Stability of class II correction with the Austro Repositioner associated with multi‑brackets fixed appliances in dolichofacial patients
Metadatos
Mostrar el registro completo del ítemAutor
Austro Martínez, María Dolores; Nicolás Silvente, Ana I.; Requena, Mª Angeles; Carazo Austro, Marta; Alarcón Pérez, José AntonioEditorial
BioMed Central
Materia
Class II Mandibular retrognathism Dolichofacial pattern
Fecha
2024-01-08Referencia bibliográfica
Austro-Martinez, M.D., Nicolás-Silvente, A.I., Requena, M.A. et al. Stability of class II correction with the Austro Repositioner associated with multi-brackets fixed appliances in dolichofacial patients. BMC Oral Health 24, 44 (2024). https://doi.org/10.1186/s12903-023-03692-7
Resumen
Background The purposes of the present study were to evaluate the changes produced by the Austro Repositioner,
and to assess the stability of Class II malocclusion treatment with the Austro Repositioner associated with fixed appliances
and its capacity to control the vertical dimension in dolichofacial patients.
Methods A group of patients with Class II malocclusion due to mandibular retrognathism and a dolichofacial growth
pattern treated with the Austro Repositioner combined with fixed appliances were compared to a matched untreated
control group of subjects with Class II malocclusion. Evaluations were made on the basis of lateral cephalograms
taken at T1 (initial records), T2 (end of treatment), and T3 (1 year after treatment). Statistical comparisons were performed
with paired- and two-sample t tests.
Results The experimental (treated) group comprised 30 patients, 14 boys and 16 girls, and the control group comprised
30 subjects (15 boys and 15 girls) with similar ages at T1, T2 and T3.
In the treated group, a significant decrease in the ANB angle was found (− 3.79 ± 1.46; p < 0.001). No significant differences
were found in the maxillary skeletal measurements. In contrast, the SNB angle showed a significant increase
of 3.77 ± 1.49 in the treated group compared with a nonsignificant increase of 0.77 ± 1.55 in the control group
(p = 0.002). Vertical changes showed a significant decrease in the FMA angle (− 3.36 ± 1.62), while the lower anterior
facial height distance and the overbite increased significantly in the treated group, reflecting a change in vertical
dimensions after treatment. No significant changes were observed in either the treated or control group during
the one-year posttreatment period; thus, the treatment results remained stable.
Conclusions The Austro Repositioner combined with fixed appliances could be considered an optimal treatment
modality in Class II dolichofacial patients.