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2019-11

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cc-by (c) Betancourt, Pablo et al., 2019
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/158944

Er,Cr:YSGG Laser-Activation Enhances Antimicrobial and Antibiofilm Action of Low Concentrations of Sodium Hypochlorite in Root Canals

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https://doi.org/10.3390/antibiotics8040232

Abstract

Abstract: The onset and persistence of endodontic infections due to residual biofilm after chemical disinfection promotes secondary bacterial infection. Alternative methods to disinfect operated root canals are a matter of great interest. The aim was to evaluate the antibacterial effectiveness of sodium hypochlorite (NaOCl) at low concentrations activated by the Er,Cr:YSGG laser-activated irrigation (LAI) against 10-day-old intracanal Enterococcus faecalis biofilm. Biofilms were formed inside the root canals and divided into 7 groups (n13): 0.5% NaOCl + Er,Cr:YSGG; Saline + Er,Cr:YSGG; 0.5% NaOCl + syringe irrigation(SI); 2.5% NaOCl + SI; 5% NaOCl + SI; positive and negative controls. Bacterial survivors were counted and specimens visualized under scanning electron and confocal laser scanning microscopy. Treatments with 0.5% NaOCl + Er,Cr:YSGG and 2.5% NaOCl + SI gave a significant reduction in the number of CFU/mm2. Moreover, scanning electron microscopy and confocal laser scanning microscopy imaging confirmed and reinforced bacteriological data. Thus, Er,Cr:YSGG LAI proved to be able to improve the intracanal distribution of 0.5% NaOCl after 60 s of activation, reaching the same level of effectiveness than 2.5% NaOCl. This is regarded as of clinical interest, since working with lower concentrations may contribute to reduce undesired effects.

Subject

Malalties infeccioses, Endodòncia, Biofilms

Subject (English)

Communicable diseases, Endodontics, Biofilms

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Articles publicats en revistes (Odontoestomatologia)
Articles publicats en revistes (Patologia i Terapèutica Experimental)

Citation

BETANCOURT HENRÍQUEZ, Pablo Andrés, et al. Er,Cr:YSGG Laser-Activation Enhances Antimicrobial and Antibiofilm Action of Low Concentrations of Sodium Hypochlorite in Root Canals. Antibiotics. 2019. Vol. 8, num. 4, pags. 232. ISSN 2079-6382. [consulted: 10 of June of 2026]. Available at: https://hdl.handle.net/2445/158944

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