Angle Class II correction with MARA appliance

• Published in: Dental press journal of orthodontics Vol. 18; no. 1; pp. 35 - 44
• Main Authors: Chiqueto, Kelly, Henriques, José Fernando Castanha, Barros, Sérgio Estelita Cavalcante, Janson, Guilherme
• Format: Journal Article
• Language: English; Portuguese
• Published: Brazil Dental Press International 01.02.2013; Dental Press Editora
• Subjects: Adolescent; Angle's Class II malocclusion; Aparelhos ortodônticos funcionais; Avanço mandibular; Case-Control Studies; Cephalometry - methods; Child; Dentistry; DENTISTRY, ORAL SURGERY & MEDICINE; Female; Functional orthodontic appliances; Humans; Male; Malocclusion, Angle Class II - therapy; Mandibular advancement; Mandibular Advancement - instrumentation; Mandibular Advancement - methods; Má oclusão Classe II de Angle; Orthodontic Appliances, Functional; Angle’s Class II malocclusion; Mandibular advancement; Functional orthodontic appliances; Avanço mandibular; Angle's Class II malocclusion; Má oclusão Classe II de Angle; Aparelhos ortodônticos funcionais
• ISSN: 2176-9451; 2177-6709; 2177-6709; 2176-9451
• DOI: 10.1590/S2176-94512013000100011

To assess the effects produced by the MARA appliance in the treatment of Angle's Class II, division 1 malocclusion. 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. 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. 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.