title: Angle Class II correction with MARA appliance.
abstract: OBJECTIVE
  To assess the effects produced by the MARA appliance in the treatment of Angle's Class II, division 1 malocclusion.
  
  
  METHODS
  The sample consisted of 44 young patients divided into two groups: The MARA Group, with initial mean age of 11.99 years, treated with the MARA appliance for an average period of 1.11 years, and the Control Group, with initial mean age of 11.63 years, monitored for a mean period of 1.18 years with no treatment. Lateral cephalograms were used to compare the groups using cephalometric variables in the initial and final phases. For these comparisons, Student's t test was employed.
  
  
  RESULTS
  MARA appliance produced the following effects: Maxillary growth restriction, no change in mandibular development, improvement in maxillomandibular relationship, increased lower anterior facial height and counterclockwise rotation of the functional occlusal plane. In the upper arch, the incisors moved lingually and retruded, while the molars moved distally and tipped distally. In the lower arch, the incisors proclined and protruded, whereas the molars mesialized and tipped mesially. Finally, there was a significant reduction in overbite and overjet, with an obvious improvement in molar relationship.
  
  
  CONCLUSIONS
  It was concluded that the MARA appliance proved effective in correcting Angle's Class II, division 1 malocclusion while inducing skeletal changes and particularly dental changes.
authors.affiliation: FOB-USP. kellychiqueto@yahoo.com.br
authors.forename: Kelly
authors.initials: K
authors.lastname: Chiqueto
authors.forename: José Fernando Castanha
authors.initials: JF
authors.lastname: Henriques
authors.forename: Sérgio Estelita Cavalcante
authors.initials: SE
authors.lastname: Barros
authors.forename: Guilherme
authors.initials: G
authors.lastname: Janson
mesh_terms: D000293:Adolescent; D016022:Case-Control Studies; D002508:Cephalometry / Q000379:methods; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D019186:Mandibular Advancement / Q000295:instrumentation* / Q000379:methods; D017289:Orthodontic Appliances, Functional
keywords: Angle’s Class II malocclusion; Functional orthodontic appliances; Mandibular advancement