Effects of 980 nm diode laser application protocols on the reduction
of Enterococcus faecalis intracanal biofilm: An in vitro study

Prażmo, Ewa Joanna; Godlewska, Renata; Sałkiewicz, Monika; Mielczarek, Agnieszka

doi:10.17219/dmp/77898

Cited by 4 publications

(5 citation statements)

References 23 publications

(26 reference statements)

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“…Among various lasers available, diode laser is probably one of the most effective lasers for the disinfection of S. mutans (Moritz et al 1999;Lee 2006). In study by Prażmo et al 2017), a reduction of bacteria colonies was found when diode laser was used alone, which is in disagreement with the present study; the individual effects of diode laser irradiation were observed, but combination of laser with nanoparticles was evaluated with significantly better results obtained. It attributed to the deep penetration effects of laser followed by antimicrobial effects of nanoparticles.…”

Section: Discussioncontrasting

confidence: 97%

Antibacterial effect of metallic nanoparticles on Streptococcus mutans bacterial strain with or without diode laser (970 nm)

Sadony

Abozaid

2019

Bull Natl Res Cent

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Background: The main etiological agent for dental caries is Streptococcus mutans bacterial strain. Recently, metallic nanoparticles and diode laser have been introduced as a new method in bacterial decontamination. Nanoparticles have very small particles size that has greater surface area and exert their antimicrobial effect by interacting with the negatively charged bacterial cell wall, while lasers have become increasingly popular in dentistry due to their multiple uses, and one such important application is tooth disinfection. Objective: Present study was conducted to evaluate antimicrobial efficacy of silver (AgNPs) and gold nanoparticles (AuNPs) with and without diode laser (970 nm, 15 Hz, 100 mJ, 2 W, each cycle was 10 s and repeated 6 times with intervals of 5 s for each sample) irradiation against experimentally inoculated S. mutans bacteria in the samples. Material and methods: Thirty freshly a traumatically extracted premolars human tooth were collected, and cylindrical cavity in crowns with 4 mm diameter and 5 mm depth was prepared and inoculated with S. mutans for 24 h. The tooth were randomlly divided into equal expermintal groups (6 each): group 1, positive control group by S. mutans bacterial strain; group 2, irrigation with silver nanoparticles (AgNPs) for 3 min; group 3, irrigation with gold nanoparticles (AuNPs) for 3 min; group 4, 3 ml AgNPs + irradiation with diode laser for 60 s; and group 5, 3 ml AuNPs + irradiation with diode for 60 s. The specimens were collected from the teeth sample, and colony-forming units (CFU's) were observed by counting the bacteria colony on plates. Results: A significant difference was found among all the groups in comparison to the control group (p < 0.05). The greatest reduction in CFU's was observed in combination of AgNPs with diode laser group. Conclusions: The NPs in combination with diode laser irradiation has the potential to be used as dentine disinfectant.

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Section: Discussioncontrasting

confidence: 97%

Antibacterial effect of metallic nanoparticles on Streptococcus mutans bacterial strain with or without diode laser (970 nm)

Sadony

Abozaid

2019

Bull Natl Res Cent

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“…Ewa Joana Prazma et al [15] studied the effects of a 380 W-980 nm diode laser on the reduction in the intracanal biofilm of Enterococcus faecalis and concluded that the diode laser had a significant antibacterial effect and approximately showed a decrease in 87.6% in the double radiation group and 52.5% in the single radiation group. eir results are in line with the results of our study, showing that the use of the diode laser can reduce the number of bacteria.…”

Section: Discussionmentioning

confidence: 99%

“…Diode lasers have little interference with water and hydroxyapatite due to their flexible fibers, which can easily penetrate into curved canals [14]. Examining the effects of a 980 nm diode laser on reducing the biofilm of Enterococcus faecalis bacteria in a canal, Prazmo et al [15] reported that the number of bacteria significantly decreased in this way. Kerstin Bitter in 2017 also compared the antibacterial effects of ozone gas and a 980 nm diode laser with the antibacterial effects of a canal coated with calcium hydroxide and chlorhexidine gel for one week.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Effects of the Novel Blue Laser and Erbium Chromium Laser on Enterococcus Faecalis in Root Canal Dentin with Different Thicknesses

Hendi

Ahmadyani

Alikhani

et al. 2022

International Journal of Dentistry

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The aim of this study was to investigate the antibacterial effects of 445 nm blue diode lasers and erbium chromium lasers on the biofilm of Enterococcus faecalis in root canal dentin with different thicknesses. Dentin slices with thicknesses of 300, 500, and 1,000 microns were prepared; and after the biofilm formation, they were randomly divided into four groups: group A : Er, Cr:YSGG laser radiation; group B: 445 nm diode laser radiation; group C : laser radiation in three cycles; and control group D: 5 samples of each thickness were selected as a positive control group. Er, Cr:YSGG and diode lasers alone did not significantly reduce the number of bacteria in any of the thicknesses. Only in 1 mm thick sections, the group exposed with the both Er, Cr:YSGG laser and 445 nm diode laser (66%) significantly reduced the number of bacteria. There was a significant difference in a thickness of 0.3 mm compared to a thickness of 1 mm, indicating that these lasers had a better effect at a thickness of 0.3 mm than at 1 mm parts (P-value < 0.008). It seems that these lasers can be used as an adjunct to conventional chemical methods in cleaning infected canals.

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“…Excellent long-term decannulation rates together with no significant deterioration in voice quality was achieved. Prażmo et al [ 32 ] confirmed a positive effect of the repeated 980 nm laser pulsed irradiation (100 Hz) on intracanal Enterococcus faecalis biofilm elimination.…”

Section: Introductionmentioning

confidence: 99%

Medical Applications of Diode Lasers: Pulsed versus Continuous Wave (cw) Regime

Michalik¹,

Szymańczyk

Stajnke

et al. 2021

Micromachines

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The paper deals with the medical application of diode-lasers. A short review of medical therapies is presented, taking into account the wavelength applied, continuous wave (cw) or pulsed regimes, and their therapeutic effects. Special attention was paid to the laryngological application of a pulsed diode laser with wavelength 810 nm, and dermatologic applications of a 975 nm laser working at cw and pulsed mode. The efficacy of the laser procedures and a comparison of the pulsed and cw regimes is presented and discussed.

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Effects of 980 nm diode laser application protocols on the reduction of Enterococcus faecalis intracanal biofilm: An in vitro study

Abstract: Background. Enterococcus faecalis is associated with a great number of refractory endodontic infections. There is a need to investigate antibacterial properties of laser radiation and create a new alternative technique for root canal disinfection.

Cited by 4 publications

References 23 publications

Antibacterial effect of metallic nanoparticles on Streptococcus mutans bacterial strain with or without diode laser (970 nm)

Antibacterial effect of metallic nanoparticles on Streptococcus mutans bacterial strain with or without diode laser (970 nm)

Antibacterial Effects of the Novel Blue Laser and Erbium Chromium Laser on Enterococcus Faecalis in Root Canal Dentin with Different Thicknesses

Medical Applications of Diode Lasers: Pulsed versus Continuous Wave (cw) Regime

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