

### Shaping

1. **Start with the Primary 25/.07** — Always initiate shaping with the Primary file in the presence of sodium hypochlorite: gentle inward pressure, passive progression, and removal after about 2-3 mm of advance to clean the flutes, per the IFU. _(File: Primary · 150°/30° reciprocating program)_
   - Irrigate, recapitulate with a 010 hand file, and re-irrigate between passes (IFU)
   - Use 2-3 controlled passes to pre-enlarge the coronal two-thirds (IFU)
   - A brushing motion on the outstroke helps remove coronal interferences (IFU)
   - ⚠ Never force the file apically (IFU)
2. **Carry the Primary to Working Length** — In restrictive canals, re-negotiate the apical third with a 010 hand file until loose at length, reconfirm working length and patency, then carry the Primary file to full working length in one or more passes, per the IFU. _(File: Primary · 150°/30° reciprocating program)_
   - Remove the file immediately once working length is reached to avoid over-enlargement (IFU)

### Finishing

1. **Check the Apical Flutes** — Inspect the apical flutes after the Primary reaches length: if they are loaded with dentinal debris, shaping is complete, per the IFU.
   - If the Primary does not progress, drop to the Small 20/.07 to length, then return to the Primary to optimize the shape (IFU)
2. **Escalate to Medium or Large When Indicated** — If the Primary is loose at length with no debris in the apical flutes, continue with the Medium 35/.06 and/or Large 45/.05 until the desired apical shape is achieved, per the IFU. _(File: Medium / Large · 150°/30° reciprocating program)_
   - Proceed with your preferred irrigation, disinfection, drying, and obturation protocol once the shape is confirmed (IFU)

## Clinical Tips

- Motor programming per the IFU: use a WaveOne Gold-compatible reciprocating program, or enter 150° counter-clockwise / 30° clockwise where custom angles are required; speed and torque are defined by the program
- The technique is Primary-first: the 25/.07 red file starts every case, the Small 20/.07 is the fallback for canals it cannot enter, and the Medium 35/.06 / Large 45/.05 serve wider canals (IFU)
- Completion is judged at the apical flutes — dentinal debris loading after reaching length signals the shape is complete (IFU)
- The W+ Tunnel 15/.02 is the system's own reciprocating glide path file; NIC's cross-reference table maps it to reciprocating glide path files and W+ itself to WaveOne Gold — manufacturer-claimed correspondences, not independently verified
- MaxTech 3.0 gold heat treatment: the manufacturer describes improved flexibility over standard NiTi with a gold surface appearance, positioned for conventional curvature (~15°)
- All five files — the four shapers and the W+ Tunnel — use a parallelogram cross-section per the manufacturer's fact sheet (2026-08-12); the construction pages describe 13 mm short shanks, ISO color coding, and a 1.2 mm maximum flute diameter for the line
- Due to heat treatment the file may appear slightly curved out of the package — the manufacturer states this is not a defect and no straightening is needed (IFU)
- Do not fully immerse the files in sodium hypochlorite solution (IFU)
- Specifications on this page come from the manufacturer's consolidated fact sheet (2026-08-12, the controlling source), IFU draft (2026), and 2025 catalog; no independent peer-reviewed performance data exists for this system (PubMed, 2026-08-11)

## Warnings

- Single-use only per the manufacturer's IFU — reuse may increase the risk of cross-contamination, loss of cutting efficiency, or file separation
- Supplied non-sterile in this version: sterilize before first clinical use (steam autoclave 134 °C, 18 min holding time per the IFU) and discard after the procedure
- Use only in reciprocating motion — the IFU directs against continuous rotary motion for these files
- Do not use a file from a damaged package, or any instrument showing deformation, unwinding, corrosion, fracture, or wear (IFU)
- Avoid apical pressure: use a gentle inward pecking motion with short strokes and let the file advance passively (IFU)
- Contains nickel — the IFU contraindicates use in patients with known nickel/NiTi allergic sensitivity
- The IFU contraindicates mechanical use in canals with severe, sudden apical curvatures, complex canal divisions, or anatomy where safe passive file progression cannot be achieved

## Contraindications

- Known allergic sensitivity to nickel-titanium alloy or any component of the device (IFU)
- Canals with severe, sudden apical curvatures, complex canal divisions, or anatomy where safe passive file progression cannot be achieved (IFU)

## Best for

- single-file reciprocating shaping
- Primary-first technique with Small fallback
- included reciprocating glide path file

## Technical profile

- **Category:** single-file-reciprocating
- **Heat treatment:** Gold Heat-Treated — Manufacturer's MaxTech 3.0 heat treatment: gold-colored wire described as more flexible than standard NiTi while keeping cutting efficiency, positioned for conventional curvature (~15°). Manufacturer claims; no independent metallurgical characterization is cited.
- **Reuse:** Single-use
- **Motor:** any-reciprocating
- **Reciprocation angles:** 150° CCW / 30° CW
- **Glide path requirement:** integrated — W+ Tunnel File 15/.02 (included in the system) after a secured 010 hand-file pathway, per the IFU
- **Canal suitability:** Curvature: mild, moderate; Canal size: narrow, normal, wide; Calcified canals: no; Retreatment: no; Conservative access: no
- **Matching gutta-percha:** NIC W+ series gutta-percha points (20, 25, 35, 45)
- **Matching paper points:** NIC W+ series absorbent paper points (20, 25, 35, 45)
- **Content revision:** 2026-08-13

## FAQ

**What alloy is NIC W+ made from?**

NIC® W+ is manufactured from MaxTech 3.0 Gold Heat-Treated NiTi.

**How many files are in the NIC W+ sequence?**

The NIC® W+ system includes 5 files: W+ Tunnel, Small, Primary, Medium, Large.

**What is the NIC W+ file sequence?**

NIC® W+ offers these files: W+ Tunnel, Small, Primary, Medium, Large. One shaping file is selected per canal; the protocol section above shows the starting file.

**What motion type does NIC W+ use?**

NIC® W+ uses reciprocating motion.

**What cases is NIC W+ best for?**

NIC® W+ is best suited for: single-file reciprocating shaping, Primary-first technique with Small fallback, included reciprocating glide path file.

**What speed and torque settings are recommended for NIC W+?**

NIC® W+ uses reciprocating motion with manufacturer-specific motor settings (refer to official DFU for exact parameters).

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_Educational reference for dental professionals. Always confirm settings against the official manufacturer instructions for use before clinical procedures._