The Morelli Universal Screw 7 mm is a compact expansion screw for fixed or removable appliances, available as a single unit or in packs of 10. It delivers up to 7 mm of total opening through progressive activation of its central screw, making it a versatile choice for expanding or disjuncting the dental arches.
Key Features
7 mm total opening โ full activation range for progressive transverse correction.
Compact body โ 12 ร 8 ร 3.5 mm, suitable for appliances with limited intra-arch space.
Stainless steel construction โ stable under load and resistant to repeated activation.
Anti-reverse mechanism โ prevents unintended loss of activation between appointments.
Secure locking system โ keeps the screw stable once embedded in the appliance.
Fixed or removable appliances โ universal geometry for either laboratory design.
Short-stem activation key included โ 22.8 mm stem.
Two pack sizes โ available as a single unit or as a pack of 10.
Technical Specifications
Material: Stainless steel
Total Opening: 7 mm
Body Dimensions: 12 ร 8 ร 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 7 mm and one (1) short-stem activation key ยท 10-unit pack: ten (10) Morelli Universal Expansion Screws 7 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.
Why choose the Morelli Universal Screw 7 mm?
A compact stainless steel body, anti-reverse control and an included activation key deliver precise, retention-free expansion in any appliance design.