Maxillary Skeletal Expansion (MSE)

Advanced Lightwire Functional Appliance (ALF)
Biobloc Orthotropics
Expanders

What is Maxillary Skeletal Expansion (MSE)?

Maxillary transverse deficiency (narrow upper jaw) is a highly prevalent orthodontic problem present in all age groups. For children and early teens with this narrow upper jaw, it can easily be widened with a palatal expander, as their upper jaw is in two pieces and not fully fused in the middle. For mature patients and adults, however, a palatal expander often will result in unwanted flaring of posterior teeth instead of skeletal expansion. Typically, adults with a narrow upper jaw with bite problems were subjected to an invasive surgical procedure — surgically-assisted rapid palatal expansion (SARPE) — to correct this condition. Maxillary Skeletal Expander (MSE), it is a type of MARPE, and patients who use it can forgo surgery with the use of four TADs in the palate. Developed by one of Dr. Roca’s mentors, Dr. Won Moon, MSE offers a non-invasive way of correcting maxillary transverse deficiency for patients who were previously told that they would need surgical intervention. We can also attach a reverse pull facemask to try to get some saggital growth as well. Dr Roca has also studied Dr Richard Singh and Dr Rebecca Brokow’s MSE techinique as well. Dr. Roca says placing MSE is much easier than implants since no dangerous structures are in our way. Even corticopunture is surprisingly quick and painless.

MSE II ActivationEarly Teens: 6x/week (0.80mm/wk)Late Teens: 2x/day (0.27mm/day)

Early to Mid 20’s: 4-6x/day (0.53-0.80mm/day)

Older: Min 4-6x/day

After Diastema: 2x/day (0.27mm/day)

Patient’s Biotype Must Be Considered!

  • Initial penetration with force
  • Relatively easier insertion after the first layer of cortical bone
  • Tighter insertion when the second layer of cortical bone is being penetrated
  • Slight release of tightness and tickling sensation in the nose
  • Complete insertion: no significant complications

Slow Expansion

  • Trans-septal fibers keep crowns together: No Diastema
  • V-shaped Expansion Minimized!
  • Less Peri-Maxillary Changes
  • Airway Treatment and FM: Rapid may be better
  • Lower Failure

Rapid Expansion

  • Trans-septal fibers get stretched by overwhelming force: Diastema
  • Parallel Expansion
  • Signficant Per-Maxillary Changes
  • Great for Airway Treatment and FM
  • More Breakage of MSE

Call for a consultation at 703-237-7622 to determine if you or anyone in your family is a candidate for any of our orthodontic options.