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QUANTITATIVE COMPARISON OF PERMEABILITY IN THE ADHESIVE INTERFACE OF FOUR ADHESIVE SYSTEMS

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ÀåÁÖÇý ( Chang Ju-Hea ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Á¸Çб³½Ç
À̱â¿í ( Lee Kee-Wook ) - Çѱ¹±âÃÊ¿¬±¸°úÇÐÁö¿ø¿¬±¸¿ø
±èÇý¿µ ( Kim Hae-Young ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇлý¸í°úÇлê¾÷´Ü(BK 21)
ÀÌÀκ¹ ( Lee In-Bog ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Á¸Çб³½Ç
Á¶º´ÈÆ ( Cho Byung-Hoon ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Á¸Çб³½Ç
¼ÕÈ£Çö ( Son Ho-Hyun ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Á¸Çб³½Ç

Abstract

º» ¿¬±¸´Â ÇöÀç ½ÃÆÇ µÇ°í ÀÖ´Â ¿©·¯ °³ÀÇ »ó¾ÆÁú Á¢ÂøÁ¦¸¦ ÀÓ»ó ¼ú½Ä¿¡¼­¿Í °°Àº ¹æ¹ýÀ¸·Î »ç¿ëÇÑ ´ÙÀ½ ¿­¼øȯ ÈÄ Á¢Âø°è¸éÀÇ º¯È­¸¦ °üÂû ºñ±³ÇÏ°íÀÚ Çß´Ù. ¹ß°Å ÇÑÁö ÇÑ ´Þ À̳»ÀÎ ´ë±¸Ä¡ 28°³ÀÇ ±³ÇÕ¸é »ó¾ÆÁú Ç¥¸é¿¡ 4Á¾ÀÇ »ó¾ÆÁú Á¢ÂøÁ¦ (OptiBond FL [OP], AdheSE [AD], Clearfil SE Bond [CL], Xeno III [XE]) Áß Çϳª¸¦ Àû¿ëÇÑ µÚ º¹ÇÕ ·¹Áø (Premisa, Kerr) À» 1 mm µÎ²²·Î ¿Ã¸° ÈÄ ±¤ÁßÇÕ ÇÏ¿´´Ù. Áõ·ù¼ö¿¡¼­ 6ÀÏ°£ º¸°üÇÑ µÚ, Ä¡¾ÆÀÇ Á¤Áß¼±À¸·ÎºÎÅÍ ¼öÁ÷À¸·Î Àý´Ü ÇÏ¿© ±× Áß Àý¹ÝÀÇ Ä¡¾Æ¿¡¼­ 2 mm µÎ²²ÀÇ ½ÃÆíÀ» ¾òÀº ´ÙÀ½ ³²Àº ¹ÝÂÊÀÇ Ä¡¾Æ´Â 10,000ȸÀÇ ¿­¼øȯÀ» °¡ÇÑ µÚ (, ħÁö ½Ã°£ 25ÃÊ, ´ë±â ½Ã°£ 5ÃÊ) °°Àº ¹æ¹ýÀ¸·Î 2 mm µÎ²²ÀÇ ½ÃÆíÀ» ¾ò¾ú´Ù. ¿¬¸¶ÇÑ ½ÃÆíÀ» 24½Ã°£ µ¿¾È 50% ammoniacal silver nitrate solution¿¡ ´ã±Ù ´ÙÀ½ photo-developing solution¿¡¼­ 8½Ã°£ µ¿¾È ȯ¿ø½ÃÄ×´Ù. °è¸éÀ» °¡·ÎÁö¸£´Â 5°³ÀÇ line»ó¿¡¼­ wavelength dispersive spectrometry (WDS) detector¸¦ ÀÌ¿ëÇÏ¿© ÁÖ»çÀü»ó¿¡ ÀÖ´Â ¿ø¼ÒµéÀÇ Áß·®ºñ¸¦ °è»êÇÏ¿´´Ù. ¶ÇÇÑ ¿­¼øȯ Àü°ú ÈÄÀÇ ½ÃÆí¿¡¼­ ¾ò¾îÁø 5°³ÀÇ silver ÃøÁ¤Ä¡¸¦ ¼­·Î ºñ±³ÇÏ¿´´Ù. ¿­¼øȯ ÀüÀÇ Á¢ÂøÁ¦Ãþ(adhesive layer)¿¡¼­´Â OP¿¡¼­ °¡Àå ÀûÀº silverÀÇ Åõ°ú°¡ °üÂûµÇ¾úÀ¸¸ç (p < 0.0001), CL, AD, XE ¼øÀ¸·Î Åõ°ú ·®ÀÌ Áõ°¡ÇÔÀ» º¸¿´´Ù. È¥¼ºÃþ (Hybrid layer) ¿¡¼­´Â CLÀÇ Åõ°ú·®ÀÌ °¡Àå Àû¾ú´Ù (p = 0.0039). ¿­¼øȯ ÈÄ¿¡ Á¢ÂøÁ¦Ãþ°ú È¥¼ºÃþ¿¡¼­ silverÀÇ Åõ°ú·®Àº Áõ°¡ÇÏÁö´Â ¾Ê¾Ò´Ù. Scanning electron microscopy (SEM) »çÁøÀ» ÅëÇÏ¿© °¢ ½ÃÆíÀÇ Á¢Âø °è¸é¿¡¼­ Á¢ÂøÁ¦¿¡ µû¸¥ ƯÀÌÀûÀÎ silverÀÇ Åõ°ú»óÀ» °üÂûÇÒ ¼ö ÀÖ¾ú´Ù. Àü¹ÝÀûÀ¸·Î OP ¿Í CLÀÇ Á¢Âø°è¸éÀÌ ¿­¼øȯ °úÁ¤ Áß¿¡µµ ¿ÂÀüÈ÷ À¯ÁöµÊÀ» º¼ ¼ö ÀÖ¾ú´Ù. Á¢Âø °è¸é¿¡¼­ÀÇ ¼öºÐ Åõ°ú ¾ç»óÀº °¢ Á¢ÂøÁ¦¿¡ µû¶ó ´Ù¸¥ ÇüŸ¦ º¸¿´À¸¸ç ¿­ ¼øȯ¿¡ ÀÇÇØ À¯ÀÇÇÒ ¸¸ÇÑ º¯È­¸¦ ¾ß±âÇÏÁö´Â ¾Ê¾Ò´Ù.

