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Comparison of Anti-Microbial Effects of Low-Level Laser Irradiation and Microwave Diathermy on Gram-Positive and Gram-Negative Bacteria in an In Vitro Model

1
Department of Medical Rehabilitation Sciences, College of Applied Medical Sciences, King Khalid University, Abha 62529, Saudi Arabia
2
Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha 62529, Saudi Arabia
3
Department of Basic Medical Sciences, College of Applied Medical Sciences, King Khalid University, Abha 62529, Saudi Arabia
*
Author to whom correspondence should be addressed.
Medicina 2019, 55(7), 330; https://doi.org/10.3390/medicina55070330
Received: 27 February 2019 / Revised: 5 May 2019 / Accepted: 5 May 2019 / Published: 2 July 2019
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Abstract

Background and Objectives: The aim of this study was to compare the effects of low-level laser therapy and continuous microwave diathermy on the growth of Gram-negative and Gram-positive bacteria and to establish their efficacy as an alternative therapeutic modality. Materials and methods: Laser fluence of 13 Joules (J)/cm2, 18 J/cm2 and 30 J/cm2 were used against several bacterial strains. Microwave dosages of 25, 50 and 100 watts (W) were used, respectively. Results: A significant difference between the three groups was observed using repeated analysis of variance (RANOVA) (F value: 0.74, and p value: 0.001). The Greenhouse–Geisser correction (GG) revealed significant results for laser irradiation alone. However, effect size calculation showed effects with microwave diathermy as well as laser fluence. Conclusions: Low-level laser therapy appears to be an effective modality of treatment when compared with continuous microwave diathermy on the Gram-negative and the Gram-positive bacterial strains tested. Microwave diathermy revealed large and medium effects on the bacterial cell counts with dominant effects on Gram-negative strains. View Full-Text
Keywords: bacterial culture; low-level laser therapy; gram stain; microwave diathermy; electrotherapy bacterial culture; low-level laser therapy; gram stain; microwave diathermy; electrotherapy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Dixit, S.; Ahmad, I.; Hakami, A.; Gular, K.; Tedla, J.S.; Abohashrh, M. Comparison of Anti-Microbial Effects of Low-Level Laser Irradiation and Microwave Diathermy on Gram-Positive and Gram-Negative Bacteria in an In Vitro Model. Medicina 2019, 55, 330.

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