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Effect of working time on the film thickness of dental resin cements

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ÀÌÀ¯½Â ( Yi Yu-Seung ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø
±è¼ºÈÆ ( Kim Sung-Hun ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Ã¶Çб³½Ç
ÀÌÀçºÀ ( Lee Jai-Bong ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Ã¶Çб³½Ç
ÇÑÁß¼® ( Han Jung-Suk ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Ã¶Çб³½Ç
¿©Àμº ( Yeo In-Seong ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Ã¶Çб³½Ç
ÇϽ·æ ( Ha Seung-Ryong ) - ¾ÆÁÖ´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡ÀÇÇаú
±èÈñ°æ ( Kim Hee-Kyung ) - Áß¾Óº¸Èƺ´¿ø Ä¡°úº´¿ø Ä¡°úº¸Ã¶°ú

Abstract

¸ñÀû: º» ¿¬±¸¿¡¼­´Â ÀÓ»ó¿¡¼­ »ç¿ëµÇ´Â ¸î °¡Áö ·¹Áø ½Ã¸àÆ®ÀÇ È¥ÇÕ ÈÄ ºÎÇϸ¦ °¡Çϱâ±îÁöÀÇ ½Ã°£¿¡ µû¸¥ ÇǸ·µµÀÇ º¯È­¸¦ ºñ±³ÇÏ°í, È¥ÇÕ ÈÄ ÀÛ¾÷ ½Ã°£°ú ·¹Áø ½Ã¸àÆ®ÀÇ ÇǸ·µµÀÇ °ü°è¸¦ ¾Ë¾Æ º¸°íÀÚ ÇÏ¿´´Ù.

Àç·á ¹× ¹æ¹ý: ³× Á¾·ùÀÇ ·¹Áø ½Ã¸àÆ®(Panavia F2.0, Clearfil SA Luting, Zirconite, RelyX U200)¸¦ Á¦Á¶»çÀÇ Áö½Ã´ë·Î È¥ÇÕÇÑ ÈÄ µÎ ÀåÀÇ Åõ¸íÇÑ Mylar matrix strip »çÀÌ¿¡ ¼Ò·®ÀÇ ½Ã¸àÆ®¸¦ ³Ö°í ´Ù¾çÇÑ ½Ã°£ °£°Ý(20, 40, 60, 80, 100, 120, 140, 160, 180, 200ÃÊ) ÈÄ¿¡ 50 NÀÇ ºÎÇϸ¦ °¡ÇÏ°í ±¤ÁßÇÕÀ» ½ÃÇàÇÏ¿´´Ù. °¢ ½ÃÁ¡¿¡¼­ÀÇ ÇǸ·µµ´Â 1 §­ ´ÜÀ§±îÁö ÃøÁ¤ °¡´ÉÇÑ µðÁöÅÐ ÇǸ·µµ ÃøÁ¤±â¸¦ ÀÌ¿ëÇÏ¿© °¢ ½ÃÆí ´ç ¼¼ ¹ø¾¿ ÃøÁ¤ÇÏ¿© Æò±Õ°ªÀ» ±¸ÇÏ¿´À¸¸ç, ¼±Çüȸ±ÍºÐ¼®À» ÅëÇÏ¿© ½Ã°£¿¡ µû¸¥ ÃøÁ¤°ªÀÇ º¯È­¸¦ ¾Ë¾Æ º¸¾Ò´Ù. ¶ÇÇÑ Wilcoxon °ËÁ¤À» »ç¿ëÇÏ¿© °¢ ÃøÁ¤°ª°ú Á¦Á¶»ç¿¡¼­ Á¦½ÃÇÑ ÀÛ¾÷ ½Ã°£À» À¯ÀǼöÁØ 0.05·Î ºñ±³ ºÐ¼®ÇÏ¿´´Ù (¥á=.05).

°á°ú: º» ¿¬±¸¿¡ »ç¿ëµÈ ¸ðµç ·¹Áø ½Ã¸àÆ®¿¡¼­ È¥ÇÕ ÈÄ ºÎÇϸ¦ °¡Çϱâ±îÁö °É¸° ½Ã°£°ú ÇǸ·µµ´Â ¼±Çüȸ±ÍºÐ¼® °á°ú ¾çÀÇ »ó°ü°ü°è¸¦ °®´Â ÀÏÂ÷ÇÔ¼öÀû ÆÐÅÏÀ» º¸¿´´Ù. ISO±âÁØ¿¡ µû¶ó ÇǸ·µµ°¡ 50 §­°¡ µÇ´Â ½ÃÁ¡±îÁöÀÇ ½Ã°£Àº °¢ ·¹Áø ½Ã¸àÆ®ÀÇ Á¦Á¶»ç°¡ Á¦½ÃÇÑ ÀÛ¾÷ ½Ã°£°ú Â÷ÀÌ°¡ ÀÖ¾úÀ¸³ª Åë°èÀûÀÎ À¯ÀǼºÀº ¾ø¾ú´Ù.

°á·Ð: ·¹Áø ½Ã¸àÆ®ÀÇ ÇǸ·µµ´Â ÀÛ¾÷ ½Ã°£ÀÇ Áõ°¡¿¡ µû¶ó Áõ°¡ÇÑ´Ù. ÀÓ»ó¿¡¼­ÀÇ ·¹Áø ½Ã¸àÆ®ÀÇ ÀÛ¾÷ ½Ã°£Àº Á¦Á¶»ç¿¡¼­ Á¦½ÃÇÑ ÀÛ¾÷ ½Ã°£°ú Â÷ÀÌ°¡ ÀÖÀ» ¼ö ÀÖ´Ù.

Purpose: The aim of this study was to compare the film thicknesses of several resin cements as a function of time after mixing and to examine the effect of working time on the film thicknesses.

Materials and methods: The film thickness (§­) of 4 resin cements (n=10), 1 composite resin (Panavia F 2.0), 3 self-adhesive resin (Clearfil SA luting, Zirconite, RelyX U200) cements was measured at 20-second intervals after mixing of the cements up to 200 seconds under a load of 50 N. Linear regression was fitted to verify the effect of working time on the film thickness of each cement. Data were compared to the working time recommended by manufacturers using Wilcoxon test (¥á=.05).

Results: All of the materials showed a positive linear correlation between the film thickness and working time. There was no statistically significant difference between the working time based on our results and the values recommended by the manufacturers even though there was a discrepancy between those two values.

Conclusion: The film thickness of resin cements could increase with the increase of working time. Working time to meet the ISO standard of 50-§­ maximum film thickness could be different from the manufacturer¡¯s recommended value.

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Resin cements; Film thickness; Working time

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