# EdgeOne Fire™

> FireWire Reciprocation

- **Manufacturer:** EdgeEndo
- **Motion:** Reciprocating
- **Alloy:** FireWire™ Heat-Treated NiTi
- **Key feature:** FireWire heat treatment with enhanced cyclic fatigue resistance and WaveOne-compatible motor settings (manufacturer bench data)

## Specifications

| File | Tip (mm) | Taper | Length | Cross-section | Motion | Speed (rpm) | Torque | Role |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| GlidePath | 0.19 | 2-6% (progressive) | 21mm, 25mm, 31mm | Triangular | Reciprocating | Reciprocating | — | glide path |
| Small | 0.20 | variable | 21mm, 25mm, 31mm | Parallelogram | Reciprocating | Reciprocating | — | shaping |
| Primary | 0.25 | variable | 21mm, 25mm, 31mm | Parallelogram | Reciprocating | Reciprocating | — | shaping |
| Medium | 0.35 | variable | 21mm, 25mm, 31mm | Parallelogram | Reciprocating | Reciprocating | — | finishing |
| Large | 0.45 | variable | 21mm, 25mm, 31mm | Parallelogram | Reciprocating | Reciprocating | — | finishing |

## Protocol

### Glide Path

1. **Scout Canal** — In presence of lubricant (e.g., EdgeLube), use #10 K-file to verify canal patency. Determine working length with apex locator and periapical radiograph.
   - Pre-curve file for curved canals
   - Use watch-winding motion
   - Verify smooth, reproducible glide path to at least loose #10
2. **Expand Glide Path** — Expand glide path to at least 0.15mm using hand files, EdgeFind, or EdgeOne GlidePath reciprocating file (19/.02-06 progressive taper). _(File: EdgeOne GlidePath (19/.02-06) · WaveOne ALL mode · Reciprocating)_
   - EdgeOne GlidePath replaces up to 8 instruments (hand files + Gates Glidden)
   - Use gentle inward pecking motion with short amplitude strokes
   - Irrigate, recapitulate with #10, re-irrigate after reaching WL

### Shaping

1. **ALWAYS Start with PRIMARY** — Always initiate shaping with PRIMARY file (#25) per DFU. Do not pre-select Small/Medium/Large — PRIMARY is the mandatory starting file. Use gentle inward pressure, let the file passively progress. _(File: PRIMARY (#25) · WaveOne ALL mode · Reciprocating)_
   - After shaping 2-3mm, remove and clean file
   - Irrigate, recapitulate with #10, re-irrigate
   - Use brushing motion on outstroke for irregular cross-sections
   - ⚠ Never use continuous rotation
   - ⚠ Do not force file apically
2. **Pre-enlarge Coronal 2/3** — Continue with PRIMARY file in 2-3 passes to pre-enlarge coronal two-thirds of canal. _(File: PRIMARY (#25) · WaveOne ALL mode)_
   - In restrictive canals, use #10 K-file with lubricant to negotiate to terminus
   - Work file until completely loose at length
   - Establish WL, confirm patency, verify glide path
3. **Carry to Working Length** — Carry PRIMARY file to full working length in one or more passes. Upon reaching length, remove file to avoid over-enlarging foramen. _(File: PRIMARY (#25) · WaveOne ALL mode)_
   - Inspect apical flutes - if loaded with dentinal debris, shape is finished
   - If PRIMARY doesn't progress, use SMALL file first then return to PRIMARY
4. **Upsize if Needed** — If PRIMARY is loose at WL with no dentinal debris in apical flutes, continue with MEDIUM (#35) and/or LARGE (#45) until apical flutes are loaded. _(File: MEDIUM / LARGE · WaveOne ALL mode)_
   - MEDIUM (#35) for medium canals
   - LARGE (#45) for wide canals

### Finishing

1. **Verify Preparation** — Check apical preparation with corresponding hand file. Verify tug-back with master cone.
   - Small = #20 hand file
   - Primary = #25 hand file
   - Medium = #35 hand file
   - Large = #45 hand file
2. **Disinfection & Obturation** — Proceed with your standard disinfection protocol once shape is confirmed (per DFU). Obturate with matching GP cone and bioceramic sealer (per 2025 tip card).
   - Standard irrigation protocol
   - EdgeOne Fire matching GP points and paper points available
   - 2025 tip card recommends bioceramic sealer with matching GP cone

