title: Comparison of the effects of rapid maxillary expansion  and surgically assisted rapid maxillary expansion  in the sagittal, vertical, and transverse planes.
abstract: OBJECTIVE
  The aim of this study was to evaluate and compare the effects of rapid maxillary expansion (RME) and surgically assisted RME (SARME) in the sagittal, vertical, and transverse planes.
  
  
  METHODS
  Orthodontic records of 28 patients were selected retrospectively and divided into two treatment groups. Group 1 comprised 14 patients (4 boys, 10 girls, mean age 14.2 ± 0.74 years) who had been treated with RME. Group 2 comprised 14 patients (4 boys, 10 girls, mean age 19.6 ± 2.73 years) who had been treated with SARME. Measurements were performed on lateral and posteroanterior cephalograms and dental casts obtained before (T0) and after (T1) expansion.
  
  
  RESULTS
  Statistically significant differences were found in soft tissue convexity angle, anterior face height, and upper nasal width in group 1, and in U1-NA length and posterior face height measurements in group 2 (P<.05). In both groups significant increases were found in interpremolar, intermolar, maxillary, and lower nasal widths and in anterior lower face height (P<.01). Statistically significant intergroup differences were found in the ANB angle (P<.05) and maxillary intercanine (P<.01) measurements.
  
  
  CONCLUSIONS
  With both RME and SARME, successful expansion of maxillary dentoalveolar structures and nasal cavity and palatal widening were achieved. Sagittal plane effects of SARME were similar to those of RME on dental skeletal and airway measurements.
authors.affiliation: Mustafa Kemal Universitesi, Tayfur SÖkmen Kampüsü Araştirma Hastanesi, Hatay 32100 Turkey. aygungor@gmail.com
authors.forename: A-Y
authors.initials: AY
authors.lastname: Gungor
authors.forename: H
authors.initials: H
authors.lastname: Türkkahraman
authors.forename: T
authors.initials: T
authors.lastname: Baykul
authors.forename: H
authors.initials: H
authors.lastname: Alkis
mesh_terms: D000293:Adolescent; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla / Q000601:surgery*; D010155:Palatal Expansion Technique; D012189:Retrospective Studies; D013997:Time Factors; D055815:Young Adult