Maxillary Skeletal Expander


MSE Lab Works

1. MSE Position: Posterior Palatal Vault Between 1st and  2nd Molars in Order to Direct the Expansion Force Against the Buttress Bones.
2. MSE Should Be Positioned Slightly Anterior to the Soft Palate

Bi-Cortical Engagement

Maxillary Skeletal Expander

Benefits & Contraindications

  • Vertical Control in High Angle Cases
  • Significant Increase in Upper Airway Volume: Nasal Obstruction, Sleep Apnea
  • Mostly Skeletal Expansion: Less Bone Bending and Dental Tipping Compared to RPE and SARPE
  • Less Invasive than SARPE and Orthognathic Surgery
  • FM and MSE for Class III Correction
  • MSE Causes Expansion of the Surrounding Structures
  • MSE Can Be Used for Mature Patients


  • Extremely narrow palatal vault
  • Patients with previous mid-facial trauma
  • Extremely thick/dense palatal bone and/or dense buttress bone
  • Extremely thin palate with low bone density

Activation Protocol

Maxillary Skeletal Expander


Maxillary Skeletal Expander

Clinical cases