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IS AN OXYGEN INHIBITION LAYER ESSENTIAL FOR THE INTERFACIAL BONDING BETWEEN RESIN COMPOSITE LAYERS?

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Abstract

º» ¿¬±¸ÀÇ ¸ñÀûÀº ¿©·¯ °¡Áö °è¸éÁ¶°ÇÀÇ º¯È­¸¦ ÅëÇؼ­ layering½Ã º¹ÇÕ·¹Áø Ãþ°£ÀÇ °áÇÕ¿¡ oxygen inhibition layer (OIL)°¡ ÇʼöÀûÀÎÁö¸¦ °íÂûÇغ¸´Â °ÍÀÌ´Ù. °¡·Î ¼¼·Î µÎ²²°¡ 16 28 2.5 mmÀÎ ¾Ë·ç¹Ì´½ÆÇ¿¡ Áö¸§ 3.7 mmÀÇ ±¸¸ÛÀ» Çü¼ºÇÏ¿© ¸ôµå¸¦ Á¦ÀÛÇÏ°í ´ÙÀ½°ú °°ÀÌ º¹ÇÕ·¹Áø (Z-250, 3M ESPE)À» ÃæÀüÇÏ¿© ±¤ÁßÇÕÇÏ¿´´Ù. 1 ±º: ÇÏÃþÆÇ¿¡ º¹ÇÕ·¹ÁøÀ» ÃæÀüÇÏ°í ±¤ÁßÇÕ ÇÑ ÈÄ, »óÃþÆÇÀ» Á¢ÇÕÇÏ°í ·¹ÁøÀ» ÃæÀüÇÏ¿© ±¤ÁßÇÕÀ» ÇÏ¿´´Ù (OIL¸¦ ³²±è). 2 ±º: ÇÏÃþÆÇ¿¡ º¹ÇÕ·¹ÁøÀ» ÃæÀüÇÏ°í ±¤ÁßÇÕ ÇÑ ÈÄ acetone¿¡ Àû½Å cottonÀ¸·Î ¹®Áú·¯¼­ OIL¸¦ Á¦°ÅÇÏ°í »óÃþÆÇÀ» Á¢ÇÕÇÏ¿© º¹ÇÕ·¹ÁøÀ» ÃæÀüÇÏ°í ±¤ÁßÇÕÀ» ÇÏ¿´´Ù (OIL¸¦ Á¦°Å). 3 ±º: ÇÏÃþÆÇ¿¡ º¹ÇÕ·¹ÁøÀ» ÃæÀüÇÏ°í Mylar stripÀ» Á¢ÇÕÇÏ¿© °ø±â¿ÍÀÇ Á¢ÃËÀ» Â÷´ÜÇÑ ÈÄ ±¤ÁßÇÕÀ» ÇÏ¿´´Ù. Mylar stripÀ» Á¦°ÅÇÏ°í »óÃþÆÇÀ» Á¢ÇÕ ÈÄ º¹ÇÕ·¹ÁøÀ» ÃæÀüÇÏ¿© ±¤ÁßÇÕÀ» ÇÏ¿´´Ù (OILÇü¼ºÀ» ¾ïÁ¦). 4 ±º: ÇÏÃþÆÇ¿¡ º¹ÇÕ·¹ÁøÀ» ÃæÀüÇÏ°í ±¤ÁßÇÕ ÇÑ ÈÄ glycerinÀ» OIL Ç¥¸é¿¡ µµÆ÷ÇÏ°í ´Ù½Ã ±¤ÁßÇÕÇÏ¿´´Ù. »óÃþÆÇÀ» Á¢ÇÕÇÏ¿© º¹ÇÕ·¹ÁøÀ» ÃæÀüÇÏ°í ±¤ÁßÇÕÀ» ÇÏ¿´´Ù (OIL¸¦ ÁßÇÕ). 5±º (´ëÁ¶±º): ÇÏÃþÆÇ°ú »óÃþÆÇÀÇ °æ°è¿¡ º¹ÇÕ·¹ÁøÃþÀÇ °è¸éÀÌ À§Ä¡ÇÏÁö ¾Êµµ·Ï º¹ÇÕ·¹ÁøÀ» bulkÃæÀüÇÏ¿´´Ù (°è¸éÇü¼º ¾øÀÌ bulk ÃæÀüÇÑ º¹ÇÕ·¹Áø). 24 ½Ã°£ 100% ½Àµµ¿¡¼­ º¸°ü ÈÄ »óÃþÆÇ°ú ÇÏÃþÆÇ »çÀÌÀÇ °è¸é Àü´Ü°áÇÕ°­µµ¸¦ ÃøÁ¤ÇÏ°í ÆÄÀý ¾ç»óÀ» °üÂûÇÏ¿´´Ù. °è¸éÀ» ÅëÇÑ ÁßÇÕ°úÁ¤ÀÇ È®»êÀ» °üÂûÇϱâ À§ÇÏ¿© Á¦Á¶ÇÑ ±¤°³½ÃÁ¦°¡ µé¾îÀÖÁö ¾ÊÀº ½ÇÇèÀû º¹ÇÕ·¹Áø (Exp_Com)À» ¸ôµå¿¡ ÃæÀüÇÏ°í »óºÎ¿¡ flowable º¹ÇÕ ·¹Áø (Aelite Flow) ¶Ç´Â Á¢Âø·¹Áø (ScotchBond Multipurpose)À» Á¢Ã˽ÃŲ ÈÄ ±¤Á¶»çÇÏ¿´´Ù. ¸ôµå³»ÀÇ ¹ÌÁßÇÕµÈ Exp_ComÀ» acetone bath ¿¡¼­ 5 ºÐ µ¿¾È Á¦°ÅÇÑ ÈÄ ¸ôµå³»¿¡ ´Ù½Ã Aelite Flow¸¦ ÃæÀüÇÏ°í ±¤ÁßÇÕÀ» ½ÃÇàÇÏ¿´´Ù. °æÈ­µÈ º¹ÇÕ·¹Áø ½ÃÆíÀÇ ´Ü¸éÀ» °üÂûÇÏ¿© Exp_Com ÃþÀÇ µÎ²²¸¦ ÃøÁ¤ÇÏ¿´´Ù. OIL¸¦ ¹èÁ¦Çϰųª ÁßÇÕ½ÃŲ 2-4±ºÀº OILÀÌ Á¸ÀçÇÏ´Â 1 ±º°ú Åë°èÀûÀ¸·Î À¯ÀÇÇÑ °áÇÕ°­µµÀÇ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾ÒÀ¸¸ç, Mylar stripÀ» ÀÌ¿ëÇÏ¿© OILÀÇ »ý¼ºÀ» ¾ïÁ¦Çß´ø 3±º°ú glycerinÀ» µµÆ÷ÇÏ¿© OIL¸¦ ÁßÇÕ½ÃŲ 4±ºÀº °è¸éÀ» »ý¼ºÇÏÁö ¾ÊÀº ´ëÁ¶±ºÀÎ 5 ±º°úµµ Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù. ÁßÇÕ°úÁ¤ÀÇ È®»ê¿¡ ÀÇÇØ ÁßÇÕ°³½ÃÁ¦°¡ Æ÷ÇÔµÇÁö ¾ÊÀº Exp_Com³»¿¡ ÁßÇÕµÈ ÃþÀÌ »ý°Ü³­ °ÍÀ» ½Ã°¢ÀûÀ¸·Î È®ÀÎÇÒ ¼ö ÀÖ¾úÀ¸¸ç, Exp_ComÀÇ ÁßÇÕÃþ µÎ²²´Â flowable ·¹ÁøÀÇ °æ¿ì 20.95 (0.90) um¿´°í Á¢Âø·¹ÁøÀÇ °æ¿ì 42.13 (2.09) ¿´´Ù.

