Journal of Korean Academy of Pediatric Dentistry 2018;45(1):82-89

doi:10.5933/JKAPD.2018.45.1.82

Antimicrobial Effect on Streptococcus mutans in Photodynamic Therapy using Different Light Source

Jaeyong KIM 1 ; Howon PARK ; Juhyun LEE ; Hyunwoo SEO ; Siyoung LEE

Affiliations

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Keywords

Photodynamic therapy; Erythrosine; Streptococcus mutans; Biofilm; Light source; Energy; Halogen; Light-Emitting Diode; Plasma arc

Country

Republic of Korea

Language

Korean

Abstract

In a photodynamic therapy, the difference of antibacterial capacity was compared according to the type of source of light when the same quantity of energy is irradiated.After S. mutans is formed in planktonic state and biofilm state, erythrosine diluted to 40 µM was treated for 3 minutes, and as the type of light source, Halogen, LED, and Plasma arc were used, which were irradiated for 30 seconds, 15 seconds and 9.5 seconds, respectively.After the completion of the experiment, CFU of each experiment arm was measured to compare the photodynamic therapeutic effects according to each condition.The CFU of each experiment arm had no statistically significant difference.Under the same quantity of energy, the photodynamic therapeutic effect can be said to be the same regardless of types of light source, which is a useful result in the clinical field with various light irradiators.