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Physical properties of novel composite using Portland cement for retro-filling material

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ÀÌ»óÁø ( Lee Sang-Jin ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç
Á¶¿ÁÀΠ( Cho Ok-In ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç
¿°Áö¿Ï ( Yum Ji-Wan ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç
¹ÚÁ¤±æ ( Park Jeong-Kil ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç
Ç㺹 ( Hur Bock ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç
±èÇöö ( Kim Hyeon-Cheol ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç

Abstract

¿¬±¸¸ñÀû: ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº »õ·Î¿î ±Ù´Ü ¿ªÃæÀü Àç·á¸¦ °³¹ßÇϱâ À§ÇØ MTA, MTA¿Í AH-plus È¥ÇÕ¹° (AMTA), ±×¸®°í ½ÇÇèÀû °³¹ßÀç·áÀÎ Portland cement-Epoxy resin composite (EPPC)ÀÇ ¹Ì¼¼ ´©Ãâ ¹× ¹°¸®ÀûÀÎ ¼ºÁúÀ» ºñ±³ÇÏ´Â °ÍÀÌ´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: ¹ß°Å Ä¡¾Æ 49°³¸¦ ±Ù°ü ¼ºÇüÇÏ°í gutta-percha¿Í sealer·Î ÃæÀüÇÏ¿´´Ù. °¢ Ä¡¾ÆÀÇ Ä¡±ÙÀ» ±Ù´ÜºÎ 3 mm¿¡¼­ Àý´ÜÇÏ°í 3 mm ±íÀÌÀÇ ¿ªÃæÀü ¿Íµ¿À» Çü¼ºÇÏ¿´´Ù. 15°³¾¿ ¹«ÀÛÀ§·Î ºÐ·ùÇÑ Ä¡±ÙÀ» ¼¼ ±ºÀ¸·Î ³ª´©¾î °¢°¢ MTA, AMTA, EPPC·Î ÃæÀüÇÏ¿´°í ³× °³ÀÇ Ä¡±ÙÀº ´ëÁ¶±ºÀ¸·Î »ç¿ëÇÏ¿´´Ù. °¢ ±ºÀÇ Àç·á·Î ¿ªÃæÀüÀÌ ¿Ï·áµÈ ¸ðµç ½ÇÇ豺À» Á¥Àº°ÅÁî·Î µ¤°í 24½Ã°£ µ¿¾È °æÈ­½ÃÄ×´Ù. °æÈ­ ÈÄ 72½Ã°£ µ¿¾È 1% methylene blue ¿°»ö¾×¿¡ ´ã±Ù ÈÄ, Ä¡±Ù´ÜÀ» ¼öÁ÷ Àý´ÜÇÏ¿© »çÁøÀ» ÃÔ¿µÇÏ°í ¹Ì¼¼ ´©ÃâÀ» Æò°¡ÇÏ¿´´Ù. Vicat apparatus¸¦ »ç¿ëÇÏ¿© ½ÇÇ豺 º°·Î °æÈ­½Ã°£À» ÃøÁ¤ÇÏ¿´À¸¸ç, aluminum step wedge¸¦ »ç¿ëÇÑ µðÁöÅÐ ¹æ»ç¼± »çÁøÀ» ÃÔ¿µÇÏ¿© °¢ ±ºÀÇ ¹æ»ç¼± ºÒÅõ°úµµ¸¦ Æò°¡ÇÏ¿´´Ù. ¹Ì¼¼´©Ãâ°ú °æÈ­½Ã°£¿¡ ´ëÇØ °¢ ±º°£ÀÇ Â÷À̸¦ ÀÏ¿ø¹èÄ¡ºÐ»êºÐ¼® ¹× Scheffe »çÈÄ °ËÁõÀ¸·Î À¯ÀǼöÁØ 95%¿¡¼­ Æò°¡ÇÏ¿´´Ù.

°á°ú: AMTA¿Í EPPC´Â MTA±º¿¡ ºñÇØ ÀûÀº ¹Ì¼¼´©Ãâ·®À» º¸¿´´Ù (p < 0.05). AMTA´Â °¡Àå ³ôÀº ¹æ»ç¼± ºÒÅõ°úµµ¸¦ º¸¿´À¸¸ç °³¹ß Àç·áÀÎ EPPC±ºÀº 5 mm aluminum µÎ²²ÀÇ ¹æ»ç¼± ºÒÅõ°úµµ¸¦ º¸¿´´Ù. MTA°¡ °¡Àå ±ä °æÈ­½Ã°£À» ³ªÅ¸³½¹Ý¸é EPPC±ºÀº ´Ù¸¥ ±º¿¡ ºñÇØ Ãʱâ°æÈ­¿Í ÃÖÁ¾°æÈ­ ¸ðµÎ °¡Àå ªÀº °æÈ­½Ã°£À» ³ªÅ¸³Â´Ù (p < 0.05).

°á·Ð: ÀÌ ¿¬±¸ Á¶°ÇÇÏ¿¡¼­, ½Å°³¹ß Àç·áÀÎ EPPC´Â Ä¡±Ù´Ü ¿ªÃæÀü Àç·á·Î¼­ ±âÁ¸ÀÇ MTAº¸´Ù ¾çÈ£ÇÑ ¹ÐÆó´É·Â°ú ¹æ»ç¼± ºÒÅõ°ú¼º ¹× ªÀº °æÈ­½Ã°£ µîÀÇ ¿ªÃæÀü Àç·á·Î¼­ ÀûÀýÇÑ ¹°¸®Àû ¼ºÁúÀ» °¡Áø °ÍÀ¸·Î º¸ÀδÙ.

Objectives: The aim of this study was to compare apical sealing ability and physical properties of MTA, MTA - AH-plus mixture (AMTA) and experimental Portland cement - Epoxy resin mixture (EPPC) for a development of a novel retro-filling material.

Materials and Methods : Forty-nine extracted roots were instrumented and filled with gutta-percha. Apical root was resected at 3 mm and the retro-filling cavity was prepared for 3 mm depth. Roots were randomly divided into 3 groups of 15 roots each. The retro-filling was done using MTA, AMTA, and EPPC as the groups divided. Four roots were used as control groups. After setting in humid condition for 24 hours, the roots were immersed in 1% methylene blue dye solution for 72 hours to test the apical leakage. After immersion, the roots were vertically sectioned and photos were taken to evaluate microleakage. Setting times were measured with Vicat apparatus and digital radiographs were taken to evaluate aluminum equivalent thickness using aluminum step wedge. The results of microleakage and setting time were compared between groups using one-way ANOVA and Scheffe¡¯s post-hoc comparison at the significance level of 95%.

Results: AMTA and EPPC showed less microleakage than MTA group (p < 0.05). AMTA showed the highest radio-opacity than other groups and the novel EPPC showed 5 mm aluminum thickness radio-opacity. EPPC showed the shortest initial and final setting times than other groups while the MTA showed the longest (p < 0.05).

Conclusions: Under the condition of this study, the novel composite using Portland cement-Epoxy resin mixture may useful for retro-filling with the properties of favorable leakage resistance, radio-opacity and short setting time.

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Epoxy resin; MTA; Portland cement; Radio-opacity; Retro-filling; Setting time

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