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Updated: May 19, 2026

Finite Element Analysis Model for Assessing Expansion Patterns from Surgically Assisted Rapid Palatal Expansion
Published on: October 20, 2023
European College of Orthodontics: Commission on Membership and Tenure
1magalimujagic@free.fr
Abstract:
A. PRE-TREATMENT RECORDS: 1/6/2007; 11 year and 6 months.
Diagnosis:
Class II, division 1 malocclusion associated with severe overbite; skeletal hypodivergency; complete set of teeth.
Treatment:
Customized Incognito(®) bi-maxillary multi-bracket appliance with a series of ribbonwise archwires (dimension: .025 ×.018''); levelling; correction of the anteroposterior dimension using a Herbst appliance; finishings with .0182 ×.0182 βtitanium; retention. B. END OF TREATMENT RECORDS: 2/1/2010; 14 years and 11 months.
Retention:
Wires bonded from 13 to 23 and from 33 to 43 combined with an Andreasen activator at night; monitoring of possible evolution of third molars. C. END OF RETENTION RECORDS: 18/5/2011; 15 years and 4 months.
Clinical Observations:
Extra-oral examination: frontal view: slight predominance of the mid third, thin upper lip; lateral view: convexity, open nasolabial angle, retrusive chin and pronounced naso-labial fold. Patient consulted for the position of her anterior teeth which she thought to be "sticking out". Endo-oral examination: no crowding on either arch; Angle Class II relationships; pronounced anteroposterior overjet; pronounced overbite. Dental panorex: complete set of teeth; second molars unerupted.
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