Dentoskeletal changes due to rapid maxillary expansion in growing patients with tooth-borne and tooth-bone-borne expanders: A randomized clinical trial.

Autor: Pasqua BPM; Department of Orthodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil., André CB; Technology Research Center, University of Mogi das Cruzes, Mogi das Cruzes, Brazil., Paiva JB; Department of Orthodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil., Tarraf NE; Discipline of Orthodontics, Faculty of Dentistry, University of Sydney, Sydney, NSW, Australia., Wilmes B; Department of Orthodontics, University of Düsseldorf, Düsseldorf, Germany., Rino-Neto J; Department of Orthodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil.
Jazyk: angličtina
Zdroj: Orthodontics & craniofacial research [Orthod Craniofac Res] 2022 Nov; Vol. 25 (4), pp. 476-484. Date of Electronic Publication: 2022 Jan 06.
DOI: 10.1111/ocr.12559
Abstrakt: Objectives: To compare, using cone-beam computed tomography, the dentoskeletal changes in rapid maxillary expansion with tooth-bone-borne (Hybrid Hyrax) and tooth-borne (Hyrax) appliances.
Setting and Sample Population: Forty-two patients who met the eligibility criteria (aged 11-14 years; transverse maxillary deficiency, posterior crossbite, and presence of upper first premolars and molars) were screened and allocated into two groups: HHG (treatment with Hybrid Hyrax) and HG (treatment with Hyrax).
Main Outcome Measures: The primary outcomes included nasomaxillary dimensional changes. CBCT was performed before and 3 months after the activation phase. Measurements were performed using Dolphin ® . Baseline data were compared using one-way ANOVA. For intergroup comparison, ANCOVA was used to analyze the initial age, appliance activations (mm), and mid-palatal suture maturation data as covariates. Statistical significance was set at 5%.
Results: The premolar region in HHG showed increased skeletal changes than in HG, with the difference being 1.5 mm (0.5; 2.6) in the nasal cavity (P = .004), 1.4 mm (0.3; 2.5) in the nasal floor (P = .019), and 1.1 mm (0.2; 2.1) in the maxilla (P = .022). The molar region in HHG showed increased skeletal changes with the difference being 0.9 mm (0.2; 1.5) in the nasal cavity (P = .005), and 0.9 mm (0; 1.8) in the maxilla (P = .042) than in HG. Premolar inclination was higher in HG.
Conclusion: Hybrid Hyrax showed more skeletal changes and fewer dental side effects, especially in the first premolar region. The amount of activation influenced the higher nasal skeletal changes in the Hybrid hyrax group.
(© 2022 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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