Assessment of smear layer removal protocols in curved root canals , Abstract This study sought to assess if the final rinse protocol interferes with the smear layer removal in the apical area of curved canals. Sixty-four extracted human mandibular molars with curved mesial roots were instrumented with rotary files and divided into six experimental groups for final rinse: 1EDTA (syringe irrigation with 1mL of 17% ethylenediaminetetraacetic acid (EDTA)), 5EDTA (syringe irrigation with 5mL of 17% EDTA), 1EDTA-P (syringe irrigation with 1mL of 17% EDTA+pumping with gutta-percha point), 5EDTA-P (syringe irrigation with 5mL of 17% EDTA+pumping with gutta-percha point), 1EDTA-EA (syringe irrigation with 1mL of 17% EDTA+EndoActivator) and 5EDTA-EA (syringe irrigation with 5mL of 17% EDTA+EndoActivator). Final rinsing was carried out over 3min. The specimens were split lengthwise and observed under a scanning electron microscope using a score criterion. Comparison among the groups showed statistically significant difference only between the 5EDTA-EA group and the other groups (Kruskal–Wallis and Dunn's post-hoc tests, P\u003C0.05). The combination of 5mL of 17% EDTA and 3mL of 2.5% sodium hypochlorite (NaOCl) with the EndoActivator removed smear layer from the apical area of curved root canals more effectively than the other protocols used. , http://bit.ly/17v62Jw

Assessment of smear layer removal protocols in curved root canals , Abstract This study sought to assess if the final rinse protocol interferes with the smear layer removal in the apical area of curved canals. Sixty-four extracted human mandibular molars with curved mesial roots were instrumented with rotary files and divided into six experimental groups for final rinse: 1EDTA (syringe irrigation with 1mL of 17% ethylenediaminetetraacetic acid (EDTA)), 5EDTA (syringe irrigation with 5mL of 17% EDTA), 1EDTA-P (syringe irrigation with 1mL of 17% EDTA+pumping with gutta-percha point), 5EDTA-P (syringe irrigation with 5mL of 17% EDTA+pumping with gutta-percha point), 1EDTA-EA (syringe irrigation with 1mL of 17% EDTA+EndoActivator) and 5EDTA-EA (syringe irrigation with 5mL of 17% EDTA+EndoActivator). Final rinsing was carried out over 3min. The specimens were split lengthwise and observed under a scanning electron microscope using a score criterion. Comparison among the groups showed statistically significant difference only between the 5EDTA-EA group and the other groups (Kruskal–Wallis and Dunn's post-hoc tests, P\u003C0.05). The combination of 5mL of 17% EDTA and 3mL of 2.5% sodium hypochlorite (NaOCl) with the EndoActivator removed smear layer from the apical area of curved root canals more effectively than the other protocols used. , http://bit.ly/17v62Jw , via Dental Teach " Daily Dental Info " https://www.facebook.com/photo.php?fbid=644218245602728&set=a.597344210290132.1073741862.110664842291407&type=1