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Antimicrobial Effect of Photodynamic Therapy Using Plaque Disclosing Agent

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°íÁØÈñ ( Kho Jun-Hee ) - Gangneung-Wonju National University College of Dentistry Department of Pediatric Dentistry
¹ÚÈ£¿ø ( Park Ho-Won ) - Gangneung-Wonju National University College of Dentistry Department of Pediatric Dentistry
ÀÌÁÖÇö ( Lee Ju-Hyun ) - Gangneung-Wonju National University College of Dentistry Department of Pediatric Dentistry
¼­Çö¿ì ( Seo Hyun-Woo ) - Gangneung-Wonju National University College of Dentistry Department of Pediatric Dentistry
À̽ÿµ ( Lee Si-Young ) - Gangneung-Wonju National University College of Dentistry Department of Microbiology and Immunology

Abstract

ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº Ä¡¸éÂø»öÁ¦ÀÎ 10 - 20 mM erythrosineÀ» ±¤°¨°¢Á¦·Î »ç¿ëÇÑ ±¤¿ªµ¿ Ä¡·áÀÇ Ç×±Õ È¿°ú¸¦ Æò°¡ÇÏ´Â °ÍÀÌ´Ù. Streptococcus mutans, Lactobacillus casei, Candida albicans ¸¦ Æ÷ÇÔÇÏ´Â ´ÙÁ¾ ¿ì½Ä¿ø¼º ¼¼±Õ¸·À» hydroxyapatite disc¿¡ Çü¼ºÇÏ¿´´Ù. ±¤°¨°¢Á¦·Î 20 ¥ìM, 10 mM, 20 mM erythrosineÀ» 3ºÐ°£ Àû¿ë ÈÄ 24ÃÊ µ¿¾È ±¤Á¶»ç¸¦ ½ÃÇàÇÏ¿´´Ù. °¢ ½ÇÇ豺ÀÇ Colony-forming unit (CFU)À» ÃøÁ¤ÇÏ°í ¼¼±Õ¸·À» Confocal laser scanning microscopy (CLSM)À» ÀÌ¿ëÇÏ¿© °üÂûÇÏ¿´´Ù. 10 - 20 mM erythrosineÀ» ±¤°¨°¢Á¦·Î »ç¿ëÇÑ ±¤¿ªµ¿ Ä¡·á ½ÇÇ豺¿¡¼­ CFUÀÇ ÇöÀúÇÑ °¨¼Ò°¡ °üÂûµÇ¾ú°í, ±× °á°ú´Â CLSM °üÂû¿¡¼­µµ È®ÀεǾú´Ù. À̹ø ¿¬±¸¸¦ ÅëÇØ Ä¡°ú ÀÓ»ó¿¡¼­ »ç¿ëµÇ´Â Ä¡¸éÂø»öÁ¦¸¦ ±¤°¨°¢Á¦·Î ÀÌ¿ëÇÑ ±¤¿ªµ¿ Ä¡·áÀÇ ³ôÀº Ç×±ÕÈ¿°ú¸¦ È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù.

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 ¥ìM, 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.

Å°¿öµå

Photodynamic therapy; Erythrosine; Plaque disclosing agent; Multispecies biofilm

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