A high-flexibility, fracture-resistant 3-file system for fast, sequential removal of gutta-percha and root canal fillings.

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Product Overview Key Features Product Video Technical Specifications Package Includes

Roduct Overview

Designed specifically for root canal retreatment. Special-purpose NiTi alloy with excellent flexibility and resistance to fracture. Used to remove gutta-percha and filling materials from the root canal. The D1–D3 three-file system works from coarse to fine and short to long, sequentially removing filling materials from the root canal.

Key Features

Product Video

Technical Specifications

Clinical Usage Instructions (IFU) — D-Files

Step 1: Preoperative radiograph to confirm the obturation status. Remove the coronal restoration.
Step 2: Use D1 (16mm) at 150–300 RPM with pecking motions to remove the coronal 1/3 of gutta-percha.
Step 3: Use D2 (18mm) to remove the middle 1/3 of gutta-percha.
Step 4: Use D3 (22mm) to remove the apical 1/3 of gutta-percha to WL.
Step 5: Confirm WL with a #10 K-file. Irrigate thoroughly (NaOCl + EDTA).
Step 6: Re-prepare the root canal (using a shaping system such as D-Shaper or Super Files III).

Note: Retreatment files are subject to high wear. It is recommended that D1, D2, and D3 be used as single-use instruments. If gutta-percha softening is desired, a solvent (chloroform / orange oil) can be used as an adjunct.

This device is supplied with electronic instructions for use only, which are available in our Download Centre. Safety and performance information is contained therein. Please carefully review the instructions before use.

Package Includes

DENCO D-Files Specifications

File Model	Tip Ø (mm)	Taper	Length	Function	Package
D1	0.30	9	16mm, FG	Removes gutta-percha from the coronal 1/3 to middle 1/3	6 pcs/box, single or assorted
D2	0.25	8	18mm, FG	Removes gutta-percha from the middle 1/3 to apical 1/3
D3	0.20	7	22mm, FG	Removes gutta-percha from the apical 1/3 to WL