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BOND STRENGTH AND MICROLEAKAGE IN RESIN BONDING TO TOOTH STRUCTURE

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Kim, Jin-Hee/±èÁøÈñ Park, Jeong-Won/Park, Jin-Hoon/Kim, Sung-Kyo/¹ÚÁ¤¿ø/¹ÚÁøÈÆ/±è¼º±³

Abstract

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Ä¡Áú°ú ·¹Áø¼öº¹¹°°£ÀÇÁ¢Âø°­µµ¸¦ °¡¿Í½ÃÅ´À¸·Î½á º¯¿¬ºÎÀ§ÀÇ ´©ÃâÇö»óÀ» ±Øº¹ÇÒ ¼ö ÀÖ´Ù´Â ÀνÄÇÏ¿¡ ¸¹Àº Á¾·ùÀÇ »ó¾ÆÁú Á¢ÂøÁ¦¿¡ ´ëÇÑ Á¢Âø°­µµ °Ë»ç¿Í ¹Ì¼¼´©Ã⠰˻簡 ÇàÇØÁ³À¸³ª Á¢Âø°­µµ¿Í º¯¿¬´©Ãâ°£ÀÇ °ü°è¿¡ ´ëÇÑ Á÷Á¢ÀûÀÎ ¿¬±¸´Â ¹ÌÈíÇÑ »óÅÂÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â ¿ìÄ¡¸¦ ÀÌ¿ëÇÑ µ¿¸®½ÃÆí¿¡¼­ Á¢Âø°­¤§¿Í ¹Ì¼¼´©ÃâÀÇÁ¤µµ¸¦ ÃøÁ¤ÈÄ »óÈ£°ü°è¸¦ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.
¼ÒÀÇ ÇÏ¾Ç ÀüÄ¡¸¦ ÀÌ¿ëÇÏ¿© ¹ö¶ûÁú ¶Ç´Â »ó¾ÆÁú ½ÃÆíÀ» °¢ ±º¹Ù´Ù 30°³¾¿ ÁغñÇÏ¿´´Ù. 32%ÀλóÀ¸·Î 15ÃÊ Ã³¸® ¹× 20Ãʼö¼¼ÈÄ ÁöÁúó¸® ¹æ¹ý¿¡ µû¶ó ¤Ã¤²¶ûÁú/¿ÏÀü °ÇÁ¶½ÃŲ ±º, ¹ý¶ûÁú/½ÀÀ±»óÅÂÀÇ ±º, »ó¾ÆÁú/¿ÏÀü °ÇÁËŲ ±º, »ó¾ÆÁú/½ÀÀ±»óÅÂÀÇ ±ºÀ¸·Î ³ª´©¾ú´Ù.°¢±ºÀÇ ½ÃÆíÀ» One-Step^TM adhesive¸¦ Àû¿ëÈÄ Charisma º¹ÇÕ·¹ÁøÀ¸·Î ÃæÀüÇÏ¿´´Ù.
1. ¹ý¶ûÁú ¹× »ó¾ÆÁú ±º °øÈ÷ Á¢Âø°­µµ¿Í ¹Ì¼¼´©ÃâÀ» ºñ±³½Ã À¯ÀÇÇÑ À½ÀÇ »ó°ü °ü°è¸¦ ³ªÅ¸³»¾î Á¢Âø°­µµ°¡ ³ôÀ» ¼ö·Ï ¹Ì¼¼º¯¿¬´©ÃâÀº Àû°Ô ³ªÅ¸³ª´Â °æÇâÀ» ³ªÅ¸³»¾ú´Ù(r=0.50.P<0.05)
2. ¹ý¶ûÁú ±º ¹× »ó¾ÆÁú ±º °øÈ÷ ½ÀÀ±»óÅÂÀÇ ½ÃÆíÀÌ ¿ÏÀüÈ÷ °ÅÁ¶µÈ ½ÃÆí¿¡ ºñÇØ ³ôÀº Á¢Âø°­µµ¸¦ ³ªÅ¸³»¾ú´Ù(P<0.05)
3. »ó¾ÆÁú¿¡¼­´Â ½ÀÀ±»óÅÂÀ¸ ±ºÀÌ °ÇÁ¶½ÃŲ ±º »çÀÌ¿¡ À¯ÀÇÇÏ°Ô ÀûÀº ¹Ì¼¼º¯¿¬ ´©ÃâÀ» ³ªÅ¸³½ ¹Ý¸é(P<0.05).¹ý·®Áú¿¡¼­´Â ½ÀÀ±»óÅÂÀDZº°ú °ÇÁ¶½ÃŲ ±º »çÀÌ¿¡ ¹Ì¼¼º¯¿¬ ´©Ãâ¿¡ ÀÖ¾î À¯ÀÇÇÑ Â÷ÀÌ°¡ ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù.(P<0.05).




Intuitively, higher bond strengths should result in less leakage. However, the relationship between bond strengths and microleakage value is complex and not clearly understood.
The purpose of this : tudy was to evaluate the relationship between tensile bond strengths and microleakage values in the same restorations to understand the behavior of resin bonding to tooth structure.
One-hundred and twenty enamel or dentin specimens from freshly extracted bovine mandibular incisors were used. The specimen was treated with 32% phosphoric acid for 15 seconds and rinsed for 20 seconds, the teeth were divided into four groups by means of wet bonding technique or dry bonding. One-Step^(TM) adhesive were applied to the specimen. The specimens were immersed in 2% methylene blue solution for 7 days, and tensile bond strength and microleakage were measured. The results were as follows:
1. Significant negative correlation was found between bond strengths and microleakage values. Hence. higher bond strengths seem to be associated with lower microleakage, and vice versa (r=-0.50. p<0.05).
2. The Enamel/Wet group showed significantly higher bond strength than Enamel/Dry one, and Dentin/Wet group showed higher strength than Dentin/Dry one (p<0.05).
3. Microleakage was significantly less in wet bonding than in dry one at dentin (p<0.05), however there was no significant difference between wet and dry bonding at enamel (p>0.05).

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