NiTi Alloy

# MaxWire

MaxWire is FKG Dentaire's proprietary shape-memory alloy used in the XP-endo family. The unique B-phase (beta titanium) transformation behavior gives MaxWire a superelastic martensitic state at room temperature (15–20°C) and an austenitic state at body temperature (37°C). In practice, the XP-endo Shaper has an ISO 30/01 shape at room temperature and expands to a large working shape in the canal at body temperature, contacting canal walls without transported forces. This adaptive expansion into canal irregularities—fins, lateral canals, oval cross-sections—provides three-dimensional shaping that conventional fixed-taper files cannot achieve.

## Metallurgical Properties

Af Temperature~35–40°C (B-phase transform)

Phase at 37°CAustenite (expanded working shape)

FlexibilityExtreme (expands to fill canal)

Cyclic FatigueModerate (single-use recommended)

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

## Systems Using MaxWire

[### XP-endo Shaper FKG Dentaire Rotary MaxWire · 1% (expands to at least 4%) · 2 files Adaptive Core](https://endo-guide.app/system/xp-endo-shaper)[### XP-endo Finisher FKG Dentaire Rotary MaxWire · 0% (zero taper) · 3 files 3D Canal Cleaning](https://endo-guide.app/system/xp-endo-finisher)[### XP-endo Retreatment FKG Dentaire Rotary MaxWire · variable · 3 files Adaptive Retreatment Sequence](https://endo-guide.app/system/xp-endo-retreatment)[### XP-endo Rise FKG Dentaire Rotary MaxWire · 4% · 2 files 2-in-1 Agile Spirit](https://endo-guide.app/system/xp-endo-rise)

## Related Clinical Links

NiTi collections

[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

[Gold Heat Treatment](https://endo-guide.app/alloy/gold)[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)

![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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