Àá½Ã¸¸ ±â´Ù·Á ÁÖ¼¼¿ä. ·ÎµùÁßÀÔ´Ï´Ù.

Double curing unit systemÀ» ÀÌ¿ëÇÑ º¹ÇÕ ·¹ÁøÀÇ ±¤ÁßÇÕ ¼öÃà¿¡ °üÇÑ ¿¬±¸

POLYMERIZATION SHRINKAGE OF COMPOSITE RESIN USING DOUBLE CURING UNIT SYSTEM

´ëÇѼҾÆÄ¡°úÇÐȸÁö 2009³â 36±Ç 2È£ p.189 ~ 198
Çѹ̶õ, À¯½ÂÈÆ, ±èÁ¾¼ö,
¼Ò¼Ó »ó¼¼Á¤º¸
Çѹ̶õ ( Han Mi-Ran ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
À¯½ÂÈÆ ( Yoo Seung-Hoon ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÁ¾¼ö ( Kim Jong-Soo ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

º» ¿¬±¸´Â º¹ÇÕ ·¹ÁøÀÌ ±¤¿øÀ» ÇâÇØ ¼öÃàÀÌ ÀϾ´Ù´Â Á¡¿¡ Âø¾ÈÇÏ¿© ÁßÇÕ ¼öÃà½Ã ÇÊ¿¬ÀûÀ¸·Î ¹ß»ýµÇ´Â Ä¡Áú°úÀÇ °áÇÕ´ÜÀýÀ» °³¼±ÇÏ°íÀÚ double light emitting diode(LED) systemÀ» °í¾ÈÇÏ¿´À¸¸ç, ÁßÇÕ ¼öÃà ½Ã ¹ß»ýÇÏ´Â ½ºÆ®·¹ÀÎÀÇ º¯È­¸¦ ±â·ÏÇÏ°í ¹Ì¼¼ ´©ÃâÀÇ ¾ç»óÀ» °üÂûÇÏ¿© ºñ±³ ºÐ¼®ÇÑ °á°ú ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù. 1. ½ºÆ®·¹ÀÎÀÇ º¯È­¸¦ »ìÆ캸¸é, single LED system°ú double LED system¿¡¼­ ±¤ÁßÇÕ °³½Ã¿Í ÇÔ²² ±Þ°ÝÈ÷ Áõ°¡ÇÏ¿´´Ù°¡ ½Ã°£ÀÌ Áö³²¿¡ µû¶ó ¼­¼­È÷ °¨¼ÒÇÏ´Â À¯»çÇÑ ¼öÃà ÀÀ·Â ¾ç»óÀ» º¸¿´´Ù. 2. ÃÖ´ë ÀÀ·ÂÀÇ ¹ß»ý°ú À¯Áö´Â double LED systemº¸´Ù single LED system¿¡¼­ ´õ ³ô°Ô ³ªÅ¸³µ´Ù(p<0.05). 3. Double LED systemÀÌ single LED systemº¸´Ù ¹Ì¼¼ ´©ÃâÀÌ ´õ ³·°Ô ³ªÅ¸³µ´Ù(p<0.05). ÀÌ»óÀÇ °á°ú¸¦ Á¾ÇÕÇغ¸¸é, single LED system¿¡ ºñÇØ double LED system¿¡¼­ ÁßÇÕ ¼öÃà ÀÀ·ÂÀÌ Å©Áö ¾Ê°í ¹Ì¼¼ ´©Ãâµµ ÁÙÀÏ ¼ö ÀÖ¾î ÀÓ»ó¿¡¼­ ¸Å¿ì À¯¿ëÇÑ Àåºñ·Î »ç¿ëµÉ ¼ö ÀÖÀ¸¸®¶ó »ý°¢µÈ´Ù. ±×·¯³ª µÎ °³ÀÇ ±¤¿øÀÌ ±¸°­³»¿¡¼­ ¿øÈ°ÇÏ°Ô ¿òÁ÷À̱â À§Çؼ­´Â ±¤¿øÀÇ Å©±â°¡ ÃæºÐÈ÷ ÀÛ¾Æ¾ß ÇÑ´Ù. ÇöÀç °³¹ßµÈ LED´Â ±¤·®ÀÌ ÃæºÐÇÏÁö ¾Ê¾Æ ½Ã¼ú ½Ã°£ÀÇ ´ÜÃàÀ» ¿øÇÏ´Â ¼Ò¾Æ ȯÀÚÀÇ Á¢Âø ¼öº¹¿¡¼­´Â ¾î·Á¿î ½ÇÁ¤ÀÌ´Ù. µû¶ó¼­ ¼öº¹¹°ÀÇ ¿ÏÀüÇÑ ÁßÇÕ°ú ÁßÇÕ ½Ã°£ÀÇ °¨¼Ò¸¦ À§ÇØ ´õ ³ôÀº Ãâ·ÂÀÇ ±¤¿øÀÌ ÇÊ¿äÇÏ°í, ÀÌ´Â LED±¤¿øÀÇ ¹ß´Þ¿¡ ±â´ëÇØ º¼ ¼ö ÀÖÀ¸¸®¶ó »ç·áµÈ´Ù.

As a part of an effort to minimize the polymerization shrinkage which is considered to be a major cause of failed bonds to tooth, newly designed ¡¯Double LED system¡¯ was tested in the present study. Analyses were performed on the pattern of micro-leakage and the changes of strain which have occurred during the polymerization process. The results can be summarized as follows: 1. In the strain change, dramatic increase was observed with initiation of polymerization which was followed by subsequent gradual decrease with elapse of time in both the single LED system and double LED system. 2. The single LED system were shown to develop and maintain the maximum stress more than double LED system(p<0.05). 3. Less micro-leakage was found in the double LED system than in the single LED system(p<0.05). From the above-mentioned results, the double LED system can be a very useful tool in a sense of reducing polymerization shrinkage when compared to the single LED system. However, practical problems such as size of curing unit and its application method with its light intensity should be solved before its clinical application.

Å°¿öµå

º¹ÇÕ ·¹Áø;±¤ÁßÇÕ;ÁßÇÕ ¼öÃà;½ºÆ®·¹ÀÎ °ÔÀÌÁö
Composite resin;Light curing;Polymerization shrinkage;Strain gauge

¿ø¹® ¹× ¸µÅ©¾Æ¿ô Á¤º¸

 

µîÀçÀú³Î Á¤º¸

KCI