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Treatment effects of the mandibular anterior repositioning appliance on patients with Class II malocclusion.
Am J Orthod Dentofacial Orthop. 2003 Mar; 123(3):286-95.AJ

Abstract

The mandibular anterior repositioning appliance (MARA) is a tooth-borne functional appliance for use in patients with Class II malocclusions; it positions the mandible forward into a Class I occlusion. The aim of this study was to investigate the MARA's dental and skeletal effects on anterior, posterior, and vertical changes in 30 Class II patients. The treatment group consisted of 12 boys with an average age of 11.2 years and 18 girls with an average age of 11.3 years. A pretreatment cephalometric radiograph was taken 2 weeks before treatment, and a posttreatment cephalometric radiograph was taken 6 weeks after removal of the MARA, with an average treatment time of 10.7 months. The mean and standard deviation were calculated for each cephalometric variable, and Student t tests were performed to determine the statistical significance of the changes. The results of the study showed that the MARA produced measurable treatment effects on the skeletal and dental elements of the craniofacial complex. These effects included a considerable distalization of the maxillary molar, a measurable forward movement of the mandibular molar and incisor, a significant increase in mandibular length, and an increase in posterior face height. The effects of the MARA treatment were then compared with those of the Herbst and Fränkel appliances. The treatment results of the MARA were very similar to those produced by the Herbst appliance but with less headgear effect on the maxilla and less mandibular incisor proclination than observed in the Herbst treatment group.

Authors+Show Affiliations

Department of Orthodontics, School of Dentistry, University of Detroit Mercy, Detroit, MI, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Comparative Study
Controlled Clinical Trial
Journal Article

Language

eng

PubMed ID

12637901

Citation

Pangrazio-Kulbersh, Valmy, et al. "Treatment Effects of the Mandibular Anterior Repositioning Appliance On Patients With Class II Malocclusion." American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, vol. 123, no. 3, 2003, pp. 286-95.
Pangrazio-Kulbersh V, Berger JL, Chermak DS, et al. Treatment effects of the mandibular anterior repositioning appliance on patients with Class II malocclusion. Am J Orthod Dentofacial Orthop. 2003;123(3):286-95.
Pangrazio-Kulbersh, V., Berger, J. L., Chermak, D. S., Kaczynski, R., Simon, E. S., & Haerian, A. (2003). Treatment effects of the mandibular anterior repositioning appliance on patients with Class II malocclusion. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 123(3), 286-95.
Pangrazio-Kulbersh V, et al. Treatment Effects of the Mandibular Anterior Repositioning Appliance On Patients With Class II Malocclusion. Am J Orthod Dentofacial Orthop. 2003;123(3):286-95. PubMed PMID: 12637901.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Treatment effects of the mandibular anterior repositioning appliance on patients with Class II malocclusion. AU - Pangrazio-Kulbersh,Valmy, AU - Berger,Jeffrey L, AU - Chermak,David S, AU - Kaczynski,Richard, AU - Simon,Eugene S, AU - Haerian,Andre, PY - 2003/3/15/pubmed PY - 2003/4/4/medline PY - 2003/3/15/entrez SP - 286 EP - 95 JF - American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics JO - Am J Orthod Dentofacial Orthop VL - 123 IS - 3 N2 - The mandibular anterior repositioning appliance (MARA) is a tooth-borne functional appliance for use in patients with Class II malocclusions; it positions the mandible forward into a Class I occlusion. The aim of this study was to investigate the MARA's dental and skeletal effects on anterior, posterior, and vertical changes in 30 Class II patients. The treatment group consisted of 12 boys with an average age of 11.2 years and 18 girls with an average age of 11.3 years. A pretreatment cephalometric radiograph was taken 2 weeks before treatment, and a posttreatment cephalometric radiograph was taken 6 weeks after removal of the MARA, with an average treatment time of 10.7 months. The mean and standard deviation were calculated for each cephalometric variable, and Student t tests were performed to determine the statistical significance of the changes. The results of the study showed that the MARA produced measurable treatment effects on the skeletal and dental elements of the craniofacial complex. These effects included a considerable distalization of the maxillary molar, a measurable forward movement of the mandibular molar and incisor, a significant increase in mandibular length, and an increase in posterior face height. The effects of the MARA treatment were then compared with those of the Herbst and Fränkel appliances. The treatment results of the MARA were very similar to those produced by the Herbst appliance but with less headgear effect on the maxilla and less mandibular incisor proclination than observed in the Herbst treatment group. SN - 0889-5406 UR - https://www.unboundmedicine.com/medline/citation/12637901/Treatment_effects_of_the_mandibular_anterior_repositioning_appliance_on_patients_with_Class_II_malocclusion_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889540602569286 DB - PRIME DP - Unbound Medicine ER -