Premium
Effect of 17% EDTA and MTAD on intracanal smear layer removal: A scanning electron microscopic study
Author(s) -
Ali Mozayeni Mohammad,
Hossein Javaheri Ghasem,
Poorroosta Pardis,
Asna Ashari Mohammad,
Hossein Javaheri Homan
Publication year - 2009
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.1747-4477.2007.00111.x
Subject(s) - smear layer , sodium hypochlorite , dentistry , root canal , scanning electron microscope , materials science , crown (dentistry) , coronal plane , layer (electronics) , medicine , chemistry , composite material , anatomy , organic chemistry
The purpose of this study was to determine the effectiveness of MTAD as the final irrigant to remove the smear layer, compared with that of 17% EDTA, both following root canal irrigation with 5.25% sodium hypochlorite (NaOCl). Fifty‐five extracted maxillary and mandibular single‐rooted human teeth were prepared by a crown‐down technique using rotary 0.04 and 0.06 taper nickel‐titanium files. 5.25% sodium hypochlorite was used as the intracanal irrigant. The canals were then treated with 5 mL of one of the following solutions as final rinse: 5.25% sodium hypochlorite, 17% EDTA or MTAD. The presence or absence of smear layer in the coronal, middle and apical portion of each canal was examined with a scanning electron microscope. The results showed that MTAD is an effective final rinse solution for removing the smear layer in canals irrigated with sodium hypochlorite. When 17% EDTA was used as a final rinse, the smear layer was removed from the middle and coronal thirds of canal preparations, but it was less effective in the apical third of the canals.