# EndoSequence®

> Crown-Down Precision

- **Manufacturer:** Brasseler USA
- **Motion:** Continuous Rotation
- **Alloy:** Conventional NiTi (Electropolished)
- **Key feature:** Patented Alternating Contact Point (ACP) design with Expeditor canal-sizing file and crown-down technique at 500-600 RPM

## Specifications

| File | Tip (mm) | Taper | Length | Cross-section | Motion | Speed (rpm) | Torque | Role |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Expeditor™ | 0.27 | 4% | 21mm | Triangular (ACP) | Continuous Rotation | 500-600 | 1.8-2.3 Ncm | orifice opener |
| 15/.04 | 0.15 | 4% | 21mm, 25mm, 31mm | Triangular (ACP) | Continuous Rotation | 500-600 | 1.8-2.3 Ncm | shaping |
| 20/.04 | 0.20 | 4% | 21mm, 25mm, 31mm | Triangular (ACP) | Continuous Rotation | 500-600 | 1.8-2.3 Ncm | shaping |
| 25/.04 | 0.25 | 4% | 21mm, 25mm, 31mm | Triangular (ACP) | Continuous Rotation | 500-600 | 1.8-2.3 Ncm | shaping |
| 30/.04 | 0.30 | 4% | 21mm, 25mm, 31mm | Triangular (ACP) | Continuous Rotation | 500-600 | 1.8-2.3 Ncm | shaping |
| 35/.04 | 0.35 | 4% | 21mm, 25mm, 31mm | Triangular (ACP) | Continuous Rotation | 500-600 | 1.8-2.3 Ncm | shaping |
| 40/.04 | 0.40 | 4% | 21mm, 25mm, 31mm | Triangular (ACP) | Continuous Rotation | 500-600 | 1.8-2.3 Ncm | shaping |
| 45/.04 | 0.45 | 4% | 21mm, 25mm, 31mm | Triangular (ACP) | Continuous Rotation | 500-600 | 1.8-2.3 Ncm | shaping |
| 50/.04 | 0.50 | 4% | 21mm, 25mm, 31mm | Triangular (ACP) | Continuous Rotation | 500-600 | 1.8-2.3 Ncm | finishing |

## Protocol

### Glide Path

1. **Coronal Patency and Canal Assessment** — Using a #10 hand file, establish coronal patency. The hand file only needs to reach approximately half the projected working length. Then use the Expeditor file to assess canal size: if it engages before half its cutting length, the canal is small; at half or more, medium; if it passes through loosely, large. Select the appropriate pack accordingly. _(File: Expeditor™ · 500-600 RPM · 1.8-2.3 Ncm)_
   - The Expeditor determines which file pack to open (X-Small/Small, Medium, or Large) based on depth of engagement (per IFU)
   - If coronal patency is established easily with the #10 hand file, the canal is likely patent to the apex (per IFU)
   - An audible clicking sound during engagement is normal and indicates the ACP design is functioning (per IFU)
   - ⚠ Do not take any rotary file where a hand file has not previously been (per IFU)

### Shaping

1. **Crown-Down Instrumentation** — Begin crown-down with the largest file from the appropriate pack. Work each file in a single-then-back, second-then-back, third-then-out motion (3 engagements per series). After 2 series (6 total engagements), move to the next smaller file. After the second rotary file, establish working length with a #10 hand file and apex locator. _(500-600 RPM · 1.8-2.3 Ncm · Continuous rotation with engagement-based crown-down)_
   - Each series of 3 engagements should take no more than 2-3 seconds (per IFU)
   - Always wipe the file after 3 engagements — the ACP design accumulates debris efficiently (per IFU)
   - Establish working length AFTER the second rotary file to take advantage of the crown-down (per IFU)
   - Light touch technique; as you gain experience, torque may be increased but should not exceed 2.9 Ncm (per IFU)
   - ⚠ When the clicking sound becomes distinctly more pronounced, you are over-engaging the file (per IFU)
   - ⚠ Do not finish preparation with a size smaller than #20 in either .04 or .06 taper (per IFU)

