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Antimicrobial Effect of Photodynamic Therapy Using Plaque Disclosing Agent

치면착색제를 이용한 광역동 치료의 항균 효과

  • Kho, Junhee (Department of Pediatric Dentistry, Oral Science Research Center, College of Dentistry, Gangneung-Wonju National University) ;
  • Park, Howon (Department of Pediatric Dentistry, Oral Science Research Center, College of Dentistry, Gangneung-Wonju National University) ;
  • Lee, Juhyun (Department of Pediatric Dentistry, Oral Science Research Center, College of Dentistry, Gangneung-Wonju National University) ;
  • Seo, Hyunwoo (Department of Pediatric Dentistry, Oral Science Research Center, College of Dentistry, Gangneung-Wonju National University) ;
  • Lee, Siyoung (Department of Microbiology and Immunology, College of Dentistry, Gangneung-Wonju National University)
  • 고준희 (강릉원주대학교 치과대학 소아.청소년치과학교실 및 구강과학연구소) ;
  • 박호원 (강릉원주대학교 치과대학 소아.청소년치과학교실 및 구강과학연구소) ;
  • 이주현 (강릉원주대학교 치과대학 소아.청소년치과학교실 및 구강과학연구소) ;
  • 서현우 (강릉원주대학교 치과대학 소아.청소년치과학교실 및 구강과학연구소) ;
  • 이시영 (강릉원주대학교 치과대학 미생물학 및 면역학교실)
  • Received : 2019.10.02
  • Accepted : 2019.11.18
  • Published : 2020.05.31

Abstract

The aim of this study was to evaluate the antimicrobial effect of photodynamic therapy (PDT) using plaque disclosing agent, 10 - 20 mM erythrosine, as a photosensitizer. Multispecies cariogenic biofilms containing Streptococcus mutans, Lactobacillus casei and Candida albicans were formed on hydroxyapatite disc. 20 μM, 10 mM and 20 mM erythrosine were applied as a photosensitizer for 3 minutes, and then light-emitting diode (LED) irradiated for 24 seconds. Colony-forming unit (CFU) were measured and biofilms were observed using confocal laser scanning microscopy (CLSM). CFU were significantly decreased in the PDT groups using 10 - 20 mM erythrosine (10 mM, 20mM) and the results were also confirmed by CLSM. This study confirms the high antimicrobial effect of photodynamic therapy using plaque disclosing agent as a photosensitizer.

이 연구의 목적은 치면착색제인 10 - 20 mM erythrosine을 광감각제로 사용한 광역동 치료의 항균 효과를 평가하는 것이다. Streptococcus mutans, Lactobacillus casei, Candida albicans를 포함하는 다종 우식원성 세균막을 hydroxyapatite disc에 형성하였다. 광감각제로 20 μM, 10 mM, 20 mM erythrosine을 3분간 적용 후 24초 동안 광조사를 시행하였다. 각 실험군의 Colony-forming unit (CFU)을 측정하고 세균막을 Confocal laser scanning microscopy (CLSM)을 이용하여 관찰하였다. 10 - 20 mM erythrosine을 광감각제로 사용한 광역동 치료 실험군에서 CFU의 현저한 감소가 관찰되었고, 그 결과는 CLSM 관찰에서도 확인되었다. 이번 연구를 통해 치과 임상에서 사용되는 치면착색제를 광감각제로 이용한 광역동 치료의 높은 항균효과를 확인할 수 있었다.

Keywords

References

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