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Elemental analysis of the fluoride varnish effects on root caries initiation

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¹Ú¼¼Àº ( Park Se-Eun ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Á¸Çб³½Ç
À̱â¿í ( Lee Kee-Wook ) - Çѱ¹±âÃÊ¿¬±¸°úÇÐÁö¿ø¿¬±¸¿ø
±èÇý¿µ ( Kim Hae-Young ) - °í·Á´ëÇб³ º¸°Ç°úÇдëÇÐ Ä¡±â°øÇаú
¼ÕÈ£Çö ( Son Ho-Hyun ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Á¸Çб³½Ç
ÀåÁÖÇý ( Chang Ju-Hea ) - ¼­¿ï´ëÇб³ Ä¡°úº´¿ø

Abstract

¿¬±¸ ¸ñÀû: ¿ì½Ä Àú À§Ç豺¿¡¼­ Àú ³óµµ ºÒ¼Ò ¹Ù´Ï½¬°¡ Ãʱâ Ä¡±Ù ¿ì½Ä ¿¹¹æ ¹× Ä¡·á¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» °ËÁõÇÏ°íÀÚ ÇÑ´Ù.
¿¬±¸ Àç·á ¹× ¹æ¹ý: °ÇÀüÇÑ ÇÏ¾Ç ¼Ò±¸Ä¡ 10°³¸¦ ÁغñÇÏ¿© Ä¡°üºÎ¸¦ Á¦°ÅÇÏ°í Çù¼³, ±Ù¿ø½É ¹æÇâÀ¸·Î Ä¡¾Æ ÀåÃà¿¡ ÆòÇàÇÏ°Ô Àý´Ü ÈÄ ¹é¾Ç-¹ý¶ûÁú °æ°èºÎ 4 mm ÇϹ濡¼­ Àý´ÜÇÏ¿© 40°³ÀÇ ½ÃÆíÀ» Á¦ÀÛÇÏ¿´´Ù. °¢°¢ÀÇ Ä¡±Ù Ç¥¸é¿¡ Çü¼ºµÈ 4 mm 1 mm Å©±âÀÇ Ã¢¿¡ Fluor Protector (1,000 ppm ºÒ¼Ò ÇÔÀ¯)¸¦ µµÆ÷ÇÏ¿´´Ù. ÇÑ Ä¡¾Æ¿¡¼­ ³ª¿Â 4 °³ÀÇ ½ÃÆíÀ» ´ÙÀ½°ú °°Àº 4°³ ½ÇÇ豺¿¡ °¢°¢ ¹èÁ¤ÇÏ¿´´Ù. A±º: pH cycling ¾øÀÌ ºÒ¼Ò ¹Ù´Ï½¬ µµÆ÷; B±º: pH cycling½ÃÇà ÈÄ ºÒ¼Ò ¹Ù´Ï½¬ µµÆ÷; C±º: ºÒ¼Ò ¹Ù´Ï½¬ µµÆ÷ ÈÄ pH cycling½ÃÇà; D±º: pH cyclingÀ» ½ÃÇàÇÑ µÚ ºÒ¼Ò ¹Ù´Ï½¬ µµÆ÷ ÈÄ pH cycling Àç ½ÃÇà. ½ÃÆíÀ» Á¤Áߺο¡¼­ Àý´ÜÇÏ°í ´Ü¸é ºÎÀ§¸¦ ¿¬¸¶ÇÑ µÚ ÀüÀÚÇö¹Ì°æÀ¸·Î Ç¥¸éÀ» °üÂûÇÏ¿´´Ù. X¼± ºÐ±¤ºÐ¼®À» ÅëÇÏ¿© Ca°ú PÀÇ Áß·® ºñ¸¦ ÃøÁ¤ÇÏ°í °ø ÃÊÁ¡ ·¹ÀÌÀú Çö¹Ì°æÀ¸·Î ¹Ù´Ï½¬°¡ µµÆ÷µÈ Ä¡±Ù ¸éÀ» °üÂûÇÏ¿´´Ù.

