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Materials 2017, 10(10), 1214; doi:10.3390/ma10101214

Activation of Alkaline Irrigation Fluids in Endodontics

1
The University of Queensland School of Dentistry, Herston, Brisbane QLD 4006, Australia
2
Griffith University School of Dentistry and Oral Health, Southport QLD 4215, Australia
*
Author to whom correspondence should be addressed.
Received: 12 September 2017 / Revised: 4 October 2017 / Accepted: 20 October 2017 / Published: 23 October 2017
(This article belongs to the Special Issue Dental Biomaterials 2017)
View Full-Text   |   Download PDF [241 KB, uploaded 23 October 2017]   |  

Abstract

In conventional endodontic treatment, alkaline solutions of sodium hypochlorite (NaOCl) and ethylenediaminetetraacetic acid (EDTA) are used in combination to disinfect the root canal system and to eliminate debris and smear layers. An important concept that has emerged over recent years is the use of active physical methods for agitating these fluids to improve their penetration within areas that are not reached by endodontic instruments and to accelerate the chemical actions of these alkaline fluids against planktonic microorganisms, biofilms, soft tissue remnants and smear layers. Ultrasonic agitation and more recently pulsed lasers have emerged as two promising methods for activating endodontic irrigation fluids. Ultrasonic agitation with piezoelectric devices employs a moving tip, while laser agitation uses a stationary tip. Both methods cause cavitation, followed by implosions and shear forces which assist with debridement. Fluid streaming further enhances the activity of the fluids. While agitation enhances performance of irrigants, extrusion of fluids from the root canal during activation is a hazard that must be controlled. View Full-Text
Keywords: endodontics; irrigation; EDTA; sodium hypochlorite; ultrasonics; laser activation; fluid extrusion; smear layer endodontics; irrigation; EDTA; sodium hypochlorite; ultrasonics; laser activation; fluid extrusion; smear layer
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Walsh, L.J.; George, R. Activation of Alkaline Irrigation Fluids in Endodontics. Materials 2017, 10, 1214.

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