The Morelli Universal Screw 9 mm is an orthodontic expansion screw available as a single unit or in packs of 10 for use in fixed or removable appliances. Progressive activation of its central screw delivers 9 mm of total opening, supporting expansion or disjunction of the dental arches.
Key Features
9 mm total opening โ full activation range for progressive transverse correction.
Compact body โ 14 x 8 x 3.5 mm, sized for appliances with limited intra-arch space.
Central-screw activation โ the opening advances gradually with each activation.
Anti-reverse mechanism โ prevents the screw from returning after it has been activated.
Secure locking system โ holds the opening at the position reached after each activation.
Fixed or removable appliances โ universal geometry for either laboratory design.
Activation key included โ short stem, 22.8 mm.
Two pack sizes โ available as a single unit or as a pack of 10.
Technical Specifications
Material: Stainless steel
Total Opening: 9 mm
Body Dimensions: 14 x 8 x 3.5 mm
Activation Key: Short stem, 22.8 mm
Pack Size Options: 1 unit ยท 10 units
Purpose: Expansion or disjunction of the dental arches in fixed or removable appliances
Certifications: FDA Approved, CE Approved, ISO 9001:2015, ISO 13485:2016
Country of Manufacture: Brazil
Package Includes: 1-unit pack: one (1) Morelli Universal Expansion Screw 9 mm and one (1) short-stem activation key ยท 10-unit pack: ten (10) Morelli Universal Expansion Screws 9 mm and ten (10) short-stem activation keys
Clinical Applications
Dental arch expansion with fixed or removable appliances.
Posterior crossbite correction requiring progressive transverse gain.
Arch preparation ahead of comprehensive orthodontic treatment.
Does your appliance design call for a 9 mm expansion range?
A stainless steel body with an included short-stem key gives the laboratory a screw ready to be embedded and activated.