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  • Apical Extrusion of Root Canal Irrigants When Using Er:YAG and Er,Cr:YSGG Lasers with Optical Fibers: An In Vitro Dye Study

    Author(s)
    George, Roy
    Walsh, Laurence J.
    Griffith University Author(s)
    George, Roy
    Year published
    2008
    Metadata
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    Abstract
    Because of the potential for irritant reactions in the periapical region, irrigant solutions must be constrained within the root canal. We examined fluid extrusion beyond the apical constriction by pressure waves generated by pulsed middle infrared lasers using needles and Max-I-Probes (Dentsply) as controls. Both free-running pulsed Erbium: Yttrium Aluminum Garnet (Er:YAG) and Erbium, Chromium: Yttrium Scandium Gallium Garnet (Er,Cr:YSGG) lasers with bare or conical fiber tips at distances of 5 or 10 mm from the apex displaced fluid past the apex. Larger apical openings showed greater extrusion of fluid. The volume of ...
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    Because of the potential for irritant reactions in the periapical region, irrigant solutions must be constrained within the root canal. We examined fluid extrusion beyond the apical constriction by pressure waves generated by pulsed middle infrared lasers using needles and Max-I-Probes (Dentsply) as controls. Both free-running pulsed Erbium: Yttrium Aluminum Garnet (Er:YAG) and Erbium, Chromium: Yttrium Scandium Gallium Garnet (Er,Cr:YSGG) lasers with bare or conical fiber tips at distances of 5 or 10 mm from the apex displaced fluid past the apex. Larger apical openings showed greater extrusion of fluid. The volume of extruded fluid was similar to conventional 25-G needles, but fluid was distributed further from the apex. Because pulsed lasers create pressure waves in irrigant fluids within the root canal, the potential for extrusion of fluid from the apex should be considered when assessing intracanal laser treatments in endodontics.
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    Journal Title
    Journal of Endodontics
    Volume
    34
    Issue
    6
    DOI
    https://doi.org/10.1016/j.joen.2008.03.003
    Subject
    Dentistry
    Dentistry not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/27333
    Collection
    • Journal articles

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