Antimicrobial effect of ER:YAG laser irradiation in infected root canals: an in vitro study

Marcelo Sampaio Moura; Fatima A. A. Zanin D.D.S.; Aldo Brugnera Jr.; Cyntia Rodrigues de Araujo Estrela; Carlos Estrela; Jesus Djalma Pecora D.D.S.

doi:10.1117/12.476535

3 July 2003 Antimicrobial effect of Er:YAG laser irradiation in infected root canals: an in vitro study

Marcelo Sampaio Moura, Fatima A. A. Zanin D.D.S., Aldo Brugnera Jr., Cyntia Rodrigues de Araujo Estrela, Carlos Estrela, Jesus Djalma Pecora D.D.S.

Author Affiliations +

Proceedings Volume 4950, Lasers in Dentistry IX; (2003) https://doi.org/10.1117/12.476535
Event: Biomedical Optics, 2003, San Jose, CA, United States

Abstract

This study evaluated in vitro the antimicrobial action of Er:YAG laser in infected root canals. A total of 36 human anterior teeth were prepared, sterilized and inoculated with suspensions of S. aureus, E. faecalis, P aeruginosa, B. subtilis and C. albicans. After the contamination period (28 days), the teeth were irrigated with sterile distilled water or 1% sodium hypochlorite and, then, irradiated with an Er:YAG laser (wavelength 2094 nm) with two different evaluation parameters: 52 mJ and 110 mJ laser output at the fiber tip. After the irradiation, the teeth were irrigated with sterile distilled water and the solutions were collected with sterile paper points and incubated in Letheen Broth for 48 hours. After this period 0,1 ml of this solution was transferred to 10 ml of Brain Heart Infusion and incubated for 48 hours. After 72 hours a new collect ion was done and incubated again. Based on the data, it was concluded that the distilled water or 1% sodium hypochlorite irradiated or not with an Er:YAG laser with two different parameters: 10 Hz, 110 mJ input and 52 mJ output, and 10 Hz, 250 mJ input and 110 mJ output had no antimicrobial activity in the root canals contaminated with the following microorganisms: Enterococcus faecalis, Staphylococcus aureus, Pseudomonas aeruginosa, Bacillus subtilis and Candida albicans.

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Marcelo Sampaio Moura, Fatima A. A. Zanin D.D.S., Aldo Brugnera Jr., Cyntia Rodrigues de Araujo Estrela, Carlos Estrela, and Jesus Djalma Pecora D.D.S. "Antimicrobial effect of Er:YAG laser irradiation in infected root canals: an in vitro study", Proc. SPIE 4950, Lasers in Dentistry IX, (3 July 2003); https://doi.org/10.1117/12.476535

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KEYWORDS

Microorganisms

Er:YAG lasers

Sodium

Teeth

In vitro testing

Laser dentistry

Brain

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