The Morelli Nickel-Titanium Distalizing Spring is a nickel-titanium open coil supplied in 178 mm sticks, three to a pack, for distalization mechanics. Compressed on the archwire against an anchorage point, it drives the posterior segment distally with a light and continuous force that stays working between appointments.
Key Features
Distalizing action — the coil is compressed along the archwire to push the posterior segment distally
Nickel-titanium construction — NiTi wound as an open-pitch coil
Light, continuous force — a low-magnitude load delivered continuously rather than as an initial peak
Longer activation intervals — the load persists across the deactivation range, reducing how often the spring has to be reset
178 mm sticks — three sticks per pack, cut to the length the distalization mechanic calls for
Cut at the closed spiral — trimming the stick at a closed spiral keeps an open spiral tip off the segment
Technical Specifications
Material: NiTi (nickel-titanium)
Type: Open coil, compression
Length: 178 mm (7.0″) per stick
Quantity: 3 sticks
Purpose: Deliver light continuous compressive force for distalization and space opening
Certifications: FDA Approved, CE Approved, ISO 9001:2015, ISO 13485:2016
Country of Manufacture: Brazil
Package Includes: 3 Morelli nickel-titanium distalizing spring sticks, 178 mm (7.0″) each
Clinical Applications
Molar distalization — driving the molar distally along the archwire against an anchorage point
Space recovery in the posterior segment — reopening room behind the teeth being aligned
Mechanics that call for a sustained low-magnitude force over long activation periods
Distalizing with a nickel-titanium coil?
Compress the stick between the anchorage point and the molar and let it work — a continuous force across the whole activation range.