### Finishing

1. **Preparation Completion and Obturation** — The first file to reach working length with engagement completes the preparation. Alternatively, finish one size larger than the first file to reach working length with engagement. Obturate with matching EndoSequence gutta percha cone.
   - If crown-down reaches #15, loop back with #20 to finish the preparation at that size (per IFU)
   - Matching EndoSequence BC Points and BC Sealer are available for bioceramic obturation
   - Irrigate thoroughly before obturation

## Clinical Tips

- EndoSequence files work best at 500-600 RPM (per IFU and chairside card). Set initial torque between 1.8-2.3 Ncm; do not exceed 2.9 Ncm (per IFU).
- The Alternating Contact Point (ACP) design keeps the file centered and carries debris coronally in a wave-like fashion (per brochure).
- Use the engagement-based technique: 3 strokes to engagement per series, 2 series per file, then wipe and move to the next file (per IFU).
- All files are available in both .04 and .06 tapers for sizes 15-50. Sizes 55-80 are available in .04 taper only (X-Large pack per IFU). The .04 taper may be preferred in difficult or curved canals.
- The Expeditor (27/.04) is used only for canal size assessment, not as a shaping instrument.
- Precision non-cutting safety tip reduces the risk of ledging and transportation (per brochure).
- Electropolished surface finish improves resistance to cyclic and torsional fatigue (per brochure).
- Single patient use only. Brasseler USA defines single use as one patient, one tooth (per IFU).

## Warnings

- Single patient use only — one patient, one tooth (per IFU)
- Do not take any rotary file where a hand file has not previously been (per IFU)
- Do not finish preparation with a size smaller than #20 (per IFU)
- Do not exceed 2.9 Ncm torque (per IFU)
- Always use lubrication with rotary files (per IFU)
- Always keep the file moving while in the canal to reduce stress (per IFU)
- Contains nickel-titanium — do not use on patients with known nickel allergy

## Best for

- crown-down technique with canal-sized file kits
- wide range of canal sizes with dual taper (.04/.06) options — sizes 15-50 shown here, 55-80 also available as X-Large pack
- synchronized obturation system (BC Points + BC Sealer)

## Technical profile

- **Category:** multi-file-rotary
- **Heat treatment:** Conventional — Conventional NiTi with proprietary electropolished finish for enhanced cyclic and torsional fatigue resistance.
- **Manufacturing method:** ground
- **Pre-bendable:** no
- **Reuse:** Single-use
- **Motor:** any-rotary
- **Glide path requirement:** manual-only — #10 hand file for coronal patency, then Expeditor for canal size assessment
- **Canal suitability:** Curvature: mild, moderate; Canal size: narrow, normal, wide; Calcified canals: no; Retreatment: no; Conservative access: no
- **Matching gutta-percha:** EndoSequence BC Points (15-80 (.04), 15-50 (.06))
- **Content revision:** 2026-03-22

## FAQ

**What alloy is EndoSequence made from?**

EndoSequence® is manufactured from Conventional NiTi (Electropolished).

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

The EndoSequence® system includes 9 files: Expeditor™, 15/.04, 20/.04, 25/.04, 30/.04, 35/.04, 40/.04, 45/.04, 50/.04.

**What is the EndoSequence file sequence?**

EndoSequence® is used in this order: Expeditor™ → 15/.04 → 20/.04 → 25/.04 → 30/.04 → 35/.04 → 40/.04 → 45/.04 → 50/.04. Per-file speed, torque and technique are in the protocol section above.

**What motion type does EndoSequence use?**

EndoSequence® uses continuous rotation motion.

**What cases is EndoSequence best for?**

EndoSequence® is best suited for: crown-down technique with canal-sized file kits, wide range of canal sizes with dual taper (.04/.06) options — sizes 15-50 shown here, 55-80 also available as X-Large pack, synchronized obturation system (BC Points + BC Sealer).

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

Recommended settings: 500-600 RPM and 1.8-2.3 Ncm across the file sequence (refer to official DFU for full per-file parameters).

## References

- [Manufacturer instructions for use (DFU/IFU)](https://media.brasselerusa.com/userfiles/IFU,Manuals,Brochures/B_2342_ES%20Instructions_0609%20REV_.pdf)

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