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THE EFFECT OF THE REMOVAL OF CHONDROITIN SULFATE ON BOND STRENGTH OF DENTIN ADHESIVES AND COLLAGEN ARCHITECTURE

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±èÁ¾·ü, ¹Ú»óÁø, ÃÖ±â¿î, ÃÖ°æ±Ô,
¼Ò¼Ó »ó¼¼Á¤º¸
±èÁ¾·ü ( Kim Jong-Ryul ) - °æÈñ´ëÇб³ ´ëÇпø Ä¡ÀÇÇаú Ä¡°úº¸Á¸Çб³½Ç
¹Ú»óÁø ( Park Sang-Jin ) - °æÈñ´ëÇб³ ´ëÇпø Ä¡ÀÇÇаú Ä¡°úº¸Á¸Çб³½Ç
ÃÖ±â¿î ( Choi Gi-Woon ) - °æÈñ´ëÇб³ ´ëÇпø Ä¡ÀÇÇаú Ä¡°úº¸Á¸Çб³½Ç
ÃÖ°æ±Ô ( Choi Kyoung-Kyu ) - °æÈñ´ëÇб³ ´ëÇпø Ä¡ÀÇÇаú Ä¡°úº¸Á¸Çб³½Ç

Abstract

º» ¿¬±¸´Â »ó¾ÆÁúÀÇ ºñ±³¿ø¼º ´Ü¹éÁúÀ» chondroitinase ABC (C-ABC)¸¦ ÀÌ¿ëÇÏ¿© Á¦°ÅÇÔÀ¸·Î½á ºñ±³¿ø¼º ´Ü¹éÁúÀÇ Á¦°Å°¡ »ó¾ÆÁú Á¢ÂøÁ¦ÀÇ ¹Ì¼¼ÀÎÀå°áÇÕ°­µµ¿Í ±³¿øÁú¸ÁÀÇ ÇüÅ¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» »ó¾ÆÁúÀÇ ´Ù¾çÇÑ ½ÀÀ±»óÅ¿¡ µû¶ó Æò°¡ÇÏ°íÀÚ ½ÃÇàÇÏ¿´´Ù. ºñ±³¿ø¼º ´Ü¹éÁúÀÇ »ó¾ÆÁúÁ¢ÂøÁ¦ÀÇ ¹Ì¼¼ÀÎÀå°­µµ¿¡ ´ëÇÑ ¿µÇâÀ» Æò°¡Çϱâ À§ÇØ Á¦ 3´ë±¸Ä¡ÀÇ »ó¾ÆÁúÀ» ³ëÃâ½ÃÅ°°í, µÎ ±ºÀ¸·Î ³ª´©°í ÇÑ ±ºÀº C-ABC, ´Ù¸¥ ±ºÀº Áõ·ù¼ö¸¦ ¿¡¼­ 48½Ã°£ µ¿¾È Àû¿ëÇÑ ÈÄ, »ó¾ÆÁúÀÇ ½ÀÀ±»óÅÂ(wet, dry ¹× re-wet)¿Í »ó¾ÆÁú Á¢ÂøÁ¦(Single Bond 2, One Step Plus)¸¦ ´Ù¸£°Ô ÀÌ¿ëÇÏ¿© º¹ÇÕ·¹ÁøÀ» ¼öº¹ÇÏ¿´´Ù. 24½Ã°£ ÈÄ °¡·Î 1 mm, ¼¼·Î 1mmÀÇ ½ÃÆíÀ» Á¦ÀÛÇÏ°í ¹Ì¼¼ÀÎÀå°­µµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. »ó¾ÆÁú ±³¿øÁúÀÇ Çüź¯È­¸¦ °üÂûÇϱâ À§ÇÏ¿© »ó¾ÆÁú ½ÃÆí¿¡ »êºÎ½ÄÀ» ½ÃÇàÇÏ°í C-ABC Àû¿ë ÈÄ, ½ÃÆíÀ» Á¦ÀÛÇÏ¿´°í ¹Ì¼¼ÀÎÀå°­µµ ÃøÁ¤ÈÄ Æı«µÈ Á¢Âø¸éÀÇ Æı«¾ç»ó°ú °¢ Á¢ÂøÁ¦ÀÇ Á¢Âø°è¸é °üÂûÀ» À§ÇÏ¿© FE-SEM °üÂûÇÏ¿´´Ù. C-ABC 󸮿©ºÎ¿Í °ü°è¾øÀÌ ½ÀÀ±ÇÑ »ó¾ÆÁú¸é¿¡ Á¢ÂøÇÑ ±ºÀº ¸ðµç Á¢ÂøÁ¦¿¡¼­ Åë°èÇÐÀûÀ¸·Î À¯ÀǼºÀÖ´Â ¹Ì¼¼ÀÎÀå°áÇÕ°­µµÀÇ Â÷À̸¦ ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù(p > 0.05). C-ABC¸¦ Àû¿ëÇÏ¿´À» °æ¿ì, Single Bond 2¿¡¼­´Â Àç¼öÈ­ÇÑ »ó¾ÆÁú¸é¿¡ Á¢ÂøÇÑ ±ºÀÌ ½ÀÀ±ÇÑ »ó¾ÆÁú¸é¿¡ Á¢ÂøÇÑ ±º¿¡ ºñÇØ ¹Ì¼¼ÀÎÀå°áÇÕ°­µµ°¡ °¨¼ÒÇÏ¿´´Ù(p < 0.05). FE-SEM °üÂû°á°ú, C-ABC¸¦ Àû¿ëÈÄ¿¡´Â Á¢Âø¼º Æı«°¡ ÁÖ·Î ÀϾÀ¸¸ç, ±³¿øÁú ¼¶À¯°£ °Å¸®°¡ Áõ°¡ÇÏ¿´À¸¸ç ºÎºÐÀûÀ¸·Î ±³¿øÁú ¼¶À¯µé°£¿¡ ÀÀÁýµÈ ¾ç»óÀÌ °üÂûµÇ¾ú´Ù.

