Estudio comparativo de la conformación obtenida con TruNatomy, WaveOne Gold y ProTaper Gold en conductos curvos simulados / Comparative study of the shaping ability obtained with TruNatomy, Wave One Gold and ProTaper Gold systems in simulated curved canals

RESUMEN

OBJETIVO: El objetivo del presente estudio fue evaluar la conformación obtenida por los sistemas TruNatomy, WaveOne Gold y ProTaper Gold en conductos curvos simulados de Endo Training Blocks. MATERIALES Y MÉTODOS: Se utilizaron 30 Endo Training Blocks con conductos curvos simulados divididos en 3 grupos de 10 muestras cada uno, instrumentados con TruNatomy, WaveOne Gold y ProTaper Gold respectivamente. Todos los sistemas se emplearon siguiendo el protocolo sugerido por el fabricante. Los conductos simulados se irrigaron con 3 ml de agua destilada a cada cambio de instrumento y al finalizar la preparación. Se utilizó para este procedimiento la aguja plástica del sistema TruNatomy. Las muestras fueron teñidas con tinta china a fin de poder visualizar correctamente el espacio conformado. A continuación, se realiza-ron mediciones del ancho de los conductos curvos simulados a 7 mm, 11 mm y 14 mm del acceso coronal con un software de imágenes. Para la evaluación estadística se llevó a cabo el análisis de variancia de medidas repetidas y la prueba de Tukey. RESULTADOS: Se observaron diferencias estadísticamente significativas entre el grupo de TruNatomy y los otro dos. Las diferencias fueron significativas entre los tercios de cada grupo (P < 0.05). CONCLUSIÓN: El uso del sistema TruNatomy genera una conformación más conservadora que el WaveOne Gold y Protaper Gold en los tres tercios del conducto simulado

ABSTRACT

OBJECTIVE: The aim of this study was to evaluate the shaping ability performed by TruNatomy, WaveOne Gold and ProTaper Gold systems in simulated curved canals of Endo Training Blocks. MATERIALS AND METHODS: Thirty Endo Training Blocks with simulated curved canals were used. After dividing into 3 groups of 10 samples each, blocks were instrumented with TruNatomy, WaveOne Gold and ProTaper Gold respectively. All systems were used following the protocol suggested by the manufacturer. The canals were irrigated with 3 ml of distilled water between each instrument and as a final rinse. The TruNatomy plastic needle was used for this procedure. The samples were dyed with Chinese ink in order to visualize the final shape. The wide measurements of the simulated curved canals were carried out at 7 mm, 11 mm and 14 mm of the coronal access using image software. For the statistical evaluation the analysis of variance of repeated measures and the Tukey test were done. RESULTS: Statistically significant differences were observed be-tween the TruNatomy group and the other two. The differences were significant between thirds of each group (P < 0.05). CONCLUSIONS: The use of the TruNatomy system generates a more conservative shape than the WaveOne Gold and ProTaper Gold in the three thirds of the simulated canals