Examinando por Autor "Dumas León, María Belén"
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- ÍtemSolo MetadatosCambios dentoesqueletales de la expansión rápida maxilar y máscara facial en maloclusión clase III: revisión de la literatura y reporte de caso(Universidad Católica de Cuenca., 2023) Dumas León, María Belén; Lima Illescas, Miriam Verónica; 0105752620Objective: To review scientific literature to verify dental and skeletal changes of Rapid Maxillary Expans and facial mask in Class III malocclusions and to report on a clinical case’s dental and skeletal results. Materials and methods: A search was made in online databases such as PubMed, Scopus, BVS Regional, SciELO, Redalyc, and Web of Science, obtaining a total of 32 articles that matched the inclusion and exclusion criteria. The keywords included were: "Malocclusion," "Angle Class III Malocclusion," and "Corrective Orthodontics." Results: The therapy includes an expansion phase, placing an orthopedic appliance (Hyrax) to separate the maxillary sutures. Subsequently, the protraction phase begins with the positioning of the facial mask, aiming to bring the maxilla forward and downward. Dental changes in the sagittal direction were a positive overjet of 1 mm, neutral canine relation, and an overjet of 0.4 mm in the vertical direction. The Alt-RAMEC protocol was applied, correcting the crossbite and increasing the upper and lower dental arch length by 6 mm. Skeletal changes were SNA angle increased by 2.2°, SNB remained the same, the incisal angle decreased by 6 mm, and the ANB angle increased by 2.4°. Conclusion: The described changes were achieved by applying rapid maxillary expansion and a facial mask, which are considered one of the most common therapies to correct Class III malocclusions in early mixed dentition.