°á°ú: Ä¡±Ù Ç¥¸é¿¡´Â Æò±Õ 12.3 (2.6) (single cycling) °ú 19.6 (3.8) (double cycling) ±íÀÌÀÇ ¿ì½ÄÀÌ Çü¼ºµÇ¾ú´Ù. Ç¥ÃþÀÇ Ä®½· ÇÔ·®Àº Á¤»ó Ä¡±Ù¿¡ ºñÇØ À¯ÀÇÇÒ¸¸ÇÑ Â÷ÀÌ°¡ ¾ø¾úÀ¸³ª(p > 0.05), Ç¥Ãþ ÇÏ Å»È¸ ¿µ¿ªÀÇ Ä®½· ÇÔ·®Àº À¯ÀÇÇÒ¸¸ÇÏ°Ô °¨¼ÒÇÏ¿´´Ù(p < 0.05). ºÒ¼Ò ¹Ù´Ï½¬ÀÇ Àû¿ëÀº °ÇÀüÇÑ Ä¡±ÙÀ̳ª Ãʱ⠿ì½ÄÀÌ ÀÖ´Â Ä¡±Ù¿¡ Àû¿ëÇßÀ» °æ¿ì ¸ðµÎ¿¡¼­ À¯ÀÇÇÒ¸¸ÇÑ Â÷À̸¦ °¡Á®¿ÀÁö ¾Ê¾Ò´Ù(p > 0.05). ¹Ù´Ï½¬ÀÇ Ä¡±Ù »ó¾ÆÁú Åõ°ú ±íÀ̴ ǥ¸é 15 À̳»¿¡ ÇÑÁ¤µÇ¾ú´Ù.

°á·Ð: Ç¥ÃþÀÌ °ÇÀüÇÑ 20 À̳»ÀÇ Ãʱâ Ä¡±Ù ¿ì½Ä º´¼ÒÀÇ ¾ç»ó°ú »ê °ø°Ý¿¡ ´ëÇÑ º¯È­¸¦ °üÂûÇÑ °á°ú, Àú ³óµµÀÇ ºÒ¼Ò ¹Ù´Ï½¬¸¦ ´Ü±â°£ Àû¿ëÇÏ´Â °ÍÀº Ä¡±ÙÀÇ Å»È¸ ¹ÝÀÀ¿¡ ¿µÇâÀ» ÁÖÁö ¸øÇÏ¿´´Ù.

Objectives: The usage of fluoride varnish for a moderate to low caries-risk group has not been well validated. This study aimed to evaluate the preventive and therapeutic efficacies of fluoride varnish on the initiated root caries.
Materials and Methods: Ten premolars were sectioned into quarters, further divided into two windows, one of which was painted with Fluor Protector (1,000 ppm fluoride, Ivoclar Vivadent). An initial lesion with a well-preserved surface layer was produced by pH cycling. Scanned line analysis using energy dispersive spectrometry determined the weight percentages of Ca and P in the demineralized layer. Scanning Electron microscopy and confocal laser scanning microscopy (CLSM) evaluated the varnish-applied root surfaces.

Results: The mean lesion depth (SD) was 12.3 (2.6) (single cycling) and 19.6 (3.8) (double cycling). Double cycling extended the lesion depth, but induced no more mineral loss than single cycling (p < 0.05). The mean weight percentages of Ca and P between groups with and without varnish were not significantly different (p < 0.05). A CLSM showed varnish remained within 15 of the surface layer.

Conclusions: When a mild acid challenge initiated root tissue demineralization, the application of low-concentration fluoride varnish did not influence the lesion depth or the mineral composition of the subsurface lesion.

Å°¿öµå

¹Ù´Ï½¬; ºÒ¼Ò; ¿ø¼ÒºÐ¼®; Ä¡±Ù ¿ì½ÄÁõ
Elemental analysis; Fluoride; Root caries; Varnish

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