## Clinical Tips

- ALWAYS start with PRIMARY file per DFU — do not pre-select sizes; use SMALL only if PRIMARY does not progress
- Compatible with WaveOne motor settings; 2025 tip card also lists Edge HP presets A/B/C and 350 RPM / 4.0-5.2 Ncm fallback
- FireWire heat treatment may provide improved cyclic fatigue resistance vs Gold-treated NiTi — Gambarini 2019 (PMID 31516658) found ~2x in Medium files at 90°/2mm in vitro (bench data, specific test conditions)
- Reciprocating motion reduces cyclic fatigue accumulation vs continuous rotation
- Single-file system reduces cross-contamination risk — delivered sterile, single-use
- Files may appear slightly curved — this is normal, not a defect; they follow canal anatomy once inside
- EdgeCore carrier-based obturation system available as matching accessory

## Warnings

- Must use reciprocating motor settings — WaveOne-compatible mode or Edge HP presets A/B/C (per 2025 tip card); never continuous rotation
- Single use only - cannot be resterilized or reused
- Contains nickel - do not use on patients with nickel allergy
- Do not use in canals with very severe or sudden apical curvatures
- Clean flutes frequently and check for signs of distortion or wear
- If a file does not easily progress, remove and inspect before re-inserting

## Contraindications

- very severe and sudden curvatures (per sterile DFU)
- known allergic sensitivity to nickel (per sterile DFU)

## Best for

- WaveOne Gold alternative with enhanced fatigue resistance
- single-file reciprocating efficiency
- reduced cross-contamination

## Technical profile

- **Category:** single-file-reciprocating
- **Heat treatment:** Fire-Wire — Proprietary FireWire heat treatment — enhanced cyclic fatigue resistance vs Gold-treated NiTi (Gambarini 2019 bench data, PMID 31516658)
- **Manufacturing method:** ground
- **Pre-bendable:** yes
- **Reuse:** Single-use
- **Motor:** specific-motor — WaveOne-compatible reciprocating mode or Edge HP presets A/B/C; alt: 350 RPM / 4.0-5.2 Ncm (per 2025 tip card)
- **Reciprocation angles:** 150° CCW / 30° CW
- **Glide path requirement:** mechanical-recommended — 1) Verify glide path to WL with #10 K-file in lubricant. 2) Expand to at least 0.15mm (#15) using hand files, EdgeFind, or EdgeOne GlidePath. 3) Then initiate shaping with PRIMARY.
- **Canal suitability:** Curvature: mild, moderate, severe; Canal size: narrow, normal, wide; Calcified canals: no; Retreatment: no; Conservative access: no
- **Matching gutta-percha:** EdgeEndo EdgeOne Fire GP Points (Small, Primary, Medium, Large)
- **Matching paper points:** EdgeEndo EdgeOne Fire Paper Points (Small, Primary, Medium, Large)
- **Content revision:** 2026-02-15

## FAQ

**What alloy is EdgeOne Fire made from?**

EdgeOne Fire™ is manufactured from FireWire™ Heat-Treated NiTi with fire-wire heat treatment.

**How many files are in the EdgeOne Fire sequence?**

The EdgeOne Fire™ system includes 5 files: GlidePath, Small, Primary, Medium, Large.

**What motion type does EdgeOne Fire use?**

EdgeOne Fire™ uses reciprocating motion.

**What cases is EdgeOne Fire best for?**

EdgeOne Fire™ is best suited for: WaveOne Gold alternative with enhanced fatigue resistance, single-file reciprocating efficiency, reduced cross-contamination.

**What speed and torque settings are recommended for EdgeOne Fire?**

EdgeOne Fire™ uses reciprocating motion with manufacturer-specific motor settings (refer to official DFU for exact parameters).

## References

- [Manufacturer instructions for use (DFU/IFU)](https://web.edgeendo.com/ifu/edgeone-fire)
- [PubMed 31516658](https://pubmed.ncbi.nlm.nih.gov/31516658/)

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