title: Effects of surgically assisted rapid palatal expansion with and without pterygomaxillary disjunction on dental and skeletal structures: a retrospective review.
abstract: 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.
  
  
  METHODS
  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.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Erciyes University, Kayseri, Turkey. ekilic@erciyes.edu.tr
authors.forename: Erdem
authors.initials: E
authors.lastname: Kilic
authors.forename: Banu
authors.initials: B
authors.lastname: Kilic
authors.forename: Gokmen
authors.initials: G
authors.lastname: Kurt
authors.forename: Caglar
authors.initials: C
authors.lastname: Sakin
authors.forename: Alper
authors.initials: A
authors.lastname: Alkan
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000628:therapy*; D008437:Maxilla / Q000002:abnormalities; D003765:Models, Dental; D010155:Palatal Expansion Technique; D012189:Retrospective Studies; D016896:Treatment Outcome