Long-term effects produced by early treatment of Class III malocclusion with rapid maxillary expansion and facemask followed by fixed appliances: A multicentre retro-prospective controlled study.

Autor: Rutili V; Graduate Orthodontic Program, Department of Experimental and Clinical Medicine, The University of Florence, Florence, Italy., Souki BQ; Graduate Orthodontic Program, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Brazil., Nieri M; Graduate Orthodontic Program, Department of Experimental and Clinical Medicine, The University of Florence, Florence, Italy., Carlos ALFM; Graduate Orthodontic Program, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Brazil., Pavoni C; Department of Faculty of Medicine and Surgery, UniCamillus, International Medical University, Rome, Italy., Cozza P; Department of Faculty of Medicine and Surgery, UniCamillus, International Medical University, Rome, Italy., McNamara JA Jr; Department of Orthodontics and Pediatric Dentistry, School of Dentistry and Center for Human Growth and Development, The University of Michigan, Ann Arbor, Michigan, USA., Giuntini V; Graduate Orthodontic Program, Department of Experimental and Clinical Medicine, The University of Florence, Florence, Italy., Franchi L; Graduate Orthodontic Program, Department of Experimental and Clinical Medicine, The University of Florence, Florence, Italy.
Jazyk: angličtina
Zdroj: Orthodontics & craniofacial research [Orthod Craniofac Res] 2024 Jun; Vol. 27 (3), pp. 429-438. Date of Electronic Publication: 2023 Dec 26.
DOI: 10.1111/ocr.12748
Abstrakt: Objective: To assess the short- and long-term dentoskeletal effects of early Class III treatment with rapid maxillary expansion and facemask (RME/FM) followed by fixed appliances.
Materials and Methods: A total of 44 patients (27 females, 17 males) treated consecutively with RME/FM were included from the archives of 3 centres. Three lateral cephalograms were available: T0 (before the start of RME/FM therapy, mean age 8.1 ± 1.8 years), T1 (immediately after RME/FM, mean age 9.8 ± 1.6 years), and T2 (long-term observation, mean age 19.5 ± 1.6 years). A control group of 17 untreated Class III subjects (12 females and 5 males) also was selected. Between-group statistical comparisons were performed with ANCOVA.
Results: No statistically significant differences for any of the cephalometric variables were found at T0. In the short term, the treated group showed significant improvements in ANB (+2.9°), Wits appraisal (+2.7 mm), SNA (+1.8°) and SNB (-1.1°). A significant closure of CoGoMe angle (-1.3°) associated with smaller increments along Co-Gn (-2.4 mm) also was found together with a significant increase in intermaxillary divergence (+1.3°). In the long-term, significant improvements in ANB (+2.6°), Wits appraisal (+2.7 mm) and SNB (-1.7°) were recorded together with a significant closure of the CoGoMe angle (-2.9°). No significant long-term changes in vertical skeletal relationships were found.
Conclusions: RME/FM therapy was effective in improving Class III dentoskeletal relationships in the short term. These changes remained stable in the long-term due mainly to favourable mandibular changes.
(© 2023 The Authors. Orthodontics & Craniofacial Research published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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