title: Dentoskeletal effects of a temporary skeletal anchorage device-supported rapid maxillary expansion appliance (TSADRME): A pilot study.
abstract: OBJECTIVE
  To quantitatively evaluate maxillary skeletal expansion using cone-beam computed tomography (CBCT) images and propose a novel way to quantify the dental tipping effects of temporary skeletal anchorage device-supported rapid maxillary expansion appliance (TSADRME).
  
  
  METHODS
  Images from 25 patients receiving rapid maxillary expansion with incorporated temporary skeletal anchorage devices (TSADs) before activation (T1) and after removal (T2) were analyzed to detect dentoskeletal changes.
  
  
  RESULTS
  A significant increase from T1 to T2 was found for all linear measurements except buccal maxillary width at the canines. The greatest buccal expansion was at the first molar, decreasing anteriorly. However, the greatest palatal expansion was at the first premolar. All younger subjects (8-16 years old) exhibited less dental tipping and greater expansion overall compared with the older subjects. There was great variability in dental tipping of first molars (mean = 4.31°), with some subjects demonstrating mild uprighting of these teeth.
  
  
  CONCLUSIONS
  The TSADRME appliance is an effective, clinically useful device that results in mild molar tipping and may positively affect expansion in the area of TSAD placement.
authors.affiliation: a  Resident, Department of Orthodontics, University of Tennessee Health Science Center, College of Dentistry, Memphis, Tenn.
authors.forename: Jason William
authors.initials: JW
authors.lastname: Vassar
authors.affiliation: b  Assistant Professor, Department of Periodontics, University of Tennessee Health Science Center, College of Dentistry, Memphis, Tenn.
authors.forename: Anastasios
authors.initials: A
authors.lastname: Karydis
authors.affiliation: c  Associate Professor and Department Chair, Department of Orthodontics, University of Tennessee Health Science Center, College of Dentistry, Memphis, Tenn.
authors.forename: Terry
authors.initials: T
authors.lastname: Trojan
authors.affiliation: d  Assistant Professor, Department of Orthodontics, University of Tennessee Health Science Center, College of Dentistry, Memphis, Tenn.
authors.forename: Jack
authors.initials: J
authors.lastname: Fisher
mesh_terms: D000293:Adolescent; D002648:Child; D054893:Cone-Beam Computed Tomography; D006801:Humans; D008437:Maxilla; D009967:Orthodontic Appliances; D010155:Palatal Expansion Technique / Q000295:instrumentation*; D010865:Pilot Projects
keywords: Palatal expansion; Temporary skeletal anchorage devices