Proteoglycan is highly hydrophilic and negatively charged which enable them attract the water. The objective of study was to investigate the effects of Proteoglycan on microtensile bond strength of dentin adhesives and on architecture of dentin collagen matrix of acid etched dentin by removing the chondroitin sulphate attached on Proteoglycan. A flat dentin surface in mid-coronal portion of tooth was prepared. After acid etching, half of the specimens were immersed in 0.1 U/mL chondroitinase ABC (C-ABC) for 48 h at , while the other half were stored in distilled water. Specimens were bonded with the dentin adhesive using three different bonding techniques (wet, dry and re-wet) followed by microtensile bond strength test. SEM examination was done with debonded specimen, resin-dentin interface and acid-etched dentin surface with/without C-ABC treatment. For the subgroups using wet-bonding or dry-bonding technique, microtensile bond strength showed no significant difference after C-ABC treatment (p > 0.05). Nevertheless, the subgroup using rewetting technique after air dry in the Single Bond 2 group demonstrated a significant decrease of microtensile bond strength after C-ABC treatment. Collagen architecture is loosely packed and some fibrils are aggregated together and relatively collapsed compared with normal acid-etched wet dentin after C-ABC treatment. Further studies are necessary for the contribution to the collagen architecture of noncollagenous protein under the various clinical situations and several dentin conditioners and are also needed about long-term effect on bond strength of dentin adhesive.

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ºñ±³¿ø¼º ´Ü¹éÁú; ±³¿øÁú ±¸Á¶; »ó¾ÆÁú Á¢ÂøÁ¦; ¹Ì¼¼ÀÎÀåÁ¢Âø°­µµ
Chondroitin Sulphate; Collagen Architecture; Dentin Adhesive; Noncollagenous Protein; Microtensile Bond Strength

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