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EFFECT OF AGING IN DENTIN ON BOND STRENGTH OF DENTIN BONDING AGENTS

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Abstract

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Ä¡·É¿£ µû¸¥ »ó¾ÆÁú Á¢ÂøÁ¦ÀÇ °áÇÕ°­µµ¿¡ ´ëÇÑ È¿°ú¸¦ ¾Ë¾Æº¸±â À§ÇØ, ÃÖ±Ù¿¡ ¹ß°ÅµÈ À¯±¸
Ä¡, 20¼¼ ÀÌÇÏ ±¸Ä¡, 50¼¼ ÀÌ»ó ±¸Ä¡¸¦ ÀÌ¿ë, À̸¦ ´Ù½Ã °¢ µÎ ±ºÀ¸·Î ³ª´©¾î, ÇÑ ±º¿¡´Â »ó
¾ÆÁúÀÇ À¯±âÁú ¼ººÐ°ú °áÇÕÇÏ´Â °ÍÀ¸·Î ¾Ë·ÁÁø GlumaR¸¦, ´Ù¸¥ ÇÑ ±º¿¡´Â »ó
¾ÆÁúÀÇ ¹«±âÁú ¼ººÐ°ú °áÇÕÇÏ´Â °ÍÀ¸·Î ¾Ë·ÁÁø Clearfil New BondR¸¦ ó ¸®
ÇÏ°í º¹ÇÕ·¹ÁøÀ» Á¢Âø½ÃÄÑ °áÇÕ°­µµ¸¦ ÃøÁ¤ÇÏ°í, »ó¾ÆÁú Ç¥¸é ¹× ÆĴܸéÀ» ÁÖ»ç ÀüÀÚ Çö¹Ì
°æÀ¸·Î °üÂû, ºñ±³ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
»ó¾ÆÁúÀÇ À¯±âÁú ¼ººÐ°ú °áÇÕÇÏ´Â °ÍÀ¸·Î ¾Ë·ÁÁø Á¢ÂøÁ¦(GlumaR) »ç¿ë½Ã 50
¼¼ ÀÌ»ó Ä¡¾Æ¿¡¼­ ´õ ³ôÀº °áÇÕ°­µµ¸¦ ³ªÅ¸³»¾ú´Ù (p<0.05).
: »ó¾ÆÁúÀÇ ¹«±âÁú ¼ººÐ°ú °áÇÕÇÏ´Â °ÍÀ¸·Î ¾Ë·ÁÁø Á¢ÂøÁ¦ (Clearfil New
BondR) »ç¿ë½Ã ¿ª½Ã 50¼¼ ÀÌ»ó Ä¡¾Æ¿¡¼­ ´õ ³ôÀº °áÇÕ°­µµ¸¦ ³ªÅ¸³»¾ú´Ù
(p<0.05)
: ÆÄ´Ü¸é °üÂû¿¡¼­, °¡Àå ³ôÀº °áÇÕ°­µµ¸¦ ³ªÅ¸³½ 50¼¼ ÀÌ»ó ¿µ±¸Ä¡±º¿¡¼­´Â »ó¾Æ¼¼°ü ³»
¸¹Àº ¼öÀÇ ·¹Áø µ¹±â°¡ ÀÜÁ¸ÇØ ÀÖ´Â °ÍÀ» º¼ ¼ö ÀÖ¾ú´Ù.
#ÃÊ·Ï#
The purpose of this study was to evaluate the effect of aging in dentin on the
effectiveness of two dentin adhesives. Twenty human primary teeth and permanent teeth
extracted from patients aged below 20 years and above 50 years were prepared. The
prepared teeth were separated into two subgroups according to the dentin adhesives to
be used. GlumaR, which bonds chemically with the collagen in dentin, and
Clearfil New BondR, which bonds chemically with the calcium in dentin,
were used.
All specimens were stored in 37¡É distilled water for 24 hours.
Then, tensile bond strength was measured, and the treated dentin surfaces and
fractured dentin surfaces were examined under a scanning electron microscope.
The results were follows :
Teeth of the over-50 age group showed the highest tensile bond strength in both
dental bonding agents(P<0.05).
On the SEM examination, dentin surfaces treated with 40% phosphoric acid showed
open dentinal tubules without the smear layer or smear plugs. Dentin surfaces treated
with EDTA showed a clean dentin surface without the smear layer, but showed the
remaining smear plugs in dentinal tubules.
On the SEM observation of the fractured dentin surfaces, the primary teeth showed
little resin tags remaining in the dentinal tubules, but a few resin tags in the dentinal
tubules were observed in the teeth of the over-50 age group.

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