Chlorophyll mediated photodynamic inactivation of blue laser on Streptococcus mutans

Photodynamic inactivation is an inactivation method in microbial pathogens that utilize light and photosensitizer. This study was conducted to investigate photodynamic inactivation effects of low intensity laser exposure with various dose energy on Streptococcus mutans bacteria. The photodynamic ina...

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Bibliographic Details
Main Authors: Astuti, Suryani Dyah, Zaidan, A., Setiawati, Ernie Maduratna, Suhariningsih
Format: Conference Proceeding
Language:English
Subjects:
Bacteria
Chlorophyll
Deactivation
Exposure
Lasers
Microorganisms
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Summary:Photodynamic inactivation is an inactivation method in microbial pathogens that utilize light and photosensitizer. This study was conducted to investigate photodynamic inactivation effects of low intensity laser exposure with various dose energy on Streptococcus mutans bacteria. The photodynamic inactivation was achieved with the addition of chlorophyll as photosensitizers. To determine the survival percentage of Streptococcus mutans bacteria after laser exposure, the total plate count method was used. For this study, the wavelength of the laser is 405 nm and variables of energy doses are 1.44, 2.87, 4.31, 5.74, 7.18, and 8.61 in J/cm2. The results show that exposure to laser with energy dose of 7.18 J/cm2 has the best photodynamic inactivation with a decrease of 78% in Streptococcus
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4943353