Effects of surgically assisted rapid palatal expansion with and without pterygomaxillary disjunction on dental and skeletal structures: a retrospective review

• Published in: Oral surgery, oral medicine, oral pathology and oral radiology oral medicine, oral pathology and oral radiology, 2013-02, Vol.115 (2), p.167-174
• Main Authors: Kilic, Erdem, DDS, PhD, Kilic, Banu, DDS, PhD, Kurt, Gokmen, DDS, PhD, Sakin, Caglar, DDS, Alkan, Alper, DDS, PhD
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; Dental Models; Dentistry; Female; Humans; Male; Malocclusion - therapy; Maxilla - abnormalities; Palatal Expansion Technique; Retrospective Studies; Surgery; Treatment Outcome
• ISSN: 2212-4403; 2212-4411
• DOI: 10.1016/j.oooo.2012.02.026

Objective The aim of this study was to evaluate and compare dental and skeletal changes in surgically assisted rapid palatal expansion (SARPE) patients with (+PP) and without (−PP) pterygomaxillary disjunction. Study Design The study casts of 18 maxillary constriction patients indicated for SARPE formed the sample of this retrospective review. The sample was divided into 2 groups. Twenty linear and 2 angular measurements were performed on the study models. Results All transversal measurements increased after expansion in both the +PP and −PP groups. The −PP group showed greater expansion at the midpalatal and gingival levels, while the +PP group exhibited a greater increase of 0.78 mm at the apical base level and 11.25° less tipping in the molar teeth. A greater expansion of nearly 0.7 mm was measured in the premolar region of the +PP group. Conclusions Both SARPE techniques resulted in significant maxillary expansion.