Irradiation of infected root canals with a diode laser in vivo: Results of microbiological examinations

Moritz, Andreas; Gutknecht, Norbert; Schoop, U.; Goharkhay, K.; Doertbudak, Orhun; Sperr, Wolfgang R.

doi:10.1002/(sici)1096-9101(1997)21:3<221::aid-lsm1>3.0.co;2-s

Cited by 96 publications

(44 citation statements)

References 14 publications

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“…[41][42][43][44][45] According to the results of the study by Moritz et al on the antibacterial effects of some lasers such as Er:YAG, Nd:YAG and Ho:YAG, it can be concluded that Er:YAG laser is more effective than the others. 21,35 These results are also seen in the study by Schoop et al that show Er:YAG laser in comparison with Nd:YAG, diode and Er:Cr:YSGG in power of 1 W, has been the best at limiting the growth of E. faecalis in permanent teeth. 12 On the contrary, the results of the study by Kuvvetli et al on molar primary teeth show that antibacterial effects of Doide laser have been better than those of Er:YAG laser.…”

Section: Discussionsupporting

confidence: 64%

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The Effect of Er:YAG Laser on Entroccocus faecalis Bacterium in the Pulpectomy of Anterior Primary Teeth

et al. 2017

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Introduction: Successful root canal therapy depends on the complete elimination of microorganisms such as Entroccocus faecalis, which is impossible to achieve with the traditional methods. Lasers are recently introduced as a new method to solve the problem. The present study is planned and performed to examining the antibacterial effect of Er: YAG laser. Methods: Sixty extracted anterior primary teeth were prepared and sterilized. E. faecalis bacterium was cultured in canals. Samples were randomly divided into two groups. The first group was disinfected by NaOCl 5/25% and Er: YAG laser and the second group just by NaOCl 5/25%. Samples of canal contents were cultured and colony counts were calculated. The results were analyzed statistically by SPSS software and Mann Whitney test. Results: There was no significant difference between colony counts in both groups (P = 0.142). But the number of colonies in the first group was lower than in the second group. Conclusion: Although, Er: YAG laser cannot completely eliminate E. faecalis bacterium, its simultaneous use with NaOCl decreases E. faecalis.

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Section: Discussionsupporting

confidence: 64%

“…It is noteworthy that the results of applying diode and Nd:YAG laser were similar to the results of using NaOCl. 21,35 Different studies showed conflicting results when comparing chemical cleaning methods with laser. For instance, the results of the study by Kuştarci showed that NaOCL 5.25% had better effect than KTP laser.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Er:YAG Laser on Entroccocus faecalis Bacterium in the Pulpectomy of Anterior Primary Teeth

et al. 2017

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“…The results showed that this laser was effective for eliminating E. faecalis. 13 The 810 nm diode laser has also been used in another study with a power output of 3 W in continuous mode (CW) for 30 seconds and 74% reduction of E. faecalis was observed for a dentinal thickness of 500 microns.…”

Section: Discussionmentioning

confidence: 99%

Antibacterial Effect of Diode Laser in Pulpectomy of Primary Teeth

2017

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Introduction: Laser irradiation has been suggested as an adjunct to traditional methods of canal preparation but few studies are available on the antibacterial effect of diode laser in pulpectomy of primary teeth. The purpose of the present study is to investigate the antibacterial effect of diode laser in pulpectomy of primary teeth, in addition to define the optimal and harmless diode lasing conditions in the root canal. Methods: A total of 125 single rooted primary teeth were selected. After traditional canal cleaning, they were divided in 2 groups. Sixty-five specimens after culturing of Enterococcus faecalis into the canals, were divided in 3 groups: (1) traditional canal cleaning with 0.5% NaOCl irrigation, (2) method of group 1+ 1.5 W diode laser (980 nm, pulse), (3) without treatment (5 specimens). Then the specimens were cultured and after colony counting under light microscope, were statistically analyzed by Kruskal-Wallis and Mann-Whitney tests. For 60 specimens, temperature rise of apical and cervical parts of the external root surface were measured using 2 thermocouple type K, when radiating a 1.5 W diode laser into the canal. Results: In the first experiment, the diode laser group showed tmost reduction in bacterial count. And in the second experiment, the mean temperature rise of external root surface was less than the threshold of periodontal ligament (PDL) damage. Conclusion: Diode laser with a power output of 1.5 W, is effective in reduction of E. faecalis bacterial count without damaging periodontal structures.

