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EFFECT OF INTERMEDIATE RESIN HYDROPHILICITY ON BOND STRENGTH OF SINGLE STEP ADHESIVE

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±è¿ë¼º ( Kim Yong-Sung ) - °æÈñ´ëÇб³ ´ëÇпø Ä¡ÀÇÇаú Ä¡°úº¸Á¸Çб³½Ç
¹Ú»óÇõ ( Park Sang-Hyuk ) - °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

´ÜÀÏ°úÁ¤ Á¢ÂøÁ¦¸¦ ÀÌ¿ëÇÔ¿¡ ÀÖ¾î º¹ÇÕ·¹Áø°úÀÇ ºÎÀûÇÕ¼ºÀ» °³¼±ÇÏ°íÀÚ Áß°£·¹ÁøÀÌ °áÇÕ¿¡ ¿µÇâÀ» ¹ÌÄ¥ °ÍÀ¸·Î »ç·áµÈ´Ù. Experimental single step system (Bisco Ltd., Schaumburg, IL)À» ´ëÁ¶±ºÀ¸·Î ÇÏ°í 6Á¾ÀÇ Áß°£·¹ÁøÀ» Á¢ÂøÁ¦ÀÇ ÁßÇÕ¿©ºÎ, º¹ÇÕ·¹ÁøÀÇ ±¤ÁßÇÕ-ÀÚ°¡ÁßÇÕ ¿©ºÎ·Î ºÐ·ùÇÏ¿´´Ù. »ó¾ÆÁú¿¡ ´ëÇÑ ±¤ÁßÇÕ ¶Ç´Â ÀÚ°¡ÁßÇÕÇü º¹ÇÕ·¹ÁøÀÇ °áÇÕ°­µµ¸¦ ÃøÁ¤ÇÏ°í Á¢Âø°è¸é¿¡ ´ëÇÑ Åõ°úÀüÀÚÇö¹Ì°æ °üÂûÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù. 1. Áß°£·¹ÁøÀÇ Àû¿ëÀº ±¤ÁßÇÕÇü º¹ÇÕ·¹ÁøÀÇ °áÇÕ°­µµ¸¦ Áõ°¡½ÃÅ°Áö ¾Ê¾Ò´Ù. 2. ÀÚ°¡ÁßÇÕÇü º¹ÇÕ·¹ÁøÀÇ °áÇÕ°­µµ´Â Áß°£·¹ÁøÀ» Àû¿ëÇÒ °æ¿ì Áõ°¡ÇÏ¿´´Ù. 3. Áß°£·¹ÁøÀÇ Àû¿ë Àü Á¢ÂøÁ¦ÀÇ ÁßÇÕ¿©ºÎ´Â °áÇÕ°­µµÀÇ º¯È­¿¡ ¿µÇâÀ» ¹ÌÄ¡Áö ¾Ê¾Ò´Ù. 4. Áß°£·¹ÁøÀÌ Ä£¼ö¼ºÀÏ ¶§ ¼Ò¼ö¼º Áß°£·¹ÁøÀ» Àû¿ëÇÒ ¶§ º¸´Ù ³ôÀº °áÇÕ°­µµ¸¦ ³ªÅ¸³ÂÀ¸³ª Åë°èÀû À¯ÀÇÂ÷´Â ¾ø¾ú´Ù. ±¤ÁßÇÕÇü º¹ÇÕ·¹ÁøÀÇ ¼öº¹ ½Ã ´ÜÀÏ°úÁ¤ Á¢ÂøÁ¦¸¦ »ç¿ëÇÏ´Â °ÍÀº Ãʱ⠰áÇÕ°­µµ¿¡ ¿µÇâÀ» ¹ÌÄ¡Áö ¾ÊÀ¸¸ç, ÀÚ°¡ÁßÇÕÇü º¹ÇÕ·¹ÁøÀ» ´ÜÀÏ°úÁ¤ Á¢ÂøÁ¦¿Í »ç¿ëÇÒ ¶§´Â Á¢ÂøÃþÀÇ Åõ°úµµ¸¦ °¨¼Ò½ÃÅ°´Â ¼Ò¼ö¼ºÀÇ Áß°£·¹ÁøÀ» Àû¿ëÇÏ¿© ºÎÀûÇÕ¼ºÀ» ÇؼÒÇÒ ¼ö ÀÖÀ» °ÍÀÌ´Ù.

The purpose of this study was to evaluate the bond strength of a new Single step system with different curing mode composites, and to evaluate the effect of the intermediate resins which have different hydrophilicity on bonding ability by means of the micro shear bond testing and TEM examination for the adhesive interface. The adhesive used in this study was an experimental single step system (Bisco Inc., Schaumburg IL). Experimental groups were produced by using six kinds of intermediate resin having different hydrophilicity that was hydrophilic, hydrophobic and most hydrophobic resin and as filled or not after applying adhesive. Each experimental group was further divided into two subgroups whether the adhesive was light cured or not. Dual cured composite (Bis Core, Bisco Ltd., Schaumburg, IL) was placed on the adhesive layer as light cure or self cure mode. The results or bond strength were statistically analyzed using one way ANOVA and multiple comparisons are made using Tukey¡¯s test at ${\alpha}\;<\;0.05$ level. The results of this study were as follows ; 1. The application of intermediate resin did not increase the bond strength for light cured composite. 2. The bond strength of an experimental adhesive with self cured composite was significantly increased by the application of intermediate resin layer. 3. The bond strength of adhesive was irrespective of the cure or not of itself before intermediate resin layer applied. 4. As applied hydrophilic resin layer was, the initial bond strength was higher than both hydrophobic and most hydrophobic one used but there was no significance. Using a single step adhesive with dual/self cured composite, the incompatibility between both of them should be solved by the application of intermediate hydrophobic resin to reduce the adhesive permeability. However, Single step adhesive can be used in the light cured composite restoration without any decrease of the initial bond strength.

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New Single step system;Intermediate resin;Light cured;Filled;Hydrophobic;Initial bond strength

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