- Material: Stainless Steel
- Purpose: Used for dentoalveolar arch expansion in cases of moderate to severe lower crowding; also known as a “Williams Expander” alternative
- Expansion Length: 9.0mm and 11.0mm
- Qualities: Compact design, Precise activation, Low profile, Corrosion‑resistant, Smooth finish
- Certification: FDA Approved, CE Approved, ISO (9001:2008), MEDICAL ISO (13485:2003)
- Country of Manufacture: Brazil
- Package Includes: Morelli Micro Expander and Safety Swivel Key
The Micro Expander by Morelli is a compact stainless steel screw expander designed to promote controlled dentoalveolar expansion. With an activation range of up to 9 mm, it is ideal for correcting transverse deficiencies and creating space in crowded mandibular arches. This expander can be installed lingually on anterior teeth and is supported by arms welded to orthodontic bands. It serves as an efficient and minimally invasive option, widely referenced in clinical practice and often compared to the Williams Expander.