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“…Different laser devices are used currently in root canal treatment [4,22,23]. The high power diode laser, emitting at a wavelength of 980 nm, was first introduced for use in endodontics in 1997 [22].…”

Section: Discussionmentioning

confidence: 99%

Bactericidal Efficacy of Different Diode Laser Operation Modes Against Enterococcus faecalis Compared with Sodium Hypochlorite Irrigation

Grącka-Mańkowska¹,

Zarzycka²,

Pawlicka³

2016

Dent. Med. Probl.

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Microorganisms surviving in the root canal system despite the chemomechnical preparation are the main reason for reinfection and endodontic treatment failure [1]. Among them, Enterococcus faecalis is the most commonly isolated bacterium from teeth with periapical periodontitis with or without periodontal lesions [2][3][4]. Because of its ability to form intra-and extraradicular biofilms, AbstractBackground. Microorganisms surviving in the root canal system despite the chemomechanical preparation are the main reason for reinfection and endodontic treatment failure. The introduction of laser-assisted endodontics resulted in higher success rates and less recurrent infections. Objectives. To compare the antibacterial action of diode laser irradiation (CV -1500 W, IMP -3000 W), photoactivated disinfection (PAD), and 5.25% sodium hypochlorite (NaOCl) on Enterococcus faecalis in an infected tooth model. Material and Methods. Fifty freshly extracted bovine teeth with single canals were prepared to apical size 45° ISO, autoclaved and contaminated with Enterococcus faecalis. After a 48-hour incubation the specimens were randomly divided into four treatment groups and one control group (n = 10): Group 1 was irradiated with 1500 mW (continuous wave diode laser irradiation); Group 2 was irradiated with 3000 mW (impulse diode laser irradiation, 300 ms -pulse, 300 ms -pause); Group 3 was subjected to photo-activated disinfection and Group 4 was irrigated with a 5.25% NaOCl solution for 15 min. Group 5 was rinsed with saline solution (control). After treatment, the dentin samples were collected and the number of surviving bacteria was determined by classical quantitative microbiologic evaluation. Results. The differences in the mean number of the colony forming units (CFU/mg) between all the groups analyzed were statistically significant (p < 0.001). The highest number of microorganisms was observed in the control group (52.7 x 103 CFU/mg). Both diode laser applications resulted in a significant reduction in the number of E. faecalis cells: G1 -1.4 x 103 CFU/mg, G2 -4.2 x 103 CFU/mg, whereas in the group subjected to photo-activated disinfection the extent of reduction was significantly less (G3 -42.8 x 103 CFU/mg). Conclusions. The present study demonstrates that CW and pulse diode laser applications are both suitable for root canal disinfection, but do not eradicate all bacteria (Dent. Med. Probl. 2016, 53, 2, 216-221).

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Irradiation of infected root canals with a diode laser in vivo: Results of microbiological examinations

Cited by 96 publications

References 14 publications

The Effect of Er:YAG Laser on Entroccocus faecalis Bacterium in the Pulpectomy of Anterior Primary Teeth

The Effect of Er:YAG Laser on Entroccocus faecalis Bacterium in the Pulpectomy of Anterior Primary Teeth

Antibacterial Effect of Diode Laser in Pulpectomy of Primary Teeth

Bactericidal Efficacy of Different Diode Laser Operation Modes Against Enterococcus faecalis Compared with Sodium Hypochlorite Irrigation

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