The Morelli Rapid Palatal Expander is a Hyrax-type palatal expansion screw indicated for correcting deficient maxillomandibular relationships. Built entirely in stainless steel and driven by a central screw, this model provides a 7 mm expansion range, matched to the transverse discrepancy of the case.
Key Features
7 mm expansion range — supplied as one individual screw.
Hyrax central-screw design — activation is applied to a single central body, keeping the expansion vector symmetrical.
Flexible arms — adapt to different palatal morphologies during appliance assembly.
Stainless steel construction — high resistance to the repeated loads of a rapid expansion protocol.
Smooth, controlled activation — the screw advances progressively for predictable transverse movement.
Long-stem activation key included — 100 mm stem, allowing the screw to be activated safely and conveniently.
Technical Specifications
Material: Stainless steel
Type: Hyrax palatal expansion screw, central-screw activation
Expansion Range: 7 mm
Activation Key: Long stem, 100 mm
Purpose: Transverse expansion and disjunction of the maxillary arch
Certifications: FDA Approved, CE Approved, ISO 9001:2015, ISO 13485:2016
Country of Manufacture: Brazil
Package Includes: One (1) 7 mm Hyrax palatal expansion screw and one (1) long-stem activation key
Clinical Applications
Early mixed or permanent dentition cases requiring transverse correction of the maxilla.
Bilateral posterior crossbite resulting from a deficiency of the maxillary apical base.
Anterior or posterior crossbite of mild to moderate severity.
Why choose the Morelli Rapid Palatal Expander?
A 7 mm expansion range, a stainless steel body and an included long-stem activation key make it a chairside-ready solution for rapid maxillary expansion.