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EFFECT OF THE BLEACHING LIGHT ON WHITENING EFFICACY

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¹ÚÁ¾Çö, ½ÅÇýÁø, ¹Ú´ö¿µ, ¹Ú¼¼Èñ, ±èÁø¿ì, Á¶°æ¸ð,
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¹ÚÁ¾Çö ( Park Jong-Hyun ) - °­¸ª´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç
½ÅÇýÁø ( Shin Hye-Jin ) - ¾ÆÁÖ´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡°úÇб³½Ç
¹Ú´ö¿µ ( Park Deok-Young ) - °­¸ª´ëÇб³ Ä¡°ú´ëÇÐ ¿¹¹æÄ¡Çб³½Ç
¹Ú¼¼Èñ ( Park Se-Hee ) - °­¸ª´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç
±èÁø¿ì ( Kim Jin-Woo ) - °­¸ª´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç
Á¶°æ¸ð ( Cho Kyung-Mo ) - °­¸ª´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç

Abstract

ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº ¹Ì¹éÁ¦ÀÇ Ä¡¾Æ¹Ì¹éÈ¿°ú¿¡ ¹Ì¹éº¸Á¶±¤ÀÇ ºû¿¡³ÊÁöÀÇ ¿µÇâÀ» Æò°¡ÇÏ´Â °ÍÀÌ´Ù. ¹ß°ÅµÈ ÇÏ¾Ç ´ë±¸Ä¡ Ä¡°üÀÇ ¼³¸éÀ» ½ÇÇè¿¡ »ç¿ëÇÏ¿´°í, ÇϳªÀÇ ´ë±¸Ä¡¿¡¼­ ±Ù½É°ú ¿ø½ÉÀ¸·Î ±¸ºÐµÇ´Â 2°³ÀÇ Ä¡¾ÆÀýÆíÀ» ¾ò¾ú´Ù. ¸ðµç ½ÃÆíÀ» 24½Ã°£µ¿¾È ÀûÆ÷µµÁÖ¿¡ º¸°üÇÏ¿© Âø»öÀ» À¯µµÇÏ°í, ÀΰøŸ¾×¿¡ º¸°üÇÏ¿´´Ù. ½ÃÆíµéÀº ¹Ì¹é±¤Á¶»ç±â¿Í ¹Ì¹é powderÀÇ Á¾·ù¿¡ µû¶ó 4°³ÀÇ ½ÇÇ豺À¸·Î ³ª´µ¾úÀ¸¸ç, ½ÇÇ豺Àº ´ÙÀ½°ú °°´Ù. Group 1 : LumaCool·Î ±¤Á¶»ç¸¦ ½ÃÇà, LumaWhite¸¦ »ç¿ë Group 2: LumaCool·Î ±¤Á¶»ç¸¦ ½ÃÇà, Polaoffice¸¦ »ç¿ë Group 3: FlipoWhite 2·Î ±¤Á¶»ç¸¦ ½ÃÇà LumaWhite¸¦ »ç¿ë Group 4: FlipoWhite 2·Î ±¤Á¶»ç¸¦ ½ÃÇà, Polaoffce¸¦ »ç¿ë ¹Ì¹éóġ´Â 10ºÐ°£ ¸Å 24½Ã°£¸¶´Ù ÃÑ 6ȸ ½ÃÇàÇÏ¿´°í, ¹Ì¹éóġ½Ã µ¿ÀÏÇÑ Ä¡¾Æ¿¡¼­ ¾ò¾îÁø µÎ °³ÀÇ ½ÃÆí Áß ¿ø½É½ÃÆí¿¡´Â ¹Ì¹é±¤Á¶»ç¸¦ ½ÃÇàÇÑ ¹Ý¸é, ±Ù½É½ÃÆí¿¡´Â ¹Ì¹é±¤Á¶»ç¸¦ ½ÃÇàÇÏÁö ¾Ê¾Ò´Ù. »öÁ¶ÀÇ Æò°¡´Â spectrophotometer¸¦ »ç¿ëÇÏ¿© ¸Å ¹Ì¹éóÁö Àü°ú ÈÄ¿¡ ½ÃÇàÇÏ¿´°í, ±Ù½ÉÃø°ú ¿ø½ÉÃø¿¡¼­ ¾ò¾îÁø »öÁ¶ º¯È­ Â÷À̸¦ paired-sample T test¸¦ ÀÌ¿ëÇÏ¿© 95%ÀÇ ½Å·Ú¼öÁØÀ¸·Î ºñ±³ÇÏ¿´´Ù. ¹Ì¹éóġ ÈÄ ¸ðµç ½ÇÇ豺¿¡¼­ L* value¿Í ¡âEÀÇ Áõ°¡¿Í a* value¿Í b* valueÀÇ °¨¼Ò°¡ °üÂûµÇ¾ú´Ù. Group 2¿ø½É ÀýÆíÀÇ a* value¿Í group 3¿ø½ÉÀýÆíÀÇ b* value¿¡¼­ÀÇ ´õ Å« º¯È­¿Í group 4ÀÇ ¿ø½ÉÀýÆí¿¡¼­ÀÇ a* value°¡ Á» ´õ ÀûÀº º¯È­¸¦ Á¦¿ÜÇÏ°í, ¸ðµç ½ÇÇ豺¿¡¼­ ±Ù½ÉÀýÆí°ú ¿ø½ÉÀýÆí»çÀÌ¿¡¼­ »öÁ¶º¯È­ÀÇ Â÷ÀÌ´Â Åë°èÀû À¯ÀǼºÀ» º¸ÀÌÁö ¾Ê¾Ò´Ù. ÀÌ»óÀÇ ¿¬±¸ °á°ú¿¡¼­ ¹Ì¹éº¸Á¶±¤ÀÇ ºû¿¡³ÊÁö´Â ¹Ì¹éÁ¦ÀÇ Ä¡¾Æ¹Ì¹é È¿°ú¸¦ Áõ°¡½ÃÅ°´Â °Í¿¡ ¸í¹éÇÑ ¿µÇâÀ» ÁÖÁö ¾Ê´Â °ÍÀ¸·Î Æò°¡µÇ¾ú´Ù.

The aim of this study was to evaluate the influence of light energy on the tooth whitening effect of bleaching agent in vitro..Extracted human mandibular molars were sectioned to 2 fragments(mesial. distal) and lingual portions of crown were used in this study. All specimens were stained using a red wine for 24 hours and immersed in artificial saliva. Specimens divided into four groups, group 1 and 2 light-activated by LumaCool (LED, LumaLite, Inc., Spring Valley, USA), group 3 and 4 light-activated by FlipoWhite2 (Plasma acr lamp, Lokki. Australia). Group 1 and 3 bleached with Luma White (LumaLite, Inc., Spring Valley, USA), group 2 and 4 bleached with Polaoffice(SDI, Victoria, Australia). Bleaching treatment performed during 10 minutes every 24 hours and repeated 6 times. During bleaching treatment, distal fragments was light-activated (L) but mesial fragments was not(NL). Shade assessment employed before and after bleaching treatment using spectrophotometer. The results of the change in shade was compared and analysed between NL and L by using paired-sample T test with 95 % level of confidence. There were no significant differences between NL and L with a few exceptions. In group 2, a* value more change in L, in group 3, b* value more change in L, in group 4, a* value less change in L. After bleaching, L* value and ¡âE increased in all groups and the value of a* and b* decreased in all groups. Within the limitation of this test conditions, the results of this study indicate that the light energy has no obvious improving impact on the tooth whitening effect of a bleaching agent.

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Tooth whitening;Bleaching light;Hydrogen peroxide;Spectrophotometer

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