# NIC® V Blue

> Three-Size Blue Reciprocation

- **Manufacturer:** NIC Dental (Shenzhen Superline Technology)
- **Motion:** Reciprocating
- **Alloy:** MaxTech 6.0 Blue Heat-Treated NiTi
- **Key feature:** Three-size single-file reciprocating system (R25/R40/R50, S-shaped, regressive taper) on a 150°/30° alternating program in pre-bendable MaxTech 6.0 blue wire with IFU-defined apical gauging

## Specifications

| File | Tip (mm) | Taper | Length | Cross-section | Motion | Speed (rpm) | Torque | Role |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| R25 | 0.25 | 8% regressive | 21mm, 25mm, 31mm | S-shaped | Reciprocating | Reciprocating | — | shaping |
| R40 | 0.40 | 6% regressive | 21mm, 25mm, 31mm | S-shaped | Reciprocating | Reciprocating | — | shaping |
| R50 | 0.50 | 5% regressive | 21mm, 25mm, 31mm | S-shaped | Reciprocating | Reciprocating | — | shaping |

## Protocol

### Glide Path

1. **Select the File and Scout the Canal** — Per the IFU, assess canal visibility, width, and curvature on the pre-operative radiograph: R25 is the usual primary size, and R40 or R50 are chosen only when gauging shows a larger preparation is appropriate. Scout with a small stainless steel hand file under lubricant or irrigant.
   - For a narrow or poorly visible canal, begin with R25 (IFU)
   - Passive hand-file gauging helps decide whether R40 or R50 fits a clearly visible canal (IFU)
2. **Confirm Patency and Prepare a Glide Path When Needed** — Confirm patency and a reproducible pathway with a 010 hand file, and create or expand a glide path to at least ISO 015 whenever resistance, curvature, or limited patency indicates additional preparation, per the IFU.
   - Reconfirm working length before the reciprocating file (IFU)
   - ⚠ Do not start reciprocating shaping in a canal without a confirmed, reproducible pathway (IFU)

### Shaping

1. **Reciprocating Shaping in 3 mm Pecks** — Place irrigant, introduce the selected V Blue file, activate the authorized reciprocating mode, and advance with slow in-and-out pecking movements of about 3 mm or less under very light apical pressure, per the IFU. _(File: R25 (usual) · 150° CCW / 30° CW reciprocating program)_
   - After about three pecks, withdraw the file, clean the flutes, irrigate, and recapitulate (IFU)
   - A gentle brushing action on withdrawal may enlarge the canal entrance when appropriate (IFU)
   - ⚠ If the file does not progress, stop, clean, irrigate, recapitulate with a 010 or 015 hand file, and reassess the glide path (IFU)

### Finishing

1. **Gauge the Apical Preparation** — After the selected file reaches working length, gauge the apical preparation: 030 hand file after R25, 050 after R40, 060 after R50 — snug at length means shaping may be complete, per the IFU.
   - When the gauge remains loose and anatomy supports it, move to the next V Blue size and repeat shaping and gauging (IFU)
   - Do not automatically enlarge every canal beyond R25 (IFU)
2. **Verify and Obturate** — Complete final irrigation, drying, and apical verification; select paper points and a master cone corresponding to the final V Blue size once dimensional compatibility is confirmed, per the IFU.
   - Confirm working length, apical fit, tug-back, and radiographic fit before sealer placement (IFU)

## Clinical Tips

- Kinematics per the manufacturer's fact sheet (2026-08-12): alternating 150° counter-clockwise / 30° clockwise — the IFU draft itself printed no angles and defers to the motor's authorized reciprocating program, which it explicitly forbids substituting with a continuous-rotation setting
- R25 is the primary size for most routine canals; R40 and R50 are selected only when anatomy and apical gauging indicate a larger preparation (IFU)
- Built-in gauging scheme: 030 after R25, 050 after R40, 060 after R50 — snug at length signals completion (IFU)
- MaxTech 6.0 blue heat treatment allows the file to be gently pre-bent to improve access, and the manufacturer positions the tier for curvature up to ~30° — manufacturer claims, not independently verified
- S-shaped cross-section with two cutting edges and a regressive taper intended to limit unnecessary coronal dentin removal (manufacturer)
- NIC's own cross-reference table maps the V-Series to Reciproc / Reciproc Blue users, with matching R25/R40/R50 naming — a manufacturer-claimed correspondence, not independently verified
- The IFU conditionally mentions retreatment assistance (removing gutta-percha) 'when permitted by the current NIC labelling' — treat this as unconfirmed until NIC publishes explicit retreatment instructions
- Do not fully immerse the files in sodium hypochlorite solution (IFU)
- Supplied 6 instruments per pack; 21/25/31 mm lengths; maximum flute diameter 1.2 mm (fact sheet)
- The untreated V File — MaxTech 1.0, same R25/R40/R50 sizes, positioned as the RECIPROC alternative — has its own EndoGuide page. A third sibling on the same fact sheet, the blue V Mini series with a 0.8 mm flute diameter, is not published here while a size/label discrepancy in its fourth row remains unresolved
- 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 the motor's authorized reciprocating mode — the IFU directs never to use continuous rotation with these files
- Do not use a file from a damaged package, or any instrument showing deformation, unwinding, corrosion, fracture, or wear (IFU)
- Use very light apical pressure with pecks of about 3 mm or less; forcing the file may cause separation, ledging, transportation, or perforation (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, calcified anatomy, 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, calcified anatomy, or anatomy where safe passive file progression cannot be achieved (IFU)

## Best for

- one-file shaping with R25 as the routine size
- pre-bendable blue wire for access
- regressive taper to limit coronal removal

## Technical profile

- **Category:** single-file-reciprocating
- **Heat treatment:** Blue Heat-Treated — Manufacturer's MaxTech 6.0 heat treatment: blue-colored wire described as highly flexible with reduced rigidity and improved cyclic fatigue resistance, gently pre-bendable, positioned for curvature up to ~30°. Manufacturer claims; no independent metallurgical characterization is cited.
- **Pre-bendable:** yes
- **Reuse:** Single-use
- **Motor:** any-reciprocating
- **Reciprocation angles:** 150° CCW / 30° CW
- **Glide path requirement:** optional — 010 hand-file pathway routinely; glide path to at least ISO 015 whenever resistance, curvature, or limited patency indicates it, per the IFU
- **Canal suitability:** Curvature: mild, moderate; Canal size: narrow, normal, wide; Calcified canals: no; Retreatment: no; Conservative access: no
- **Content revision:** 2026-09-10

## FAQ

**What alloy is NIC V Blue made from?**

NIC® V Blue is manufactured from MaxTech 6.0 Blue Heat-Treated NiTi.

**How many files are in the NIC V Blue sequence?**

The NIC® V Blue system includes 3 files: R25, R40, R50.

**What is the NIC V Blue file sequence?**

NIC® V Blue offers these files: R25, R40, R50. One shaping file is selected per canal; the protocol section above shows the starting file.

**What motion type does NIC V Blue use?**

NIC® V Blue uses reciprocating motion.

**What cases is NIC V Blue best for?**

NIC® V Blue is best suited for: one-file shaping with R25 as the routine size, pre-bendable blue wire for access, regressive taper to limit coronal removal.

**What speed and torque settings are recommended for NIC V Blue?**

NIC® V Blue 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._