Serviços Personalizados
Journal
Artigo
Indicadores
Citado por SciELO
Acessos
Links relacionados
Citado por Google
Similares em SciELO
Similares em Google
Compartilhar
Revista Facultad de Odontología Universidad de Antioquia
versão impressa ISSN 0121-246X
Resumo
RENDON ARIAS, Luz Adriana et al. In vitro evaluation of frictional resistance between ceramic brackets and orthodontic steel wires with and without glass coatings applied by Sol-Gel method. Rev Fac Odontol Univ Antioq [online]. 2008, vol.20, n.1, pp.58-71. ISSN 0121-246X.
INTRODUCTION: to compare the in vitro static and dynamic frictional resistance between ceramic brackets and stainless steel wires with and without glass coatings applied by sol-gel method. METHODS: 58 commercial stainless steel orthodontic wires AISI 304 (0.016 x 0.016 inch) were prepared with and without vitreous coating applied by Sol- Gel method. The in vitro static and dynamic frictional resistance of the wires on the mono-crystalline ceramic brackets were evaluated; also, the wire surfaces were characterized by means of Optical Microscopy and scanning electronic microscopy (SEM). RESULTS: statistically significant differences were found between both groups under static (p = 0.000) as well as dynamic (p = 0.001) friction test. The friction values found in the coated group were higher (Static friction: 1.78 ± 0.44 N, Dynamic friction: 1.75 ± 0.49 N) than the group with no coating (Static friction: 1.37 ± 0.31 N, Dynamic friction: 1.41 ± 0.27 N). Characterization by SEM showed surface defects in both groups after the friction tests. CONCLUSION: the evaluated coatings did not perform better in terms of frictional behavior on sapphire mono-crystalline ceramic brackets when compared with the control group.
Palavras-chave : friction; orthodontic brackets; orthodontic wires; glass coatings.