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HARDNESS OF COMPOSITE RESIN CURED BY HIGH INTENSITY HALOGEN LIGHT

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¹ÚÁ¾¼® ( Park Jong-Seok ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
À̱¤Èñ ( Lee Kwang-Hee ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±è´ë¾÷ ( Kim Dae-Eop ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±è¼ºÇü ( Kim Seong-Hyeong ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
¾ÈÈ£¿µ ( Ahn Ho-Young ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

º¹ÇÕ·¹ÁøÀÇ ±¤ÁßÇս𣠴ÜÃà°ú °ü·ÃÇÏ¿© ÃÖ±Ù¿¡ °³¹ßµÈ °í°­µµ Çҷΰձ¤ ÁßÇձ⸦ ±âÁ¸ÀÇ Áß°­µµ Çҷΰձ¤ ÁßÇÕ±â¿Í ºñ±³ Æò°¡Çϱâ À§ÇÏ¿©, ¼¼ Á¾·ùÀÇ ±¤ÁßÇÕ¿ë º¹ÇÕ·¹ÁøÀ» µÎ²²°¡ 2, 3, 4, 5mmÀÎ ½ºÅ×Àη¹½º ½ºÆ¿ ¸ôµå¿¡ ÃæÀüÇÏ°í, ·¹Áø »ó¸éÀ» Áß°­µµ Çҷΰձ¤Àº (1) À¸·Î 40ÃÊ°£ °í°­µµ Çҷΰձ¤Àº (2) 10Ãʵ¿¾È ºÎÅÍ ±îÁö Ãâ·Â·®ÀÌ Áõ°¡Çϸ鼭 ÁßÇÕÇÏ°í ´ÙÀ½ 10Ãʵ¿¾È ·Î ÁßÇÕÇÏ´Â ramp ¸ðµå·Î 20ÃÊ°£, (3) ÀÇ boost ¸ðµå·Î 10ÃÊ°£, (4) ÀÇ Ç¥ÁØ ¸ðµå·Î 20ÃÊ°£ Á¶»çÇÏ°í, »ó¸é°ú ÇϸéÀÇ Ç¥¸é°æµµ¸¦ ¹Ì¼¼°æµµÃøÁ¤±â·Î ÃøÁ¤ÇÑ ÈÄ ½ÇÇ豺°£ÀÇ Â÷À̸¦ ºÐ¼®ÇÏ¿´´Ù. ·¹Áø »ó¸éÀÇ °æµµ´Â ÁßÇÕ±¤ÀÇ °­µµ¿Í ÁßÇսð£ ¹× ·¹Áø µÎ²²¿¡ µû¸¥ Â÷ÀÌ°¡ ¾ø¾ú´Ù(À¯ÀǼöÁØ 0.05, ÀÌÇÏ µ¿ÀÏ). ·¹Áø ÇϸéÀÇ °æµµ´Â, µÎ²² 2mmÀÇ Áß°­µµ±º(1)À» Á¦¿ÜÇÏ°í, »ó¸éÀÇ °æµµº¸´Ù ³·¾Ò´Ù. ·¹Áø ÇϸéÀÇ °æµµ´Â µÎ²² 2mm¿¡¼­ Áß°­µµ±º(1)ÀÌ ramp±º(2) ¹× boost±º(3)º¸´Ù ³ô¾Ò°í Áß°­µµ±º(1)°ú Ç¥Áرº(4) °£ ¹× ramp±º(2)°ú boost ±º(3) °£¿¡ Â÷ÀÌ°¡ ¾ø¾úÀ¸¸ç, µÎ²² 3mm¿¡¼­ Áß°­µµ±º(1)ÀÌ °¡Àå ³ô¾Ò°í Ç¥Áرº(4)ÀÌ boost±º(3)º¸´Ù ³ô¾Ò´Ù. µû¶ó¼­, º¹ÇÕ·¹ÁøÀÇ ÁßÇÕ ±íÀÌ Ãø¸é¿¡¼­ º¼ ¶§, ÀÇ °í°­µµ Çҷΰձ¤À» 10ÃÊ°£ Á¶»çÇÑ °ÍÀº ÀÇ Áß°­µµ ÇÒ·Î°Õ ±¤À» 40ÃÊ°£ Á¶»çÇÑ °Í¿¡ ¹ÌÄ¡Áö ¸øÇÏ¿´À¸¸ç, ·¹Áø µÎ²² 2mmÀ̳»ÀÎ °æ¿ì¿¡´Â ÀÇ °í°­µµ Çҷΰձ¤À» 20ÃÊ°£ Á¶»çÇÔÀ¸·Î½á ÀÇ Áß°­µµ Çҷΰձ¤À» 40ÃÊ°£ Á¶»çÇÑ °Í°ú ´ëµîÇÑ ÁßÇÕÀ» ÀÏÀ¸Å³ ¼ö ÀÖ¾ú´Ù.

The purpose of this study was to compare the effect of the high intensity halogen light with that of the conventional halogen light on the hardness of composite resin. Three resin composites (Z-100, 3M, U.S.A. : Tetric Ceram, Vivadent, Liechtenstein; SureFil, Dentsply, U.S.A.) were filed in the stainless steel moulds which were 4mm in diameter and 2, 3, 4, and 5mm in depth, respectively. They were cured under the four different modes : (1) conventional mode, 40 seconds at ; (2) ¡¯ramp¡¯ mode, 10 seconds at 100 to plus 10 seconds at ; (3) ¡¯boost¡¯ mode, 10 seconds at ; and (4) ¡¯standard¡¯ mode, 20 seconds at . The surface hardnesses of the top and the bottom of the resin samples were measured with a microhardness tester (MXT70, Matsuzawa, Japan). The top surface hardness was not significantly different among the curing modes. The bottom surface hardness was generally the highest in the conventional mode and the lowest in the high intensity boost mode. There was no significant difference in the bottom surface hardness between the conventional mode and the high intensity standard mode in 2mm depth. The results suggest that the curing time of the high intensity halogen light should be at least 20 seconds to produce the equal level of the bottom surface hardness of 2mm resin composite as compared to the hardness produced by the conventional halogen light .

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Composite resin;Light-curing;Halogen light;High intensity;Conventional

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