Los datos se analizaron mediante ANOVA bidireccional a un nivel de significación de 0,05. Los residuos extruidos se cuantificaron restando la preinstrumentación del peso postinstrumentación de los tubos Eppendorf. Durante el tratamiento inicial y los procedimientos de retratamiento se utilizaron tubos Eppendorf pesados previamente para recoger los desechos extruidos apicalmente, y el tiempo de operación se registró en segundos. Sesenta raíces mesiales de los primeros molares mandibulares se asignaron aleatoriamente a cuatro grupos (grupos de tratamiento inicial: XPS usado a velocidades de rotación de 1000 o 3000rpm y grupos de retratamiento: XPS usado a velocidades de rotación de 1000 o 3000rpm). Keywords Debris extrusion Endodontic treatment Retreatment XP-endo ShaperĮl objetivo de este estudio fue evaluar el efecto del uso de una mayor velocidad de rotación con XP-endo Shaper (XPS) sobre los desechos extruidos apicalmente y el tiempo de operación durante el tratamiento endodóntico y los procedimientos de retratamiento. In summary, the use of the XPS at high rotation speeds in initial treatment and retreatment procedures did not have a significant effect on the amount of apically extruded debris but significantly decreased the operation time. The use of the XPS at a 3000rpm rotation speed significantly decreased the instrumentation time (p<0.05). In all groups, the use of the XPS at 1000 or 3000rpm rotation speeds had no statistically significant effect on the amount of apically extruded debris (p>0.05). Data were analysed using two-way ANOVA at a significance level of 0.05. The extruded debris was quantified by subtracting the preinstrumentation from the postinstrumentation weight of the Eppendorf tubes. During the initial treatment and retreatment procedures preweighed eppendorf tubes were used to collect apically extruded debris, and the operation time was recorded in seconds. Sixty mesial roots of mandibular first molar teeth were randomly assigned to four groups (Initial treatment groups: XPS used at 1000 or 3000rpm rotation speeds and Retreatment groups: XPS used at 1000 or 3000rpm rotation speeds). The aim of this study was to evaluate the effect of using a higher rotation speed with the XP-endo Shaper (XPS) on apically extruded debris and operation time during endodontic treatment and retreatment procedures.

Shaper speeds chart