The Morelli Stainless Steel Universal Form Round Archwires are CrNi (nickel-chromium) orthodontic archwires produced in a universal arch form for the alignment, rotation and leveling phases of fixed appliance therapy. Their round cross-section engages the bracket slot only partially, so the wire guides the crowns into the arch without expressing torque.
Key Features
High tensile strength — the CrNi alloy holds its form under occlusal load and resists permanent deformation during activation.
Corrosion resistance — chromium forms a thin passive oxide layer that blocks oxygen diffusion into the alloy.
Reduced friction — a polished surface lowers resistance inside the bracket slot and supports efficient sliding mechanics.
Good formability — accepts stops, loops and chairside bends without fracturing.
Round section, no torque expression — a round wire cannot fill the slot in both dimensions, so it does not express torque at any diameter. Torque control requires a rectangular wire.
Upper and lower supplied separately — each diameter is available as a distinct upper archwire or lower archwire.
Technical Specifications
Material: Stainless Steel CrNi (Nickel-Chromium)
Arch Form: Universal
Section: Round
Wire Sizes: Ø.012″ (0,30 mm), Ø.014″ (0,35 mm), Ø.016″ (0,40 mm), Ø.018″ (0,46 mm), Ø.020″ (0,51 mm)
Arch Options: Upper or Lower, selected per unit
Purpose: Alignment, rotation and leveling during the initial phase of orthodontic treatment
Certifications: FDA Approved, CE Approved, ISO 9001:2015, ISO 13485:2016
Country of Manufacture: Brazil
Package Includes: 10 Morelli CrNi stainless steel round archwires in the selected diameter (Ø.012″, Ø.014″, Ø.016″, Ø.018″ or Ø.020″) and the selected arch (upper or lower)
Clinical Applications
Initial alignment and leveling of crowded or rotated teeth at the start of fixed appliance therapy.
Progressive wire sequencing from the lightest diameter upward, raising stiffness as the arch resolves.
Arch stabilization and space maintenance in the heavier diameters, where formability allows stops and loops to be bent chairside.
Why choose Morelli stainless steel round archwires?
Because the leveling phase depends on wires that behave the same way every time. These archwires deliver predictable stiffness, corrosion resistance and consistent forming across five diameters, each one available as a separate upper or lower archwire.