What alloy is E-Flex Gold made from?

E-Flex Gold is manufactured from Control Memory NiTi (gold heat-treated) with gold heat treatment.

How many files are in the E-Flex Gold sequence?

The E-Flex Gold system includes 9 files: 17/.08 (Orifice Opener), 19/.02 (Glider), 15/.04, 20/.04, 25/.04, 30/.04, 35/.04, 25/.06, 30/.06.

What motion type does E-Flex Gold use?

E-Flex Gold uses continuous rotation motion.

What cases is E-Flex Gold best for?

E-Flex Gold is best suited for: cost-effective gold heat-treated rotary system, integrated workflow (orifice opener + glider + shaping in one family), single uniform speed/torque setting (350 RPM / 2 Ncm).

What speed and torque settings are recommended for E-Flex Gold?

Recommended settings: 300–350 RPM and 3.0 / 2.5 Ncm across the file sequence (refer to official DFU for full per-file parameters).

E-Flex Gold

Eighteeth

Continuous Rotation

E-Flex Gold

Gold heat-treated CM wire with integrated orifice opener (17/.08) and glider (19/.02) — variable pitch design with non-cutting safety tip

AlloyControl Memory NiTi (gold heat-treated)File9VerifiedMar 2026

Specifications

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File	Tip	Taper	Speed rpm	Torque Ncm
17/.08 (Orifice Opener)	0.17	8%	300	3.0
19/.02 (Glider)	0.19	2%	350	2.5
15/.04	0.15	4%	350	2.5
20/.04	0.20	4%	350	2.5
25/.04	0.25	4%	350	2.5
30/.04	0.30	4%	350	2.5
35/.04	0.35	4%	350	2.5
.06 Taper
25/.06	0.25	6%	350	2.5
30/.06	0.30	6%	350	2.5

Clinical Tips

Orifice opener (17/.08) operates at 300 RPM / 3.0 Ncm; all other files at 350 RPM / 2.5 Ncm (per Eighteeth series brochure). Note: a distributor spec (Alkaramdent) lists a flat 350 RPM / 2.0 Ncm — series brochure from eighteeth.com is used here as the manufacturer source.

Gold heat-treated Control Memory NiTi wire provides enhanced flexibility and cyclic fatigue resistance (per brochure).

The system includes an integrated orifice opener (17/.08, 19mm) and glider (19/.02) — no separate glide path system needed.

Available in three sub-variants: Standard (variable taper .04 with orifice opener + glider), .06 Taper (sizes 15-35), and Wide Canal (.04 taper, sizes 20-50) (per specs).

Non-cutting safety tip reduces ledge formation and apical extrusion; variable pitch reduces screw-in tendency (per series brochure).

Warnings

No standalone IFU is publicly available for E-Flex Gold; data sourced from Eighteeth series brochure (eighteeth.com, 2022) and distributor spec (Alkaramdent). Settings may differ between documents — verify with current manufacturer literature.
Orifice opener: 300 RPM / 3.0 Ncm; shaping files: 350 RPM / 2.5 Ncm (per series brochure)
Contains nickel-titanium — do not use on patients with known nickel allergy
Inspect instruments before use; discard if visible defects

Obturation Techniques

Single cone, warm vertical, carrier-based & lateral compaction