Análisis Químico, Morfológico y de Adherencia Bacteriana de Alambres de Ortodoncia Compuestos por Diferentes Aleaciones Metálicas
DOI:
https://doi.org/10.21270/archi.v12i9.6256Palabras clave:
Aleaciones, Ortodoncia, Streptococcus mutans, AlambreResumen
El propósito de este estudio fue evaluar las características químicas, morfológicas y de adhesión bacteriana de los arcos ortodónticos compuestos por diferentes aleaciones metálicas.: Los segmentos de alambre (n=10) se asignaron a los siguientes grupos: G1) Tru-Chrome- Rock Mountain Steel Wire (Colordo-EE. UU.); G2) NiTi- Rock Mountain Wire (Colorado-EE. UU.); G3) TiMb Rock Mountain Wire (Colorado-EE. UU.); G4) NbTi Gummetal- Rock Mountain Wire (Colorado-EE. UU.). Los arcos ortodónticos se segmentaron (20 mm) y se esterilizaron mediante luz ultravioleta. Utilizando la Microscopía Confocal de Láser (CLM), se investigó la rugosidad de los arcos. La composición de las aleaciones metálicas se analizó mediante Microscopía Electrónica de Barrido/Espectroscopía de Dispersión de Energía (SEM/EDS). Se realizó el crecimiento del biofilm de S. mutans en los arcos y se analizó mediante SEM y espectrofotometría. Los datos de rugosidad superficial y espectrofotometría se sometieron a un ANOVA de una vía, seguido por la prueba de Tukey (α=0.05) y los datos de SEM/EDS se obtuvieron mediante análisis exploratorio. Los arcos NbTi mostraron una mayor rugosidad superficial en comparación con los otros grupos, seguidos por los arcos NiTi y TiMb y el grupo de arcos de acero (p<0.05). Se observó una menor adherencia del biofilm de S. mutans en los arcos de acero en comparación con los otros grupos. Los resultados de absorbancia mostraron una mayor formación de biofilm para el grupo NbTi, seguido por Acero, NiTi y TiMb (p<0.05). Los resultados de EDS confirman las composiciones propuestas por el fabricante. Se concluyó que el tipo de aleación en los arcos ortodónticos tiene un efecto en la rugosidad superficial. Las características químicas y morfológicas de los arcos están relacionadas con la adhesión del biofilm de S. mutans.
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