The purpose of this study was to perform quantitative comparisons of water permeable zones in both the adhesive and the hybrid layer before and after thermo cycling in order to assess the integrity of the bonding interface. Twenty eight flat dentin surfaces were bonded with a light-cured composite resin using one of four commercial adhesives [OptiBond FL (OP), AdheSE (AD), Clearfil SE Bond (CL). and Xeno III (XE)]. These were sectioned into halves and subsequently cut to yield 2-mm thick specimens; one specimen for control and the other subjected to thermocycling for 10,000 cycles. After specimens were immersed in ammoniacal silver nitrate for 24 h and exposed to a photo developing solution for 8 h, the bonded interface was analyzed by scanning electron microscopy (SEM) and wavelength dispersive spectrometry (WDS) at five locations per specimen. Immediately after bonding. the adhesive layer of OP showed the lowest silver uptake, followed by CL, AD. and XE in ascending order (p < 0.0001); the hybrid layer of CL had the lowest silver content among the groups (p = 0.0039). After thermocycling, none of the adhesives manifested a significant increase of silver in either the adhesive or the hybrid layer. SEM demonstrated the characteristic silver penetrated patterns within the interface. It was observed that integrity of bonding was well maintained in OP and CL throughout the thermocycling process. Adhesive-tooth interfaces are vulnerable to hydrolytic degradation and its permeability varies in different adhesive systems, which may be clinically related to the restoration longevity.

Å°¿öµå

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Dentin;Adhesive;SEM;WDS;Thermocycling;Permeability

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