Cavitational effects in aqueous endodontic irrigants generated by near-infrared lasers

Journal of Endodontics
Raghad HmudLaurence J Walsh

Abstract

Laser-generated pressure waves may have application for removing debris and smear layers from root canals. Past work has employed middle infrared erbium lasers. The present study examined whether near infrared 940 and 980 nm diode lasers (Biolase Ezlase and Sirona Sirolaser, respectively) could induce cavitations in aqueous media. Laser energy was delivered into a capillary tube using a 200 microm fiber, and the formation of cavitations observed with a microscope. In the first part of the study, a range of laser parameters were trialled to establish conditions which form cavitations within 5 seconds of the commencement of laser irradiation. The second part of the study compared cavitation in distilled water, aerated tap water, degassed distilled water, ozonated water, 3 and 6% hydrogen peroxide using panel setting of 2.5 W/25 Hz for the Sirolaser, and 4 W/10 Hz for the Ezlase. Both diode laser systems could induce cavitation in water-base media by the formation and implosion of water vapour. Laser power played a more important role than pulse frequency or pulse interval. Optimal laser-initiated cavitation occurred when weak (3%) peroxide solutions were used as the target irrigant, rather than water. This phenomenon has potentia...Continue Reading

Citations

Jun 25, 2013·Lasers in Medical Science·Hakan ArslanDamla Ozsu
Dec 14, 2011·Photomedicine and Laser Surgery·Raqueli ViapianaYara Teresinha Correa Silva-Sousa
Dec 23, 2011·International Journal of Dentistry·Sushma Jaju, Prashant P Jaju
Feb 16, 2016·Laser Therapy·Omid Heidar MuhammadEtienne Medioni
Apr 27, 2010·Journal of Endodontics·Raghad HmudLaurence J Walsh
Sep 22, 2015·Photomedicine and Laser Surgery·Sibel KoçakSevinç Aktemur Türker
Jun 6, 2013·Lasers in Surgery and Medicine·Katharina KuhnRaimund Hibst
Sep 23, 2014·Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc·Manfred LagemannLaurence J Walsh
Sep 23, 2014·Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc·Harry Huiz Peeters, Norbert Gutknecht
Jul 15, 2015·Photomedicine and Laser Surgery·Helena Suleiman de MacedoWalter Raucci-Neto
Jul 15, 2015·Photomedicine and Laser Surgery·Alper Kuştarcı, Kürşat Er
Mar 22, 2014·Lasers in Medical Science·Roy GeorgeLaurence James Walsh
Nov 3, 2016·The Journal of Clinical Pediatric Dentistry·Ozge Erken Gungor, Alper Kustarci
Mar 28, 2013·Lasers in Medical Science·Maarten A MeireRoeland J De Moor
Jan 29, 2020·Acta Odontologica Scandinavica·Ezgi Doğanay YıldızMehmet Eren Fidan
Oct 27, 2017·Materials·Laurence J Walsh, Roy George
Jan 14, 2014··Rudolf M. VerdaasdonkRoeland J. G. De Moor

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