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COMPARATIVE STUDY ON THE EARLY DETECTION OF ENAMEL LESIONS USING DIFITI AND LASER FLUORESCENCE

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¸Í¸íÈ£ ( Maeng Myoung-Ho ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÁ¾¼ö ( Kim Jong-Soo ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±è¼º¿À ( Kim Seung-Oh ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

»õ·Î °³¹ßµÈ Á¶±â Áø´Ü Àåºñµé·Î´Â laser fluorescence device(LFD), ÃÊÀ½ÆÄ Áø´Ü ½Ã½ºÅÛ, confocal laser scanning microscopy(CLSM), quantitative light-induced fluorescence(QLF) ½Ã½ºÅÛ ±×¸®°í digital imaging fiber-optic trans-illumination (DIFOTI) ½Ã½ºÅÛ µîÀÌ ÀÖ´Ù.

º» ¿¬±¸´Â ÀÓ»ó¿¡¼­ »ç¿ëµÇ°í ÀÖ´Â DIFOTI ½Ã½ºÅÛ°ú LFD¸¦ ÀÌ¿ëÇÏ¿© À¯Ä¡ ±³È¯ ½Ã±â¿¡ Àִ ȯ¾Æ 21¸í, 25°³ÀÇ À¯Ä¡¸¦ ´ë»óÀ¸·Î °¢ Ä¡¾Æ´ç 1~3Á¡À» ¼±Á¤ÇÏ¿© ±¸°­³»¿¡¼­ Ãʱ⠿ì½Ä¹ý¶ûÁú¿¡ ´ëÇÑ DIFOTI À̹ÌÁö ÃÔ¿µ °á°ú¿Í LFD °èÃø°ªÀ» 3ȸ ÃøÁ¤ÇÏ°í ±× Æò±ÕÀ» ´ëÇ¥°ªÀ¸·Î ÇÑ °á°ú¸¦ CLSM°ú ºñ±³ÇÏ¿© Áø´Ü ´É·ÂÀ» Æò°¡ÇÏ¿´´Ù.

½ÇÇè½Ç ¿¬±¸¿¡¼­´Â Àΰø¿ì½Ä ¿ë¾×À» ÀÌ¿ëÇÏ¿© ¼ö°ÅµÈ 40°³ÀÇ À¯Ä¡¸¦ Çù¼³¸é¿¡ 2x3 mm Å©±âÀÇ Ã¢À» Çü¼ºÇÏ°í, 4, 8, 12, 16ÀÏ°£ Żȸ½ÃÅ°¸é¼­ ±× º¯È­¸¦ DIFOTI ½Ã½ºÅÛ°ú LFD¸¦ ÀÌ¿ëÇÏ¿© ÃøÁ¤ÇÏ°í À̸¦ CLSM°ú ºñ±³ ºÐ¼®ÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.

1. ±¸°­³»¿¡¼­ ÃÔ¿µµÈ DIFOTIÀÇ ¹Î°¨µµ´Â 88.2%À̾ú°í, ƯÀ̵µ´Â 76.9%À̾ú´Ù.

2. ±¸°­³»¿¡¼­ ÃøÁ¤µÈ LDDÀÇ ¹Î°¨µµ´Â 76.5%À̾ú°í, ƯÀ̵µ´Â 69.2%À̾ú´Ù.

3. ½ÇÇè½Ç ¿¬±¸¿¡¼­ À¯Ä¡ ¹ý¶ûÁúÀÇ Å»È¸ ±â°£¿¡ µû¸¥ DIFOTI ±¤Åõ°úÀ²ÀÇ È¸±Í ºÐ¼®ÇÑ °á°ú, Żȸ ½Ã°£¿¡ µû¶ó ±¤Åõ°úÀ²Àº °¨¼ÒÇÏ¿´´Ù.(r=-0.96, p<0.05).

4. ½ÇÇè½Ç¿¡¼­ Żȸ ±â°£¿¡ µû¸¥ LFDÀÇ ÃøÁ¤°ªÀÇ È¸±Í ºÐ¼® °á°ú Åë°èÀû À¯ÀǼºÀ» º¸ÀÌÁö ¾Ê¾Ò´Ù(p>0.05).

5. DIFOTI À̹ÌÁöÀÇ ±¤Åõ°úÀ²°ú CLMSÀÇ º´¼Ò ±íÀÌ¿¡ ´ëÇÑ »ó°ü °è¼ö´Â -0.688À̾úÀ¸³ª(p<0.05), LFDÀÇ ÃøÁ¤°ªÀº À¯ÀǼºÀ» º¸ÀÌÁö ¾Ê¾Ò´Ù.

The newly developed equipments for the early detection of carious lesion are LFD(laser fluorescence device), Ultrasonic diagnostic system. CLSM(confocal laser scanning microscopy), QLF(quantitative light-induced fluorescence) and DIFOTI(digital imaging fiber-optic trans-illumination) system.

In this study, DIFOTI system and LFD were used for the detection of early enamel caries.

Twenty five primary teeth extracted from twenty one children at around the dentitional exchanging period were selected as samples. The results obtained from DIFOTI imaging and LFD measurement were compared with those of CLSM and comprehensive evaluations were made for the diagnostic capacity of each device.

In vitro test, 40 sample teeth with their buccal & lingual surface formed by a window of 2x3 mm in diameter were immersed in artificial demineralizing solution for the period of 4,8,12 and 16 days. The results obtained from the experimental groups(DIFOTI, LFD) were compared to control group(CLSM) and we have reached to the following conclusions.

1. The sensitivity and specificity of DIFOTI system operated in oral environment was 88.2% and 76.9% respectively.

2. The sensitivity and specificity of LFD measured in oral environment was 76.5% and 69.2% respectively.

3. Regression analysis on the light transparent rate of DIFOTI showed its decrease according to the length of primary enamel decalcification performed in vitro(r=-0.96, p<0.05).

4. No statistically significant difference between LFT measurement and the length of in vitro decalcification was found in regression analysis(p>0.05).

5. The correlation coefficient of DIFOTI image transparent rate and the lesion depth of CLMS was 0.6988(p<0.05), whereas no statistically significant difference was found for LFD measurement.

Å°¿öµå

Digital Imaging Fiber-Optic Trans-Illumination;·¹ÀÌÀú Çü±¤ Áø´Ü±â;Á¶±â Áø´Ü;Ä¡¾Æ¿ì½ÄÁõ
Digital Imaging Fiber-Optic Trans-Illumination;Laser fluorescence;early detection;Dental caries

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