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Tooth color changes associated with the bracket bonding and debonding

Korean Journal of Orthodontics 2006³â 36±Ç 2È£ p.114 ~ 124
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Abstract

º» ¿¬±¸´Â ±³Á¤¿ë ºê¶óÄÏ ºÎÂøÀ» À§ÇÑ ·¹Áø Á¢ÂøºÎÀ§ ¹× ±× ÀÎÁ¢ºÎÀ§ Áï, primer¸¸ µµÆ÷µÈ ºÎÀ§ÀÇ »öº¯È­¸¦ ¾Ë¾Æº¸±â À§ÇÏ¿© ½ÃÇàµÇ¾ú´Ù. ±³Á¤Ä¡·á¸¦ À§ÇØ ¹ßÄ¡µÈ 60°³ÀÇ °ÇÀüÇÑ ¼Ò±¸Ä¡¸¦ Àç·á·Î »ç¿ëÇÏ¿© ºÐ±¤ÃøÁ¤±â·Î »öÀ» ÃøÁ¤ÇÑ ÈÄ CIE L*a*b* »öÇ¥°è·Î ±â·ÏÇÏ¿´´Ù. 20°³ÀÇ ¼Ò±¸Ä¡¿¡ ±¤ÁßÇÕÇü Á¢Âø·¹ÁøÀ¸·Î ºê¶óÄÏÀ» ºÎÂøÇÑ ÈÄ ºÎÂø Àü°ú Á¦°Å ÈÄÀÇ »öÀ» ÃøÁ¤ÇÏ¿´À¸¸ç ´Ù¸¥ 20°³ÀÇ ¼Ò±¸Ä¡¿¡´Â primer¸¸ µµÆ÷ÇÏ°í µµÆ÷ Àü°ú µµÆ÷ ÈÄÀÇ »öÀ» ÃøÁ¤ÇÑ ÈÄ, L* °ªÀ» ÀÌ¿ëÇÏ¿© ¸í¾Ï º¯È­¸¦ »ìÆ캻 °á°ú ºê¶óÄÏ ºÎÂø ¹× primer µµÆ÷ ¸ðµÎÀÇ °æ¿ì ¸íµµ°¡ °¨¼ÒÇÏ´Â °æÇâÀ» º¸¿´À¸¸ç, a* °ª°ú b* °ªÀ» ÀÌ¿ëÇÏ¿© »ö»ó º¯È­¸¦ »ìÆ캻 °á°ú Ȳ»öÀÌ Áõ°¡ÇÏ´Â ¾ç»óÀ» ³ªÅ¸³»¾ú´Ù. ¶ÇÇÑ ÃøÁ¤µÈ L*a*b* °ªÀ» ÀÌ¿ëÇÏ¿© »öº¯È­¸¦ »êÃâÇÏ°í ÀÓ»óÀûÀ¸·Î ÀÎÁöÇÒ ¼ö ÀÖ´Â »öº¯È­ °ª 3.7À» ±âÁØÄ¡·Î ÇÏ¿© ºñ±³ ¹× ºÐ¼®À» ½ÃÇàÇÑ °á°ú ºê¶óÄÏ ºÎÂø Àü°ú Á¦°Å ÈÄÀÇ »öº¯È­´Â ±âÁØÄ¡º¸´Ù Å« °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç primer µµÆ÷¿¡ µû¸¥ »öº¯È­´Â ±âÁØÄ¡º¸´Ù Å©Áö ¾ÊÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÇÑÆí primer¸¸ µµÆ÷ÇÑ °æ¿ì Ä©¼ÖÁú¿¡ µû¸¥ »öº¯È­¸¦ ¾Ë¾Æº¸°íÀÚ ³ª¸ÓÁö 20°³ÀÇ ¼Ò±¸Ä¡¸¦ ´ëÁ¶·Î ÇÏ¿© Ä©¼ÖÁúÀ» ½ÃÇàÇÑ °á°ú Ä©¼ÖÁú ½ÃÇà ÈÄ »öº¯È­´Â ±âÁØÄ¡º¸´Ù Å« °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ºê¶óÄÏ Á¦°Å ÈÄ ÀÚ¿¬±¤ ³ëÃâÀÇ ¿µÇâÀ» ¾Ë¾Æº¸±â À§ÇÏ¿© ¸ðµç °æ¿ì¿¡ Ãß°¡ÀûÀ¸·Î photoagingÀ» ½ÃÇàÇÑ °á°ú ºÎ±âÀûÀÎ »öº¯È­´Â ±âÁØÄ¡º¸´Ù ÀÛÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÀÌ»óÀÇ °á°ú´Â ±³Á¤Ä¡·á¸¦ À§ÇÑ ºê¶óÄÏ ºÎÂøÀ¸·Î ÀÎÇØ ºê¶óÄÏ ºÎÂø ¹× ÀÎÁ¢ºÎÀ§ÀÇ Ä¡¾Æ»ö º¯È­°¡ ÀÖÀ½À» ÀǹÌÇϸç ÀÓ»ó°úÁ¤¿¡¼­ ÀÌ¿¡ ´ëÇÑ °í·Á°¡ ÇÊ¿äÇÔÀ» ½Ã»çÇÏ¿´´Ù.

The purpose of this study was to evaluate the tooth color changes of resin bonding sites and their adjacent sites on orthodontic bracket bonding. Sixty extracted sound premolars were used and the tooth color was recorded according to the CIE L*a*b* color system using a spectrophotometer. The tooth colors of the twenty premolars were measured and compared before bracket bonding and after removal. On a further twenty premolars, the tooth color was measured before and after only primer application. In the change of L* values, according to the bracket bonding and primer application, the lightness was decreased, and in the change of a* and b* values, the color was changed into a more yellowish color. The color differences (¥ÄE*) were calculated from the L*a*b* values and compared with the standard value of clinical detection (¥ÄE*=3.7). The color differences between before the bracket bonding and after removal noted exceeded the standard value and those of between before and after the primer application were not larger than the standard value. Tooth brushing was performed after application of the primer to evaluate the color changes according to the primer abrasion. As a control, toothbrushing was performed on the last twenty premolars. The color differences noted were larger than the standard value after toothbrushing. Also, to evaluate the color changes of the tooth which is exposed to sun irradiation after bracket removal, additional photoaging was performed and the color was measured for all teeth. The additional color differences after photoaging were smaller than the standard value. The above results suggest that the tooth color changes after fixed orthodontic treatment.

Å°¿öµå

Ä¡¾Æ»ö º¯È­;±¤ÁßÇÕÇü Á¢Âø·¹Áø;ºê¶óÄÏ ºÎÂø;Tooth color change;Light cure resin;Bracket bonding

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