Análisis comparativo de dos selladores radiculares a base de ZOE y resina epóxica
Resumen
El objetivo clínico de un endoposte es ayudar en la retención de la restauración final, generalmente son de fibra de vidrio y permiten que el diente recobre su funcionalidad. Antes de este procedimiento clínico, es necesario realizar un sellado tridimensional de los conductos radiculares, utilizando gutapercha y un sellador radicular. Hay evidencia de que la presencia de eugenol en los selladores afecta la polimerización de cementos de resina lo que disminuye la adhesión del poste, por esta razón el objetivo de este trabajo fue comparar la resistencia adhesiva, la microfiltración y la densidad radiográfica de dos selladores radiculares en raíces de dientes bovinos. Dos selladores endodónticos disponibles comercialmente fueron utilizados: VIARDEN® (sellador a base de óxido de zinc y eugenol) y ADSEALTM (sellador a base de resina epóxica). Todos los datos fueron analizados utilizando un nivel de significancia de α = 0.05. La prueba de resistencia adhesiva al desalojo demostró que el grupo obturado con el sellador ADSEAL™ obtuvo los valores más elevados; los resultados de microfiltración mostraron que el sellador a base de ZOE tuvo los mayores valores (p<0.05) y la densidad radiográfica observada fue estadísticamente similar (p>0.05). Del análisis efectuado, se concluye que la composición química del material utilizado como sellador endodóntico tiene una influencia significativa en la microfiltración apical y en la resistencia adhesiva. Por otro lado, el sellador a base de resina epóxica parece tener el mejor desempeño por lo que puede considerarse como ideal para los procedimientos endodónticos.
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