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South African Dental Journal

versão On-line ISSN 0375-1562
versão impressa ISSN 0011-8516

Resumo

WEBER, JH; BOTHA, P  e  DAWJEE, SH. The Mandibular Anterior Repositioning Appliance (MARA) - A report of three cases. S. Afr. dent. j. [online]. 2019, vol.74, n.10, pp.561-570. ISSN 0375-1562.  http://dx.doi.org/10.17159/2519-0105/2019/v74no10a7.

INTRODUCTION: The MARA (Mandibular Anterior Repositioning Appliance) is a fixed functional appliance used in the treatment of mandibular deficiencies. AIMS AND OBJECTIVES: To demonstrate the clinical capabilities, treatment effects and the expected duration of treatment when using the MARA, therefore creating awareness of the MARA as a treatment alternative to other functional appliances designed for correction of Class II malocclusions. METHODS: A retrospective study exploring the anteroposterior dimensional changes in the maxilla and mandible brought about by the MARA and the associated treatment time. The samples were the first three cases treated by a clinician inexperienced with the clinical application of the MARA and served as an ideal introduction to the treatment technique. RESULTS: In this study mandibular growth stimulation and tem-poromandibular joint remodeling may have been the main contributing factors in the resolution/improvement of the Class II malocclusions under treatment. CONCLUSION: The MARA is a useful non-compliance appliance that produces exceptional treatment results when applied in combination with full fixed appliances. The changes observed were predominantly of a skeletal nature in the anteroposterior dimension. Maxillary growth restriction may also have played a role in the correction of these treated Class II abnormalities.

Palavras-chave : MARA; Mandibular changes; Maxillary changes; SNA; SNB; ANB; WITS; Y-axis; Tweed angle; Facial angle; Mandibular growth.

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