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Effect of manual dynamic activation on smear layer removal efficacy of ethylenediaminetetraacetic acid and SmearClear: An in vitro scanning electron microscopic study
Author(s) -
Andrabi Syed MukhtarUnNisar,
Kumar Ashok,
Mishra Surrendra Kumar,
Tewari Rajendra Kumar,
Alam Sharique,
Siddiqui Shiraz
Publication year - 2013
Publication title -
australian endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.703
H-Index - 34
eISSN - 1747-4477
pISSN - 1329-1947
DOI - 10.1111/j.1747-4477.2012.00350.x
Subject(s) - smear layer , ethylenediaminetetraacetic acid , scanning electron microscope , root canal , dentistry , nuclear chemistry , chemistry , negative control , materials science , chelation , medicine , traditional medicine , composite material , organic chemistry
The purpose of the present study was to evaluate the effect of manual dynamic activation (MDA) with a master gutta‐percha point on the smear layer removal efficacy of 17% ethylenediaminetetraacetic acid (EDTA) and SmearClear. Fifty freshly extracted human single‐rooted teeth were prepared using ProTaper rotary system up to F3 size. The prepared teeth were divided into five groups on the basis of final irrigation received. Group A: 3% NaOCl solution (negative control group). Group B: 5 mL of 17% EDTA. Group C: 1 mL of 17% EDTA + MDA for 2 min + 4 mL of 17% EDTA rinse. Group D: 5 mL of SmearClear. Group E: 1 mL of SmearClear + MDA for 2 min + 4 mL of SmearClear rinse. Prepared samples were decoronated and then longitudinally split into two halves and evaluated under scanning electron microscope. Representative images at coronal, middle and apical third level were taken and scored for the amount of smear layer present, using a three‐score system. The data were analysed through Kruskal–Wallis and Mann–Whitney U ‐test. The root canal surfaces of samples of group C and group E (where MDA was done) were significantly cleaner in apical third regions than those of group B and group D ( P < 0.05).