NiTi Alloy

# Gold Heat Treatment

Gold heat treatment is a proprietary thermal process developed by Dentsply Sirona that raises the austenite finish temperature (Af) above 37°C, placing the alloy predominantly in the martensite phase at body temperature. Martensitic NiTi is significantly more flexible than austenitic NiTi, reducing lateral forces on canal walls and cutting resistance. Laboratory (bench) studies have reported Gold-treated files to offer roughly two to four times greater cyclic fatigue resistance than conventional M-Wire instruments, and they are often selected for severely curved canals. The characteristic gold surface color results from a thin oxide layer formed during heat treatment.

## Metallurgical Properties

Af Temperature45–55°C

Phase at 37°CMartensite

FlexibilityVery High (2–4× vs conventional)

Cyclic Fatigue2–4× greater cyclic fatigue resistance

[Compare all heat treatments→](https://endo-guide.app/alloy/heat-treatment-comparison)

## Systems Using Gold Heat Treatment

[### ProTaper Gold Dentsply Sirona Rotary Gold · variable (2-19%) · 8 files The Gold Standard](https://endo-guide.app/system/protaper-gold)[### ProTaper Ultimate Dentsply Sirona Rotary M-Wire · 2-12% (variable) · 8 files The Ultimate Evolution](https://endo-guide.app/system/protaper-ultimate)[### WaveOne Gold Dentsply Sirona Reciprocating NiTi · 7% · 5 files Single File Reciprocation](https://endo-guide.app/system/waveone-gold)[### EndoArt Action İnci Dental (Turkey) Rotary Gold/Blue · Variable · 12 files Turkish Heat-Treated Innovation](https://endo-guide.app/system/endoart-action)[### EndoArt Touch İnci Dental (Turkey) Rotary Gold/Blue · 6% · 19 files Fixed 06 Taper Precision](https://endo-guide.app/system/endoart-touch)[### EndoArt Smart İnci Dental (Turkey) Rotary Gold/Blue · 4% · 19 files Fixed 04 Taper Flexibility](https://endo-guide.app/system/endoart-smart)[### EndoArt Expert İnci Dental (Turkey) Reciprocating Gold/Blue · Variable · 10 files Single-File Reciprocating](https://endo-guide.app/system/endoart-expert)[### E-Flex Gold Eighteeth Rotary Control · 4% / 6% · 9 files Gold Heat-Treated Economy](https://endo-guide.app/system/e-flex-gold)[### RC Gold Perfect Dental Reciprocating Gold · 5-8% · 3 files Gold-Treated Reciprocating Sequence](https://endo-guide.app/system/perfect-rc-gold)[### NIC W+ NIC Dental (Shenzhen Superline Technology) Reciprocating MaxTech · 5-7% (per file) · 5 files Gold-Wire Reciprocation](https://endo-guide.app/system/nic-w-plus)

## Related Clinical Links

NiTi collections

[Gold Heat Treatment](https://endo-guide.app/niti-files/gold-heat-treated-files)[Reciprocating Systems](https://endo-guide.app/niti-files/reciprocating-file-systems)[Rotary Systems](https://endo-guide.app/niti-files/rotary-file-systems)[Single-Use Systems](https://endo-guide.app/niti-files/single-use-niti-files)

Clinical use cases

[Severe Curvature](https://endo-guide.app/use-case/severe-curvature)[Calcified Canals](https://endo-guide.app/use-case/calcified-canals)

Related alloys

[Blue Heat Treatment](https://endo-guide.app/alloy/blue)[CM-Wire (Controlled Memory)](https://endo-guide.app/alloy/cm-wire)[C.Wire (Controlled Memory)](https://endo-guide.app/alloy/c-wire)[EDM Process (Electrical Discharge Machining)](https://endo-guide.app/alloy/edm)

![Uzm. Dt. Levent Yüksel](https://endo-guide.app/images/levent-yuksel.jpg)

Reviewed by

Uzm. Dt. Levent Yüksel

DDS · Endodontist

Endodontist — DDS, Hacettepe University; endodontics specialty training, Ankara University. 10+ years of clinical experience. Sole author and reviewer of EndoGuide content.

[About the author](https://endo-guide.app/about)[Editorial policy](https://endo-guide.app/editorial-policy)[Clinical profile](https://drleventyuksel.com/)

[Back to all systems](https://endo-guide.app/)

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