In Vitro Effect of Er:YAG Laser on Different Single and Mixed Microorganisms Being Associated with Endodontic Infections.

Henninger, Eva; Aranha Berto, Luciana; Eick, Sigrun; Lussi, Adrian; Neuhaus, Klaus W. (2019). In Vitro Effect of Er:YAG Laser on Different Single and Mixed Microorganisms Being Associated with Endodontic Infections. Photobiomodulation, photomedicine, and laser surgery, 37(6), pp. 369-375. Mary Ann Liebert 10.1089/photob.2018.4557

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Objective: The purpose of this in vitro study was to evaluate the antimicrobial effect of activated irrigation with different modes of erbium-doped yttrium aluminum garnet (Er:YAG) laser application on microorganisms related to secondary endodontic infection. Background: Er:YAG laser has been recommended as an adjuvant tool for root canal disinfection during endodontic treatment. Materials and methods: Laser-activated irrigation (LAI) with 300 or 600 μm tips were tested with or without intermittent irrigation with 0.9% sodium chloride (NaCl) solution against different microorganisms (five single strains and dual species (Streptococcus gordonii combined with Actinomyces oris or Fusobacterium nucleatum) in root canals after 3 days of incubation. In a 21-day infection model, LAI was used together with intermittent rinsing with sodium hypochlorite (NaOCl) against the dual-species mixtures; here the incidence of microbial regrowth after up to 7 days was monitored. Results: In the 3-day root infection model, LAI protocols did not show any significant reduction of the microbial load when compared with manual irrigation with saline solution. In the 21-day infection, S. gordonii combined with A. oris were not detectable anymore after applying the LAI protocol with a 600 μm tip (30 mJ/10 pps) up to 7 days after treatment. Conclusions: Application of LAI with a 600 μm tip by using an Er:YAG laser might be advantageous in treatment of endodontic infections.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Preventive, Restorative and Pediatric Dentistry
04 Faculty of Medicine > School of Dental Medicine > School of Dental Medicine, Periodontics Research

UniBE Contributor:

Aranha Berto, Luciana; Eick, Sigrun; Lussi, Adrian and Neuhaus, Klaus

Subjects:

600 Technology > 610 Medicine & health

ISSN:

2578-5478

Publisher:

Mary Ann Liebert

Language:

English

Submitter:

Daniela Zesiger

Date Deposited:

03 Dec 2019 13:06

Last Modified:

03 Dec 2019 13:06

Publisher DOI:

10.1089/photob.2018.4557

PubMed ID:

31074693

Uncontrolled Keywords:

cavitation disinfection endodontics irrigation

BORIS DOI:

10.7892/boris.135541

URI:

https://boris.unibe.ch/id/eprint/135541

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