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Diagnosis of Early Dental Caries with Dye-Enhancing Quantitative Light-Induced Fluorescence (QLF)

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±è¹ÌÈñ:Kim Mi-Hee ÀÌ»óÈ£:Lee Sang-Ho/À̳­¿µ:Lee Nan-Young

Abstract

º» ¿¬±¸ÀÇ ¸ñÀûÀº °ÇÀü ¹ý¶ûÁú°ú ¿ì½Ä º´¼ÒÀÇ Çü±¤ Â÷À̸¦ ÁõÁø½ÃÄÑ QLFÀÇ ¿µ»óÇÐÀûÀÎ Áø´Ü°­µµ¸¦ ³ôÀÌ°í, QLF·Î ÃÔ¿µÇÑ À̹ÌÁö »ó¿¡¼­ Âø»ö°ú ¿ì½Äº´¼Ò¸¦ °¨º°Çϱâ À§ÇØ Çü±¤ ¿°»öÁ¦ÀÎ Ç÷ç¿À·¹¼¼ÀγªÆ®·ýÀ» Á¢¸ñÇÏ¿© »ç¶÷ Ä¡¾ÆÀÇ ¹ý¶ûÁú Ç¥¸é¿¡ À¯¹ßµÈ Ãʱ⠿ì½Äº´¼Ò¸¦ Æò°¡Çϴµ¥ ÀÖ´Ù.
Ä¡¾Æ¿ì½ÄÁõÀ̳ª ±Õ¿­ÀÌ ¾ø´Â ÃÖ±Ù ¹ß°ÅµÈ ¼Ò±¸Ä¡ ¹× Á¦3´ë±¸Ä¡¸¦ ´ë»óÀ¸·Î ÇÏ¿© Ä¡¾ÆÀÇ ÆòÈ°¸éÀ» 6 mm ¡¿ 3 mm ¡¿ 3 mm Å©±â·Î Àý´ÜÇÑ ÈÄ ¾ÆÅ©¸± ÁÖÇü¿¡ ¸Å¸ôÇÏ¿´°í, ½ÃÆí Ç¥¸éÀûÀÇ 1/2¿¡ nail varnish¸¦ µµÆ÷ÇÏ¿© ´ëÁ¶±ºÀ¸·Î ¼³Á¤ÇÏ¿´´Ù. ½ÃÆíÀº ¹«ÀÛÀ§·Î 15°³¾¿ ÃÑ 6°³ Żȸ±×·ì(6, 12, 24, 48, 72, 96½Ã°£)À¸·Î ³ª´©¾ú´Ù. ½ÃÆíÀ» °¢ ½Ã°£¿¡ ¸Â°Ô Żȸ½ÃÅ°°í »ý¸® ½Ä¿°¼ö·Î ¼¼Ã´ÇÑ ÈÄ QLF-D¸¦ ÀÌ¿ëÇÏ¿© Żȸ Á¤µµ(¥ÄF)¸¦ ÃøÁ¤ÇÏ°í 0.075% Ç÷ç¿À·¹¼¼ÀγªÆ®·ýÀ» Àû¿ëÇÑ ÈÄ ¼¼Ã´ÇÏ°í ¥ÄF °ªÀ» ÃøÁ¤ÇÏ¿© ±× °ªÀ» ºñ±³ÇÏ¿´´Ù. ½ÃÆíÀÇ Áß¾Ó ºÎÀ§¸¦ »èÁ¦ÇÏ°í ¿¬¸¶ÇÏ¿© ÁÖ»çÀüÀÚÇö¹Ì°æ »óÀ¸·Î ¿µ»óÀ» ÀúÀåÇÑ ÈÄ º´¼Ò ±íÀ̸¦ ÃøÁ¤ÇÏ¿´´Ù.
QLF¸¦ ÀÌ¿ëÇÏ¿© °üÂûÇÑ ¿ì½Äº´¼Ò´Â °ÇÀü ¹ý¶ûÁúº¸´Ù ¾îµÓ°Ô, Ç÷ç¿À·¹¼¼ÀγªÆ®·ýÀ» µµÆ÷ÇÑ ÈÄ QLF·Î °üÂûÇÑ ¿ì½Äº´¼Ò´Â °ÇÀü ¹ý¶ûÁúº¸´Ù ¹à°Ô °üÂûµÇ¾úÀ¸¸ç Żȸ½Ã°£ÀÌ Áõ°¡ÇÔ¿¡ µû¶ó Çü±¤¿°·á´Â ´õ ¸¹ÀÌ Ä§ÅõÇÏ¿´´Ù. Ç÷ç¿À·¹¼¼ÀγªÆ®·ýÀ» Àû¿ëÇÑ ÈÄ ÃøÁ¤ÇÑ ¥ÄF °ªÀº ¿°»ö Àü°ú ºñ±³ÇÏ¿© ¸ðµÎ Áõ°¡ÇÏ¿´´Ù(p < 0.05). QLF ¼öÄ¡¿Í º´¼Ò ±íÀÌ´Â ³ôÀº »ó°ü°ü°è¸¦ º¸¿´°í ȸ±ÍºÐ¼®À» ÅëÇØ ¼±Çü ¹æÁ¤½ÄÀ» ÃßÃâÇÏ¿´´Ù.
µû¶ó¼­ Ç÷ç¿À·¹¼¼ÀγªÆ®·ýÀ» Á¢¸ñ½ÃŲ QLF ÃøÁ¤Àº ÀÓ»óÀûÀ¸·Î Ãʱâ¿ì½ÄÀ» °¨ÁöÇÏ°í ºÐ·ùÇϴµ¥ ±â¿©ÇÒ ¼ö ÀÖÀ»°ÍÀ̸ç, QLF·Î ÃÔ¿µÇÑ À̹ÌÁö¿¡¼­ ¿ì½Äº´¼Ò¿Í Âø»öÀ» °¨º°Çϴµ¥ µµ¿òÀ» ÁÙ °ÍÀÌ´Ù.

This study used sodium fluorescein to improve imaging diagnostic ability by increasing the fluorescence difference between sound enamel and caries lesions. It also made it easier to discriminate between stain and caries lesions using quantitative light-induced fluorescence (QLF).
Half of the specimen surface was covered with nail varnish as a control. Specimens were divided randomly in six decalcification groups and decalcified for different lengths of time. Then, ¥ÄF was measured using QLF-D. After applying 0.075% sodium fluorescein, we measured ¥ÄF again and compared it with the initial value. After cutting the central portion of the specimen, we measured the lesion depth using scanning electron microscopy.
The lesion surfaces observed with QLF were darker than normal enamel, whereas they were lighter than normal enamel after applying fluorescein. Longer decalcification time was associated with greater fluorescent dye penetration. The ¥ÄF measured after applying fluorescein was higher than the initial value (p < 0.05).
Due to QLF measurement using fluorescein being more sensitive for diagnosing early decalcification, this approach will enable early diagnosis of dental caries before the cavity formation stage, allowing the treatment of early caries lesions. With QLF and sodium fluorescein, we can easily discriminate between stain and caries lesions.

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Ä¡¾Æ¿ì½ÄÁõ; Á¤·® ±¤ Çü±¤±â; Ç÷ç¿À·¹¼¼ÀγªÆ®·ý
Dental caries; Quantitative light-induced fluorescence; Sodium fluorescein

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