MSE

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

Contraindications

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

4 Turns = 0.8mm(1 revolution)
Ex) MSE-8 means its expansion size is 8mm = 40 turns

Early teens        :3 turns / week(0.60mm /week)
Late teens         :1 turns / day(0.20mm /day)
Early to Mid-20’s: 2~3 turns / day(0.40~0.60mm/day)
Older                :Minimum 2~3 turns /day, assistance PRN
After Diastema    : 1 turns / day(0.20mm / Day)

6 Turns = 0.8mm(1 revolution)
Ex) MSEⅡ-12 means its expansion size is 12mm = 90 turns

Early teens        :6 turns / week(0.80mm /week)
Late teens         :2 turns / day(0.27mm /day)
Early to Mid-20’s: 4~6 turns / day(0.53~0.80mm/day)
Older                :Minimum 4~6 turns /day
After Diastema    : 2 turns / day(0.27mm / Day)