title: Cephalometric evaluation of Haas and Hyrax rapid maxillary appliances in the treatment of the skeletal maxillary transverse deficiency.
abstract: Two different rapid palatal expansion appliances were compared, using lateral cephalograms, anterio-posterior cephalograms and diagnostic models. The Haas appliance was used on ten patients and the Hyrax appliance on another ten. A difference in the effect of the two appliances was found only for the increase in intermolar distance. This difference could be the result of the different appliance design.
authors.affiliation: Department of Orthodontics, Faculty of Dentistry, Marmara University, Istanbul, Türkiye.
authors.forename: N
authors.initials: N
authors.lastname: Erverdi
authors.forename: A
authors.initials: A
authors.lastname: Sabri
authors.forename: N
authors.initials: N
authors.lastname: Küçükkeleş
mesh_terms: D000293:Adolescent; D000328:Adult; D002508:Cephalometry / Q000706:statistics & numerical data; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000175:diagnosis* / Q000628:therapy*; D008437:Maxilla / Q000002:abnormalities*; D010155:Palatal Expansion Technique / Q000295:instrumentation* / Q000706:statistics & numerical data; D013997:Time Factors