This study was aimed to investigate whether an oxygen inhibition layer (OIL) is essential for the interfacial bonding between resin composite layers or not. A composite (Z-250, 3M ESPE) was filled in two layers using two aluminum plate molds with a hole of 3.7 mm diameter. The surface of first layer of cured composite was prepared by one of five methods as followings, thereafter second layer of composite was filled and cured: Group 1 - OIL is allowed to remain on the surface of cured composite; Group 2 - OIL was removed by rubbing with acetone-soaked cotton; Group 3 - formation of the OIL was inhibited using a Mylar strip; Group 4 - OIL was covered with glycerin and light-cured; Group 5 (control) - composite was bulk-filled in a layer. The interfacial shear bond strength between two layers was tested and the fracture modes were observed. To investigate the propagation of polymerization reaction from active area having a photo-initiator to inactive area without the initiator, a flowable composite (Aelite Flow) or an adhesive resin (Adhesive of ScotchBond Multipurpose) was placed over an experimental composite (Exp_Com) which does not include a photoinitiator and light-cured. After sectioning the specimen, the cured thickness of the Exp_Com was measured. The bond strength of group 2, 3 and 4 did not show statistically significant difference with group 1. Groups 3 and 4 were not statistically significant different with control group 5. The cured thicknesses of Exp_Com under the flowable resin and adhesive resin were 20.95 (0.90) urn and 42.13 (2.09), respectively.

Å°¿öµå

»ê¼ÒÁßÇÕ¾ïÁ¦Ãþ;°è¸é°áÇÕ;º¹ÇÕ·¹Áø;flowable ·¹Áø;Á¢Âø·¹Áø;ÁßÇյβ²
Oxygen inhibition layer;Interfacial bonding;Resin composite;Flowable composite;Adhesive resin;Cured thickness

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