A new solution for the removal of the smear layer Article
Author(s): Torabinejad M., Khademi A.A., Babagoli J., Cho Y., Johnson W.B., Bozhilov K., Kim J., Shabahang S.
Journal of Endodontics Volume 29, Issue 3, 2003 , Pages 170-175
(IF=2.833 ,Q1,JCR2018) (CiteScore=3.69 ,Q1,Scopus2018)
Various organic acids, ultrasonic instruments, and lasers have been used to remove the smear layer from the surface of instrumented root canals. The purpose of this study was to investigate the effect of a mixture of a tetracycline isomer, an acid, and a detergent (MTAD) as a final rinse on the surface of instrumented root canals. Forty-eight extracted maxillary and mandibular single-rooted human teeth were prepared by using a combination of passive step-back and rotary 0.04 taper nickel-titanium files. Sterile distilled water or 5.25% sodium hypochlorite was used as intracanal irrigant. The canals were then treated with 5 ml of one of the following solutions as a final rinse: sterile distilled water, 5.25% sodium hypochlorite, 17% EDTA, or a new solution, MTAD. The presence or absence of smear layer and the amount of erosion on the surface of the root canal walls at the coronal, middle, and apical portion of each canal were examined under a scanning electron microscope. The results show that MTAD is an effective solution for the removal of the smear layer and does not significantly change the structure of the dentinal tubules when canals are irrigated with sodium hypochlorite and followed with a final rinse of MTAD. Copyright © 2003 by The American Association of Endodontists.
Index Keywords:
biomedical and dental materials chelating agent citric acid dental alloy detergent doxycycline edetic acid hypochlorite sodium nickel polysorbate titanium titanium nickelide water article chemistry clinical trial comparative study controlled clinical trial controlled study dental surgery dentin drug effect endodontics human instrumentation methodology randomized controlled trial scanning electron microscopy statistics tooth pulp ultrastructure Chelating Agents Citric Acid Dental Alloys Dental Pulp Cavity Dentin Detergents Doxycycline Edetic Acid Humans Microscopy, Electron, Scanning Nickel Polysorbates Root Canal Irrigants Root Canal Preparation Smear Layer Sodium Hypochlorite Statistics Titanium Water

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