Tags

Type your tag names separated by a space and hit enter

Treatment timing of MARA and fixed appliance therapy of Class II malocclusion.
Eur J Orthod. 2013 Jun; 35(3):394-400.EJ

Abstract

The objective of this study is to evaluate the effect of timing on Mandibular Anterior Repositioning Appliance (MARA) and fixed appliance treatment of Class II malocclusion in a prospective clinical trial. The treated sample consisted of 51 consecutively treated patients at prepubertal (n = 21), pubertal (n = 15), and postpubertal (n = 15) stages of development. Control groups for the three treated groups were generated from growth data of untreated Class II subjects. Lateral cephalograms were digitized and superimposed via cephalometric software at T1 (pre-treatment) and T2 (after comprehensive treatment). The T1-T2 changes in the treated groups were compared to those in their corresponding control groups with Mann-Whitney tests with Bonferroni correction. Mandibular elongation was greater at the pubertal stage (Co-Gn +2.6 mm, with respect to controls). Headgear effect on the maxilla was greater in the pre-peak sample (Co-A -1.9 mm, with respect to controls). Dentoalveolar compensations (proclination of lower incisors, extrusion and mesialization of lower molars, and reduction in the overbite) were significant in the pre-peak and post-peak groups. Optimal timing for Class II treatment with MARA appliance is at the pubertal growth spurt, with enhanced mandibular skeletal changes and minimal dentoalveolar compensations.

Authors+Show Affiliations

Department of Human Morphology, University of Milan, Milan, Italy.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22423185

Citation

Ghislanzoni, Luis Tomas Huanca, et al. "Treatment Timing of MARA and Fixed Appliance Therapy of Class II Malocclusion." European Journal of Orthodontics, vol. 35, no. 3, 2013, pp. 394-400.
Ghislanzoni LT, Baccetti T, Toll D, et al. Treatment timing of MARA and fixed appliance therapy of Class II malocclusion. Eur J Orthod. 2013;35(3):394-400.
Ghislanzoni, L. T., Baccetti, T., Toll, D., Defraia, E., McNamara, J. A., & Franchi, L. (2013). Treatment timing of MARA and fixed appliance therapy of Class II malocclusion. European Journal of Orthodontics, 35(3), 394-400. https://doi.org/10.1093/ejo/cjs023
Ghislanzoni LT, et al. Treatment Timing of MARA and Fixed Appliance Therapy of Class II Malocclusion. Eur J Orthod. 2013;35(3):394-400. PubMed PMID: 22423185.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Treatment timing of MARA and fixed appliance therapy of Class II malocclusion. AU - Ghislanzoni,Luis Tomas Huanca, AU - Baccetti,Tiziano, AU - Toll,Douglas, AU - Defraia,Efisio, AU - McNamara,James A,Jr AU - Franchi,Lorenzo, Y1 - 2012/03/15/ PY - 2012/3/17/entrez PY - 2012/3/17/pubmed PY - 2014/4/15/medline SP - 394 EP - 400 JF - European journal of orthodontics JO - Eur J Orthod VL - 35 IS - 3 N2 - The objective of this study is to evaluate the effect of timing on Mandibular Anterior Repositioning Appliance (MARA) and fixed appliance treatment of Class II malocclusion in a prospective clinical trial. The treated sample consisted of 51 consecutively treated patients at prepubertal (n = 21), pubertal (n = 15), and postpubertal (n = 15) stages of development. Control groups for the three treated groups were generated from growth data of untreated Class II subjects. Lateral cephalograms were digitized and superimposed via cephalometric software at T1 (pre-treatment) and T2 (after comprehensive treatment). The T1-T2 changes in the treated groups were compared to those in their corresponding control groups with Mann-Whitney tests with Bonferroni correction. Mandibular elongation was greater at the pubertal stage (Co-Gn +2.6 mm, with respect to controls). Headgear effect on the maxilla was greater in the pre-peak sample (Co-A -1.9 mm, with respect to controls). Dentoalveolar compensations (proclination of lower incisors, extrusion and mesialization of lower molars, and reduction in the overbite) were significant in the pre-peak and post-peak groups. Optimal timing for Class II treatment with MARA appliance is at the pubertal growth spurt, with enhanced mandibular skeletal changes and minimal dentoalveolar compensations. SN - 1460-2210 UR - https://www.unboundmedicine.com/medline/citation/22423185/Treatment_timing_of_MARA_and_fixed_appliance_therapy_of_Class_II_malocclusion_ L2 - https://academic.oup.com/ejo/article-lookup/doi/10.1093/ejo/cjs023 DB - PRIME DP - Unbound Medicine ER -