Eficacia de diferentes quelantes para la remoción del barrillo dentinario
Fecha
2020-10
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Universidad de Guayaquil. Facultad Piloto de Odontología
Resumen
El barrillo dentinario es producido durante la instrumentación mecánica del canal radicular, su
presencia impide la desinfección del sistema de conductos, manteniendo las bacterias alojadas
en los túbulos dentinarios, dificultando el ingreso de las sustancias irrigadoras y selladores
endodónticos, lo cual podría repercutir en una reinfección del sistema de canales
comprometiendo con el éxito en el tratamiento. Este estudio in vitro tuvo como objetivo
principal determinar la eficacia del EDTA al 17%, EDTA al 18% y del ácido cítrico al 20% en
la eliminación del barrillo dentinario, comparando la técnica de activación manual con el uso
de la lima XP-endo Finisher en la terapia endodóntica. Se recolectaron 40 raíces palatinas de
primeros molares superiores, los cuales fueron instrumentados con ProTaper Next e irrigados
con hipoclorito de sodio al 2.5%, luego se dividieron en tres grupos experimentales y un grupo
control de 10 piezas cada grupo, donde se aplicó protocolos de irrigación final con las
sustancias quelantes antes mencionadas, utilizando dos técnicas para la activación final del
irrigante. Las muestras fueron observadas a través de un Microscopio electrónico de barrido,
donde los datos obtenidos fueron analizados estadísticamente de acuerdo con la prueba
ANOVA. Los resultados demostraron que el EDTA al 17% fue ligeramente superior al EDTA
18%. Sin embargo, el irrigante que eliminó mayor cantidad de barrillo dentinario siendo mejor
en el tercio apical fue el ácido cítrico. La activación del quelante con XP-endo Finisher dio
resultados superiores en comparación con la técnica de activación manual al remover barrillo
dentinario en el tercio apical.
The smear layer is produced during the mechanical instrumentation of the root canal, its presence prevents the disinfection of the canal system, keeping away bacteria’s in the dentinal tubules, making it difficult to get in, irrigating the substances in endodontic sealants, which could have an impact on a reinfection of the canal system compromising with the success in the treatment. The objective of this research is to study the in vitro, it was to determine the effectiveness of 17% EDTA, 18% EDTA and 20% citric acid in the removal dentin, comparing to the hand operated technique with the use of the XP-Endo finisher lime in endodontic therapy whom were collected 40 palatal roots in the upper first molars, which were instrumented with ProTaper Next and irrigated with 2.5% hypochlorite sodium then they divided into three experimental groups, one control group of 10 pieces each group also irrigation protocols were applied finally mentioned above. The chelating substances trigger using two techniques for the final activation of the irrigation. The samples were observed through a scanning electron microscope, the data obtained were statistically analyzed according to the ANOVA test. The results showed 17% EDTA was slightly higher than 18% EDTA. However, the irrigation that removed the largest amount of smear layer being better in the apical third was citric acid. The chelator activation with XP-Endo finisher gave better results compared to the hand operated technique when removing dentinal slit in the apical third.
The smear layer is produced during the mechanical instrumentation of the root canal, its presence prevents the disinfection of the canal system, keeping away bacteria’s in the dentinal tubules, making it difficult to get in, irrigating the substances in endodontic sealants, which could have an impact on a reinfection of the canal system compromising with the success in the treatment. The objective of this research is to study the in vitro, it was to determine the effectiveness of 17% EDTA, 18% EDTA and 20% citric acid in the removal dentin, comparing to the hand operated technique with the use of the XP-Endo finisher lime in endodontic therapy whom were collected 40 palatal roots in the upper first molars, which were instrumented with ProTaper Next and irrigated with 2.5% hypochlorite sodium then they divided into three experimental groups, one control group of 10 pieces each group also irrigation protocols were applied finally mentioned above. The chelating substances trigger using two techniques for the final activation of the irrigation. The samples were observed through a scanning electron microscope, the data obtained were statistically analyzed according to the ANOVA test. The results showed 17% EDTA was slightly higher than 18% EDTA. However, the irrigation that removed the largest amount of smear layer being better in the apical third was citric acid. The chelator activation with XP-Endo finisher gave better results compared to the hand operated technique when removing dentinal slit in the apical third.
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Palabras clave
BARRILLO DENTINARIO, ACIDO CITRICO, ACIDO EDETICO