Mahsa Alavi Namvar1, Mohammad Vahedi2, Hamid-Reza Abdolsamadi3, Alireza Mirzaei4, Younes Mohammadi5, Farid Azizi Jalilian6. 1. Postgraduate Student, Department of Oral and maxillofacial Medicine, Faculty of Dentistry, Hamedan University of Medical Sciences, Hamedan, Iran. Electronic address: Mahsa.alavinamvar@gmail.com. 2. Associate Professor, Dental research center, Department of Oral and maxillofacial Medicine, Faculty of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran. Electronic address: vahedi_md@yahoo.com. 3. Professor, Dental research center, Department of Oral and maxillofacial Medicine, Faculty of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran. Electronic address: abdolsamadi@umsha.ac.ir. 4. DDS, MS, DMD, member of dental laser research of Hamadan university of medical science, Hamadan, Iran. Electronic address: drphdbonn@gmail.com. 5. Ph.D. in Epidemiology, Modeling of Noncommunicable Diseases Research Center, Department of Epidemiology, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran. Electronic address: younesmohamadi@gmail.com. 6. Associate Professor of Medical Virology, Department of Medical Microbiology, Hamadan University of Medical Sciences, Hamadan, Iran. Electronic address: azizijalilian@yahoo.com.
Abstract
INTRODUCTION: Herpes simplex virus (HSV) is among the most common viruses in humans. HSV1 is often responsible for oral and perioral herpetic lesions. Photodynamic therapy (PDT) is a novel antimicrobial modality that involves the use of laser and a photosensitizer with a specific wavelength. This study aimed to assess and compare the effect of PDT with 810 and 940 nm diode laser and indocyanine green (ICG) photosensitizer on HSV1. METHODS: In this in vitro study, HSV1 isolated from herpes labialis and there were 6 experimental groups.The irradiation parameters were the same for all groups. Number of remaining viruses per milliliter in each group was determined using real-time polymerase chain reaction (PCR) and statistically analyzed by ANOVA. RESULTS: The virus count in all groups significantly decreased compared to the control group (P < 0.05) except in group ICG- without irradiation (P > 0.05). Comparison of groups 810- and 940- (use of each laser alone) with groups 810+ and 940+ (use of each laser plus ICG) revealed that reduction in virus count in groups 810+ and 940+ was significantly greater than that in groups 810- and 940-. CONCLUSION: 810 nm diode laser irradiation and ICG causes the greatest reduction in number of HSV1 compared to all the other groups. ICG without laser irradiation has not significant efficacy on reduction of virus count.
INTRODUCTION: Herpes simplex virus (HSV) is among the most common viruses in humans. HSV1 is often responsible for oral and perioral herpetic lesions. Photodynamic therapy (PDT) is a novel antimicrobial modality that involves the use of laser and a photosensitizer with a specific wavelength. This study aimed to assess and compare the effect of PDT with 810 and 940 nm diode laser and indocyanine green (ICG) photosensitizer on HSV1. METHODS: In this in vitro study, HSV1 isolated from herpes labialis and there were 6 experimental groups.The irradiation parameters were the same for all groups. Number of remaining viruses per milliliter in each group was determined using real-time polymerase chain reaction (PCR) and statistically analyzed by ANOVA. RESULTS: The virus count in all groups significantly decreased compared to the control group (P < 0.05) except in group ICG- without irradiation (P > 0.05). Comparison of groups 810- and 940- (use of each laser alone) with groups 810+ and 940+ (use of each laser plus ICG) revealed that reduction in virus count in groups 810+ and 940+ was significantly greater than that in groups 810- and 940-. CONCLUSION: 810 nm diode laser irradiation and ICG causes the greatest reduction in number of HSV1 compared to all the other groups. ICG without laser irradiation has not significant efficacy on reduction of virus count.
Authors: Jace A Willis; Vsevolod Cheburkanov; Giulia Kassab; Jennifer M Soares; Kate C Blanco; Vanderlei S Bagnato; Vladislav V Yakovlev Journal: Appl Phys Rev Date: 2021-06 Impact factor: 19.162