Evaluation of the force generated by gradual deflection of orthodontic wires in conventional metallic, esthetic, and self-ligating brackets
AUTOR(ES)
Francisconi, Manoela Fávaro, Janson, Guilherme, Henriques, José Fernando Castanha, Freitas, Karina Maria Salvatore de
FONTE
J. Appl. Oral Sci.
DATA DE PUBLICAÇÃO
2016-10
RESUMO
ABSTRACT Objective: The purpose of this study was to evaluate the deflection forces of Nitinol orthodontic wires placed in different types of brackets: metallic, reinforced polycarbonate with metallic slots, sapphire, passive and active self-ligating, by assessing strength values variation according to gradual increase in wire diameter and deflection and comparing different combinations in the different deflections. Material and Methods: Specimens were set in a clinical simulation model and evaluated in a Universal Testing Machine (INSTRON 3342), using the ISO 15841 protocol. Data were subjected to One-way ANOVA, followed by Tukey tests (p<0.05). Results: Self-ligating brackets presented the most similar behavior to each other. For conventional brackets there was no consistent behavior for any of the deflections studied. Conclusions: Self-ligating brackets presented the most consistent and predictable results while conventional brackets, as esthetic brackets, showed very different patterns of forces. Self-ligating brackets showed higher strength in all deflections when compared with the others, in 0.020-inch wires.
Documentos Relacionados
- Evaluation of force released by deflection of orthodontic wires in conventional and self-ligating brackets
- Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot study
- Corrosion behavior of self-ligating and conventional metal brackets
- Alterations in plaque accumulation and gingival inflammation promoted by treatment with self-ligating and conventional orthodontic brackets
- Comparative study of friction between metallic and conventional interactive self-ligating brackets in different alignment conditions