The Morelli Thermal Nickel Titanium Universal Form Archwires Round are heat-activated NiTi archwires in Universal arch form with a round cross-section. Cold, the wire is malleable and inactive, which makes it easy to tie into crowded arches; at oral temperature it recovers its programmed shape and delivers light, continuous force for alignment and leveling.
Key Features
Thermodynamic Activation — the alloy transforms above 27 °C (80.6 °F), so force delivery begins only after the archwire reaches the oral environment.
Easier Ligation When Cold — the inactive, malleable state allows engagement of severely rotated or displaced teeth without excessive force at placement.
Round Cross-Section — the circular profile leaves torque unexpressed, which is the intended behavior for the initial alignment stage.
Shape Memory — the wire recovers the programmed Universal arch form, generating constant orthodontic force between appointments.
Five Gauges — Ø.012″ through Ø.020″, covering the full round sequence from first archwire to pre-rectangular stage.
High Resistance — resists permanent deformation, keeping the arch shape stable throughout the appointment interval.
Technical Specifications
Material: Heat-activated NiTi (Nickel Titanium)
Arch Form: Universal
Wire Cross-Section: Round
Activation Temperature: Above 27 °C (80.6 °F) — oral environment temperature
Wire Sizes: Ø.012″ (0,30 mm), Ø.014″ (0,35 mm), Ø.016″ (0,40 mm), Ø.018″ (0,46 mm), Ø.020″ (0,50 mm)
Arch: Upper and Lower
Purpose: Orthodontic alignment, rotation and leveling
Certifications: FDA Approved, CE Approved, ISO 9001:2015, ISO 13485:2016
Country of Manufacture: Brazil
Package Includes: 10 Morelli thermal NiTi Universal form round archwires in the selected gauge and arch
Clinical Applications
Initial alignment of crowded arches, where the cold wire can be tied to teeth a superelastic archwire would not reach.
Correction of rotations with light, continuous force and no torque expression.
Leveling before rectangular wires, progressing through the round gauges up to Ø.020″.
Struggling to engage a severely crowded arch?
Start with the round thermal NiTi, which ligates while cold and only then delivers constant, body-temperature force.