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Comparison of Bacterial Disinfection Efficacy Using Blue and Red Lights on Dental Implants Contaminated With Aggregatibacter Actinomycetemcomitans Publisher Pubmed



Afrasiabi S1 ; Barikani HR2 ; Chiniforush N1
Authors
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Authors Affiliations
  1. 1. Laser Research Center of Dentistry, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Dental Implant Research Center, Dental Research Institute, Tehran University of Medical Sciences, Tehran, Iran

Source: Photodiagnosis and Photodynamic Therapy Published:2022


Abstract

Objectives: The purpose of this study was to determine the bacterial disinfection efficacy of four photosensitizers (PSs; curcumin, riboflavin, toluidine blue O, and phycocyanin) with blue diode laser (Blue DL) and blue light-emitting diode (Blue LED) or Red DL and Red LED in dental implants contaminated with Aggregatibacter actinomycetemcomitans. Materials and methods: A total of 60 dental implants were contaminated with A. actinomycetemcomitans. All implants were then randomized into ten different disinfection modalities (n = 6 implants per group). The irradiation wavelength in Blue DL and Blue LED or Red DL and Red LED was 450, 430–460, 635, and 630 nm, respectively and its applied energy density was 60 J/cm2 in all groups. Group IX was served as the control group and in group X disinfection was performed with 0.2% chlorhexidine. After the treatments, the colony forming units (CFUs)/ml were calculated to determine antimicrobial effects of each treatment. Results: All disinfection methods significantly reduced bacteria amounts of dental implants inoculated with A. actinomycetemcomitans compared to control group. The CFU/ml in LED group was significantly lower than the DL in all studied groups. Conclusion: aPDT could be an effective supplement in dental implants disinfection. The LED, proved to be better in reducing CFU/ml of A. actinomycetemcomitans on dental implants surface than DL. © 2022 Elsevier B.V.
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