title: Evaluations of sagittal and vertical changes induced by surgically assisted rapid palatal expansion.
abstract: BACKGROUND
  Class II, anterior open bite and/or a steep mandibular plane angle are frequently considered a contraindication to the use of surgically assisted rapid palatal expansion (SARPE). Nevertheless, few studies have investigated the maxillary and mandibular effects after SARPE on the sagittal and vertical planes, with dissimilar results and small samples of patients.The aim of the current study was to evaluate the sagittal and vertical effects after SARPE.
  
  
  METHODS
  Twenty-one consecutive adult patients (7 males, 14 females; mean age, 25.6 ± 6.3 years) who required SARPE were included in this study. All patients were subjected to subtotal LeFort I osteotomy with pterygomaxillary disjunction. Lateral cephalometric radiographs were taken during the preoperative assessment (T0) and 6 months after the end of the expansion (T1). Cephalometric measurements were realized at T0 and T1 for all the patients. Independent-sample t test and analysis of variance were used.
  
  
  RESULTS
  Statistically significant changes were observed only in upper incisor^NA (P = 0.04). No skeletal sagittal or vertical variation was found after SARPE.
  
  
  CONCLUSIONS
  Class II, anterior open bite and/or a steep mandibular plane angle cannot be considered an outright contraindication to its use. Upper incisor palatal inclination could result after SARPE.
authors.affiliation: Section of Orthodontics and Gnathology, Department of Dental and Maxillo-Facial Sciences, University of Naples Federico II, Naples, Italy.
authors.forename: Giorgio
authors.initials: G
authors.lastname: Iodice
authors.forename: Tecla
authors.initials: T
authors.lastname: Bocchino
authors.forename: Matteo
authors.initials: M
authors.lastname: Casadei
authors.forename: Domenico
authors.initials: D
authors.lastname: Baldi
authors.forename: Massimo
authors.initials: M
authors.lastname: Robiony
mesh_terms: D000328:Adult; D002508:Cephalometry / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007180:Incisor / Q000473:pathology; D008297:Male; D008312:Malocclusion, Angle Class II / Q000601:surgery / Q000628:therapy; D008334:Mandible / Q000473:pathology; D008437:Maxilla / Q000473:pathology / Q000601:surgery*; D009295:Nasal Bone / Q000473:pathology; D024343:Open Bite / Q000601:surgery / Q000628:therapy; D016382:Orthodontic Appliance Design; D019340:Osteotomy, Le Fort / Q000379:methods*; D010155:Palatal Expansion Technique / Q000295:instrumentation; D056739:Pterygopalatine Fossa / Q000601:surgery; D012658:Sella Turcica / Q000473:pathology; D016896:Treatment Outcome; D055815:Young Adult