# iRaCe®

> 3-File Simplicity

- **Manufacturer:** FKG Dentaire
- **Motion:** Continuous Rotation
- **Alloy:** Conventional NiTi (Electropolished)
- **Key feature:** Simplified 3-file sequence (R1-R2-R3) with iRaCe Plus extension for difficult canals — alternating cutting edges and triangular cross-section at 600 RPM

## Specifications

| File | Tip (mm) | Taper | Length | Cross-section | Motion | Speed (rpm) | Torque | Role |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| R1 | 0.15 | 6% | 21mm, 25mm, 31mm | Triangular | Continuous Rotation | 600 | 1.5 Ncm | shaping |
| R1a | 0.20 | 2% | 21mm, 25mm, 31mm | Triangular | Continuous Rotation | 600 | 1.5 Ncm | shaping |
| R1b | 0.25 | 2% | 21mm, 25mm, 31mm | Triangular | Continuous Rotation | 600 | 1.5 Ncm | shaping |
| R2 | 0.25 | 4% | 21mm, 25mm, 31mm | Triangular | Continuous Rotation | 600 | 1.5 Ncm | shaping |
| R3 | 0.30 | 4% | 21mm, 25mm, 31mm | Triangular | Continuous Rotation | 600 | 1.5 Ncm | finishing |

## Protocol

### Glide Path

1. **Glide Path Preparation** — Prepare the glide path with hand K-files before introducing rotary instruments. Confirm patency and establish working length.
   - A confirmed glide path to at least #10 K-file is recommended before using iRaCe rotary files
   - FKG ScoutRaCe files may also be used for mechanical glide path preparation
   - Irrigate copiously before starting the rotary sequence
   - ⚠ Do not introduce rotary files without a confirmed glide path

### Shaping

1. **Standard Sequence: R1 to Working Length** — Introduce R1 (15/.06) in rotation and reach working length. Use long back-and-forth gentle strokes with light touch. Work 3-4 seconds in a row, withdraw, clean the blade, and irrigate the canal. If R1 does not reach working length, do not force — switch to the iRaCe Plus protocol (per IFU). _(File: R1 · 600 RPM · 1.5 Ncm · Continuous rotation with gentle back-and-forth strokes)_
   - Let the instrument do the work; do not apply heavy apical pressure (per IFU golden rules)
   - Work 3-4 seconds at a time, then withdraw (per IFU golden rules)
   - If R1 cannot reach working length, switch to iRaCe Plus (R1a + R1b) before continuing
   - ⚠ Do not force R1 if it does not reach working length — switch to iRaCe Plus protocol (per IFU)
2. **R2 Shaping to Working Length** — Continue shaping with R2 (25/.04) up to working length. Clean and irrigate between instruments. _(File: R2 · 600 RPM · 1.5 Ncm)_
   - Same back-and-forth technique as R1
   - Irrigate and recapitulate with a small hand file between rotary instruments

### Finishing

1. **R3 Final Shaping to Working Length** — Finish shaping with R3 (30/.04) up to working length. Final irrigation and verification. _(File: R3 · 600 RPM · 1.5 Ncm)_
   - R3 achieves a final apical preparation of ISO 30 with .04 taper
   - For canals requiring larger preparation, additional FKG RaCe files (35/.04, 40/.04) may be considered
   - After R3, irrigate and verify working length before obturation

## Clinical Tips

- All iRaCe files operate at 600 RPM and 1.5 Ncm (per IFU). FKG speed/torque chart shows 400 RPM minimum, 600 RPM optimal.
- The iRaCe Plus sequence (R1a 20/.02 + R1b 25/.02) is for difficult cases: narrow, severely curved, or calcified canals where R1 (15/.06) cannot reach working length (per IFU).
- After R1a and R1b reach working length, continue with the standard R2 and R3 to complete preparation.
- Golden rules (per IFU): long back-and-forth gentle strokes; light touch, let the instrument work; 3-4 seconds at a time, then withdraw, clean blade, and irrigate.
- Alternating cutting edges reduce screw-in tendency (per brochure).
- Electropolished surface may improve corrosion resistance (per brochure).
- Safety Memo Disc (SMD) provides visual usage tracking: pull off 1 petal per simple case, 2 per medium case, 4 per difficult case (per IFU).
- Single patient use is recommended to avoid cross-contamination (per IFU). If reprocessed, autoclave at 134°C, 2.2 bar, 18 min per EN/ISO 17664 protocol.

## Warnings

- Single patient use is recommended to avoid cross-contamination (per IFU)
- Always inspect instruments before use; discard if any visible defects (per IFU)
- Do not force R1 if it does not reach working length — switch to iRaCe Plus (per IFU)
- Contains nickel — do not use on patients with known nickel allergy (per IFU)
- Do not use phenol, aldehyde, or di-/triethanolamine solutions for disinfection (per IFU)
- Single-use instruments must not be retreated for subsequent use — that could compromise their integrity (per IFU)

## Contraindications

- Known nickel allergy (per IFU)

## Best for

- simplified 3-file rotary sequence
- difficult canals via iRaCe Plus extension (narrow, curved, calcified)
- individual file selection approach

## Technical profile

- **Category:** multi-file-rotary
- **Heat treatment:** Conventional — Conventional NiTi with electropolished surface for enhanced corrosion resistance. No heat treatment applied.
- **Manufacturing method:** ground
- **Pre-bendable:** no
- **Reuse:** Reusable (limited)
- **Motor:** any-rotary
- **Glide path requirement:** manual-only
- **Canal suitability:** Curvature: mild, moderate, severe; Canal size: narrow, normal, wide; Calcified canals: yes; Retreatment: no; Conservative access: no
- **Content revision:** 2026-03-22

## FAQ

**What alloy is iRaCe made from?**

iRaCe® is manufactured from Conventional NiTi (Electropolished).

**How many files are in the iRaCe sequence?**

The iRaCe® system includes 5 files: R1, R1a, R1b, R2, R3.

**What is the iRaCe file sequence?**

iRaCe® is used in this order: R1 → R1a → R1b → R2 → R3. Per-file speed, torque and technique are in the protocol section above.

**What motion type does iRaCe use?**

iRaCe® uses continuous rotation motion.

**What cases is iRaCe best for?**

iRaCe® is best suited for: simplified 3-file rotary sequence, difficult canals via iRaCe Plus extension (narrow, curved, calcified), individual file selection approach.

**What speed and torque settings are recommended for iRaCe?**

Recommended settings: 600 RPM and 1.5 Ncm across the file sequence (refer to official DFU for full per-file parameters).

## References

- [Manufacturer instructions for use (DFU/IFU)](https://kris95.bg/wp-content/uploads/2022/02/FKG-iRace-iRace-Plus-IFU.pdf)

## Related

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