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The Antibacterial Effect of Nd:YAG Laser Treatment of Teeth with Apical Periodontitis: A Randomized Controlled Trial
Department of Endodontics, Specialist Clinic Kaniken, Public Dental Health Service, Uppsala, Sweden.
Malmö högskola, Faculty of Odontology (OD).ORCID iD: 0000-0001-7425-1038
Malmö högskola, Faculty of Odontology (OD).ORCID iD: 0000-0003-4290-2283
2017 (English)In: Journal of Endodontics, ISSN 0099-2399, E-ISSN 1878-3554, Vol. 43, no 6, p. 857-863Article in journal (Refereed)
Abstract [en]

INTRODUCTION: The aim of this blind, in vivo, randomized controlled trial was to evaluate the antibacterial effect of Nd:YAG laser irradiation in endodontic treatment of single-rooted teeth with apical periodontitis. The hypothesis was that mechanical enlargement of the root canal and Nd:YAG laser irradiation would yield more negative bacterial samples than conventional treatment. METHODS: Forty-one patients (45 teeth) were allocated to the laser (n = 22) or control (n = 23) group. The teeth in the laser group were instrumented, irrigated with saline, and irradiated with Nd:YAG laser according to a standard protocol. The teeth in the control group were similarly instrumented but irrigated with 1% unbuffered sodium hypochlorite and 15% EDTA solution. Bacterial samples were taken before and after treatment, blinded, and immediately sent for culturing and analysis. RESULTS: The initial bacterial samples were positive in 20 of 22 teeth in the laser group and 18 of 23 (P = .414) in the control group. After the initial treatment, negative bacterial samples were found in 11 teeth in the laser group and 13 (P = .768) in the control group. After 2 to 4 days with no antibacterial dressing in the root canals, 5 teeth in the laser group and 9 (P = .337) in the control group yielded negative bacterial samples. CONCLUSIONS: After intervention, neither the test group nor the control group yielded predictable negative bacterial samples. Thus, the results failed to verify the hypothesis that Nd:YAG laser irradiation would yield significantly more negative bacterial samples than conventional irrigation with 1% unbuffered sodium hypochlorite solution.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 43, no 6, p. 857-863
Keywords [en]
Endodontics, root canal therapy, sodium hypochlorite, solid-state lasers, treatment outcome
National Category
Dentistry
Identifiers
URN: urn:nbn:se:mau:diva-15897DOI: 10.1016/j.joen.2017.01.013ISI: 000403193300001PubMedID: 28389075Scopus ID: 2-s2.0-85017337083Local ID: 22671OAI: oai:DiVA.org:mau-15897DiVA, id: diva2:1419419
Available from: 2020-03-30 Created: 2020-03-30 Last updated: 2024-06-17Bibliographically approved

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Wolf, EvaFransson, Helena

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