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Erythrosine°ú LED¸¦ ÀÌ¿ëÇÑ ±¤¿ªµ¿ Ä¡·á ÈÄ Streptococcus mutans ¹ÙÀÌ¿ÀÇʸ§ÀÇ È¸º¹

Recovery of Streptococcus Mutans Biofilm after Photodynamic Therapy with Erythrosine and LED Light Source

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½Å¿ë¿í, ¹ÚÈ£¿ø, ÀÌÁÖÇö, À̽ÿµ,
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½Å¿ë¿í ( Shin Yong-Wook ) - 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
À̽ÿµ ( Lee Si-Young ) - Gangneung-Wonju National University College of Dentistry Department of Microbiology and Immunology

Abstract

ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº erythrosine ¸Å°³ ±¤¿ªµ¿ Ä¡·á (Photodynamic therapy, PDT)°¡ Streptococcus mutans ¹ÙÀÌ¿ÀÇʸ§ ȸº¹¿¡ ¹ÌÄ¡´Â¿µÇâÀ» Colony Forming Unit (CFU) ÃøÁ¤°ú °øÃÊÁ¡ ·¹ÀÌÀú ÁÖ»ç Çö¹Ì°æÀÇ °üÂûÀ» ÅëÇØ Æò°¡ÇÏ´Â °ÍÀ̾ú´Ù.
PDT¿¡¼­ ±¤°¨°¢Á¦·Î erythrosineÀ» »ç¿ëÇÏ¿´´Ù. S. mutans ATCC 25175 ¹ÙÀÌ¿ÀÇʸ§¿¡ LED ±¤¿øÀ» ÅëÇØ ±¤¿ªµ¿ Ä¡·á¸¦ ½ÃÇàÇÏ¿´´Ù.
Ŭ·Î¸£Çí½Ãµò (Chlorhexidine, CHX) ó¸®ÇÑ ±ºÀ» ¾ç¼º´ëÁ¶±ºÀ¸·Î ¼³Á¤ÇÏ¿´´Ù. °¢ ±º¿¡ µû¸¥ ó¸® ÈÄ ¹ÙÀÌ¿ÀÇʸ§ÀÇ È¸º¹À» À§ÇØ ¹è¾çÇÏ¿´´Ù. ¼¼±Õ »ýÁ¸À²À» ó¸® Á÷ÈÄ, Àç¹è¾ç ÈÄ 3½Ã°£ °£°ÝÀ¸·Î 24½Ã°£±îÁö CFU °è¼ö¸¦ ÅëÇØ ÃøÁ¤ÇÏ¿´´Ù.
Ç×±Õ Ã³¸® Á÷ÈÄ PDT, CHX¿¡¼­ ¸ðµÎ À½¼º´ëÁ¶±º°ú ºñ±³ ½Ã S. mutans CFU ¼ö°¡ À¯ÀÇÇÏ°Ô °¨¼ÒÇÏ¿´´Ù. Àç¹è¾ç 12½Ã°£ ÈÄ PDT´Â À½¼º´ëÁ¶±º°ú ºñ±³ ½Ã CFU ¼ö °¨¼Ò¿¡ °üÇÏ¿© Åë°èÀûÀÎ À¯ÀǼºÀ» ¶çÁö ¾Ê¾ÒÁö¸¸ CHX´Â 24½Ã°£ µ¿¾È Åë°èÀûÀ¸·Î ³·Àº CFU ¼ö¸¦ º¸¿´´Ù.
ErythrosineÀ» ÀÌ¿ëÇÑ ±¤¿ªµ¿ Ä¡·á´Â S. mutans ¹ÙÀÌ¿ÀÇʸ§ Çü¼ºÀ» È¿°úÀûÀ¸·Î ¾ïÁ¦ÇÏÁö¸¸ Ŭ·Î¸£Çí½Ãµòº¸´Ù ¹ÙÀÌ¿ÀÇʸ§ÀÇ È¸º¹À̺ü¸£°Ô ³ªÅ¸³µ´Ù. ÀÌ ¿¬±¸´Â Ä¡¾Æ ¿ì½Ä ¿¹¹æÀ» À§ÇÑ ±¤¿ªµ¿ Ä¡·áÀÇ ÀÓ»óÀû È¿°ú¿¡ °üÇÑ ÅëÂû·ÂÀ» Á¦°øÇÑ´Ù.

The aim of this study was to evaluate the effects of erythrosine-mediated photodynamic therapy (PDT) on Streptococcus mutans biofilm recovery by counting its colony-forming units (CFUs) and via confocal laser scanning microscopy analysis at different time points following PDT.
In PDT, photosensitizer was an erythrosine. S. mutans ATCC25175 biofilms were irradiated using an LED curing light.
Chlorhexidine (CHX) was used as positive control. After each antimicrobial treatment, samples were cultured to allow biofilm recovery. Viability was measured by calculating the CFU counts after treatment and after every 3 hours for up to 24 hours.
Immediately after treatment, the PDT and CHX groups showed equally significant decreases in S. mutans CFU counts compared to the negative control. After 12 hours of reculture, the PDT group showed no significant difference in the decrease in CFU count compared to the negative control, whereas the CHX group showed significantly lower CFU counts throughout the 24-hour period.
Erythrosine-mediated PDT can effectively inhibit S. mutans biofilm formation. However, biofilm recovery occurred earlier in the CHX group after PDT. This study provides insights into the clinical effectiveness of PDT in preventing dental caries.

Å°¿öµå

Photodynamic therapy; Streptococcus mutans; Biofilm recovery; Erythrosine

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