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A STUDY ON THE MODE OF POLYMERIZATION OF LIGHT-CURED RESTORATIVE MATERIALS CURED WITH THREE DIFFERENT LIGHT SOURCES

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Abstract

º» ¿¬±¸´Â ±âÁ¸ÀÇ Çҷΰձ¤(XL 3000, 3M, U.S.A.)°ú ºñ±³ÇÏ¿©, »õ·Î¿î ÁßÇÕ±¤¿øÀÎ ÇöóÁ±¤(Flipo. LOKKI, France)°ú Light Emitting Diode(ÀÌÇÏ LED, Elipar Free light, 3M, U.S.A.)±¤ÀÇ È¿À²¼ºÀ» Æò°¡ÇÒ ¸ñÀûÀ¸·Î ½ÃµµeµÇ¾ú´Ù. ÀÌ¿¡ º» ¿¬±¸¿¡¼­´Â ù°, ÀÏÁ¤ ±¤µµ ÇÏ¿¡¼­ ÇöóÁ±¤°ú LED±¤ÀÇ ÁßÇս𣿡 Æĸ¥ ÁßÇÕµµÀÇ º¯È­¸¦ °ËÅäÇÏ¿© Çҷΰձ¤ÀÇ ¹Ì¼¼°æµµ¿Í À¯»çÇÑ ±¤Á¶»ç Áö°£À» ¾Ë¾Æº¸°í, µÑ°, ÁßÇչݰ濡 µû¶ó ±ÕÀÏÇÑ ÁßÇÕÀÌ ÀÌ·ç¾îÁö´ÂÁö¸¦ º¸±â À§ÇØ ±¤Á¶»ç ºÎÀ§ÀÇ Áß½ÉºÎ¿Í ¿ÜÃø º¯¿¬ºÎ¿¡¼­ÀÇ ÁßÇÕµµÀÇ Â÷À̸¦ ºñ±³ÇÏ¿´´Ù. 2mm µÎ²²ÀÇ º¹ÇÕ·¹Áø ½ÃÆíÀÇ »ó¸é°ú ÇϸéÀÇ ¹Ì¼¼°æµµÀÇ ÃøÁ¤À» ÅëÇØ ÁßÇÕµµ¸¦ Æò°¡, ºñ±³ÇØ º» °á°ú ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. Z-100ÀÇ ¹Ì¼¼°æµµ ÃøÁ¤Ä¡ ºñ±³¿¡¼­, ´ëÁ¶±ºÀÎ Çҷΰձ¤À» 40ÃÊ Àû¿ëÇÑ °æ¿ì´Â, ÇöóÁ±¤ 6-9ÃÊ, LED±¤ 40-60Ãʸ¦ Àû¿ëÇÑ °æ¿ì¿Í À¯»çÇÏ¿´´Ù(P>0.05).
2. Tetric FlowÀÇ ¹Ì¼¼°æµµ¿¡¼­´Â ´ëÁ¶±ºÀÎ Çҷΰձ¤À» 40ÃÊ Àû¿ëÇÑ °æ¿ì, ÇöóÁ±¤ 6-9ÃÊ, LED±¤ 40-60Ãʸ¦ Àû¿ëÇÑ °æ¿ì¿Í À¯»çÇÏ¿´´Ù(P>O.05).
3. Dyract APÀÇ °æ¿ì, Çҷΰձ¤ 40Ãʸ¦ Á¶»çÇÑ °ÍÀº, ÇöóÁ±¤ 6-9ÃÊ, LED±¤ 20-40Ãʸ¦ Àû¿ëÇÑ °æ¿ì¿Í À¯»çÇÏ°Ô ³ªÅ¸³µ´Ù(P>0.05).
4. Fuji ¥± LC¿¡¼­´Â Çҷΰձ¤À» 40ÃÊ Àû¿ëÇÑ °æ¿ì°¡, ÇöóÁ±¤ 9ÃÊ, LED±¤ 20-60Ãʸ¦ Àû¿ëÇÑ °æ¿ì¿Í ¿î»çÇÏ°Ô ³ªÅ¸³µ´Ù(P>0.05).
5. Fuji ¥± LC¸¦ Á¦¿ÜÇÑ ¸ðµç ½Ã·á¿¡¼­ ÇҷΰÕ, ÇöóÁ, LED±¤ ¸ðµÎ ½ÃÆíÀÇ Áß¾Ó¿¡¼­ ¿ÜÃøÀ¸·Î °¥¼ö·Ï ¹Ì¼¼°æµµ´Â À¯ÀÇÇÏ°Ô °¨¼ÒµÇ¾ú´Ù(p<0.05).
The purpose of this study was to compare the effect of exposure time on the polymerization of surface and 2 mm below the surface of light cured restorative materials cured with three different light sources; conventional halogen light curing unit(XL 3000, 3M, U.S.A.). plasma arc light curing unit(Flipo, LOKKI. France) and light emitting diode(LED) light curing unit(Elipar Free light, 3M. U.S.A.) and compare the uniformity of polymerization from the center to the periphery of resin surfaces according to polymerization diameter cure with three different light sources.
From the experiment, the following results were obtained.
1. In Z-100, Plasma arc light exposure time of 6 to 9 seconds and LED light exposure time of 40 to 60 seconds produced microhardness values similar to those produced with 40 second exposure to a conventional halogen light(p)0.05).
2. In Tetric Flow, Plasma arc light exposure time of 9 seconds and LED light exposure time of 40 to 60 seconds produced microhardness values similar to those produced with 40 second exposure to a conventional halogen light(p)0.05).
3. In Dyract AP, Plasma arc light exposure time of 6 to 9 seconds and LED light exposure time of 20 to 40 seconds produced microhardness values similar to those produced with 40second exposure to a conventional halogen light(p)0.05).
4. In Fuji II LC. Plasma arc light exposure time of 9 seconds and LED light exposure time of 20 to 60 seconds produced microhardness values similar to those produced with 40second exposure to a conventional halogen light(p)0.05).
5. Except Fuji II LC. microhardness was decreased from the center to the periphery in all light sources (p<0.05).

Å°¿öµå

ÇҷΰÕ;ÇöóÁ;light emitting diode;ÁßÇսð£;ÁßÇչݰæ;Halogen;Plasma arc;Light emitting diode;Exposure time;Polymerization diameter

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