Efectividad de métodos de remoción de barrillo dentinario, mediante microscopio electrónico de barrido.

Abstract

INTRODUCTION: The importance of irrigation should be considered due to the impossibility of completely reaching the different parts of the root canal with instrumentation. OBJECTIVE: To analyze the effectiveness of activation methods for smear removal by scanning electron microscopy. MATERIALS AND METHODS: A sample of 45 uniradicular premolars were divided into 4 experimental groups and 1 control group. The teeth were instrumented with Wave One Gold Primary machined files. The same irrigation protocol was used for the 4 experimental groups: Group A: Sonic activation with EDDY tips, Group B: Sonic activation with Dentsply Sirona EndoActivator, Group C: Ultrasonic activation with IRRI K VDW, Group D: Ultrasonic activation with Ultra-X EndoActivator Eighteeth. In all experimental groups, 5.25% NaClO, 2.5 ml saline and 17% EDTA were used. The control group was only irrigated with saline solution without activation and observed by scanning electron microscopy. RESULTS: Groups A and D obtained the highest score, but without significant differences between them, indicating similar cleanliness. EndoActivator Dentsply Sirona is recommended as the first option, since it achieved the lowest score, standing out among the methods evaluated. CONCLUSION: This study used a scanning electron microscopy to evaluate the effectiveness of different activation methods in removing smear layer. The results highlighted the superiority of the EndoActivator Dentsply Sirona, which removed smear in 60% of the samples, although no method achieved complete removal.