Evaluación in vitro de la resistencia friccional entre brackets cerámicos y arcos de acero inoxidable con y sin recubrimiento vítreo aplicado por el método sol-gel

ABSTRACT: 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.

• Autores: Rendón Arias, Luz Adriana; Cano Correa, Gustavo Adolfo; Peláez Vargas, Alejandro; Jaramillo Vallejo, Pedro María; García García, Claudia; Montoya Góez, Yessid
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2008
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/5376
• Acceso en línea: http://hdl.handle.net/10495/5376
• Palabra clave: Fricción; Brackets ortodóncicos; Alambres para ortodoncia; Revestimientos; Friction; Orthodontic brackets; Orthodontic wires; Glass coatings
• Rights: openAccess
• License: Atribución-NoComercial-CompartirIgual 2.5 Colombia (CC BY-NC-SA 2.5 CO)