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Effects of plasma arc curing lights on the surface hardness of the composite resins

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À̼ö¿ø ( Lee Soo-Won ) - Àü³²´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç&Ä¡ÀÇÇבּ¸¼Ò
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±è¼±¹Ì ( Kim Seon-Mi ) - Àü³²´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç&Ä¡ÀÇÇבּ¸¼Ò
ÃÖ³²±â ( Choi Nam-Ki ) - Àü³²´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç&Ä¡ÀÇÇבּ¸¼Ò

Abstract

±âÁ¸¿¡ »ç¿ëÇÏ°í ÀÖ´Â ÇÒ·Î°Õ ±¤ÁßÇÕ±â´Â ¿©·¯ °¡Áö ÀåÁ¡¿¡µµ ºÒ±¸ÇÏ°í ÁßÇսð£ÀÌ ¿À·¡ °É¸°´Ù´Â ¹®Á¦ ¶§¹®¿¡ ½Ã¼ú½Ã°£ÀÌ ±æ¾îÁö´Â ´ÜÁ¡ÀÌ Àִµ¥, ÃÖ±Ù¿¡ °³¹ßµÈ ÇöóÁ ±¤ÁßÇÕ±â´Â ¸Å¿ì ªÀº ½Ã°£¿¡ ÁßÇÕ½Ãų ¼ö ÀÖ´Ù°í Á¦Á¶È¸»ç´Â ÁÖÀåÇÏ°í ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ÀÓ»ó¿¡¼­ ÈçÈ÷ »ó¿ëÇÏ°í ÀÖ´Â º¹ÇÕ ·¹ÁøÀ» ±¤ÁßÇÕ ÇÒ ¶§, ÇÒ·Î°Õ ±¤ÁßÇÕÀ¸·Î ¾òÀ» ¼ö ÀÖ´Â ÇöóÁ ±¤ÁßÇÕ±âÀÇ ÀûÀýÇÑ ÁßÇսð£À» ¾Ë¾Æº¸°íÀÚ ÇÑ´Ù. 2mm µÎ²²ÀÇ ·¹Áø »ùÇÃÀ» ¸¸µé¾î ±¤ÁßÇÕ ÇÏ°í 24 ½Ã°£ ÈÄ »ó, ÇϸéÀÇ ¹Ì¼¼°æµµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. point 4 {(R)}¿¡¼­´Â ÇöóÁ ±¤ÁßÇÕ±â·Î 6ÃÊ°£ ÁßÇÕÇßÀ» ¶§ Çҷΰհú À¯»çÇÑ °æµµ¸¦ ¾ò¾úÁö¸¸, Z250 {(R)}¿¡¼­´Â Flipo {(R)}¸¸ 9ÃÊ°£ ÁßÇսà Çҷΰհú À¯»çÇÑ ±¤ÁßÇÕÀ» ³ªÅ¸³Â´Ù. À̹ø ¿¬±¸¿¡¼­ »ç¿ëÇÑ ÇöóÁ ±¤ÁßÇÕ±â´Â Àû¾îµµ 6ÃÊ È¤Àº 9ÃÊÁ¤µµ ±¤ÁßÇÕ ÇßÀ» ¶§ Çҷΰհú À¯»çÇÑ ÁßÇÕÀ» ¾òÀ» ¼ö ÀÖ´Ù´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.

In recent years, xenon plasma arc lamp was introduced for high-intensity curing of composite filling materials in direct resin restorations. In this study, two types of restorative materials, namely composites point 4 {(R)} and Z250 {(R)} were selected and curing was conducted using a conventional halogen light and two plama curing lights. Two different resin composites were cured using the different units(Flipo {(R)}, Ultra-lite 180A, and TriLight {(R)}) and tested for microhardness.
The purpose of this study was to test the hypothesis that exposure to a plasma curing lamp for 3, 6. 9 seconds is equivalent to 20 or 40 seconds of irradiation using a conventional halogen curing unit.
1. Flipo {(R)} and Ultra-lite 180A were able to polymerize point 4 {(R)} at 6 seconds to a degree equal to that of the TriLight {(R)}(control) at 40 seconds.
2. Flipo {(R)} was able to polymerize Z250 {(R)} at 9 seconds to a degree equal to that of the TriLight^{(R)}(control) on the bottom surface at 20 seconds. whereas Ultra-lite 180A could not do.
3. Two plasma curing units were able to cure the test-composites with bottom/top ratios approximately 61% to 96% at 3 to 9 seconds. There were some differences between the two composite brands, with Z250 {(R)} displaying less difference between top and bottom hardness values. For point 4 {(R)} and Z250 {(R)}, at least 6 or 9 seconds were necessary to produce microhardness equivalent to that of the TriLight {(R)} curing at 20 or 40 seconds.

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Plasma curing lights;Composite resins;Microhardness

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