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POLYMERIZATION SHRINKAGE, HYGROSCOPIC EXPANSION AND MICROLEAKAGE OF RESIN-BASED TEMPORARY FILLING MATERIALS
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Á¶³«¿¬ ( Cho Nak-Yeon ) - ¼¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Á¸Çб³½Ç
ÀÌÀκ¹ ( Lee In-Bog ) - ¼¿ï´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø
KMID : 0362320080330020115
Abstract
º» ¿¬±¸ÀÇ ¸ñÀûÀº ¼ö Á¾ÀÇ ·¹Áø°è Àӽüöº¹ÀçÀÇ ÁßÇÕ¼öÃà ¹× ¼öÈÆØâÀ» ÃøÁ¤ÇÏ°í ·¹Áø°è Àӽüöº¹Àç¿Í ¿Íµ¿¸é »çÀÌÀÇ ¹Ì¼¼´©ÃâÀ» Æò°¡ÇÏ°íÀÚ ÇÏ¿´´Ù. º» ½ÇÇèÀÇ Àç·á´Â 5Á¾ÀÇ ±¤ÁßÇÕÇü ·¹Áø°è ÀÓ½ÃÃæÀüÀç Fermit, Quicks, Provifil, Spacer, Clip¿Í ´ëÁ¶±ºÀ¸·Î ¼®°í°è ÃæÀüÀç CavitonÀ» »ç¿ëÇÏ¿´´Ù. ¡¯Bonded disc method¡¯¸¦ ÀÌ¿ëÇÏ¿© ÁßÇÕ¼öÃàÀ» ÃøÁ¤ÇÏ¿´°í, ¹Ì¸® ÁßÇÕµÈ µð½ºÅ© ÇüÅÂÀÇ ½ÃÆíÀ» »ý¸®½Ä¿°¼ö¿¡ ´ã±×°í LVDT·Î 7 ÀÏ µ¿¾È ¼öÈÆØâÀ» ±â·ÏÇÏ¿´´Ù. ¹ß°ÅµÈ 120°³ÀÇ »ó, ÇÏ¾Ç ´ë±¸Ä¡¿¡ 1 ±Þ ¿Íµ¿À» Çü¼ºÇÑ ÈÄ °¢°¢ 20°³¾¿ 6°³ÀÇ ±ºÀ¸·Î ³ª´©¾î °¢ Àç·á¸¦ ÃæÀüÇÑ ÈÄ, 1000 ȸÀÇ ThermocyclingÀ» ½Ç½ÃÇÏ°í 2% methylene blue ¿°»ö ¿ë¾×À» ÀÌ¿ëÇÏ¿© ¹Ì¼¼´©ÃâÀ» Æò°¡ÇÏ¿´´Ù. ¿¬±¸°á°ú´Â ´ÙÀ½°ú °°´Ù. 1. FermitÀÇ ÁßÇÕ¼öÃàÀÌ °¡Àå Àû¾ú°í (0.22%) Spacer (0.38%), Quicks (0.64%) Provifil (0.67%), Clip (0.67%) ÀÇ ¼øÀ̾ú´Ù. 2. ¸ðµç Àç·á´Â 24 ½Ã°£ À̳»¿¡ ±Þ°ÝÇÑ ¼öÈÆØâÀ» ³ªÅ¸³Â°í 7 ÀÏ ÈÄ ¼öÈÆØâÀº CavitonÀÌ °¡Àå ÄÇ´Ù (11.5%). ·¹Áø°è Àӽüöº¹Àç´Â 0.43-1.1%°¡·® ÆØâÇÏ¿´´Ù. 3. FermitÀÇ ¹Ì¼¼´©ÃâÀÌ °¡Àå ¸¹¾ÒÀ¸¸ç QuicksÀÇ ¹Ì¼¼´©ÃâÀÌ °¡Àå Àû¾ú´Ù. Spacer¿Í ClipÀº Caviton°ú ºñ½ÁÇÑ Á¤µµÀÇ ¹Ì¼¼´©ÃâÀ» º¸¿´´Ù. 4. ÁßÇÕ¼öÃà ¶Ç´Â ¼öÈÆØâ°ú ¹Ì¼¼´©Ãâ »çÀÌÀÇ Á÷Á¢Àû ÀÎ »ó°ü°ü°è´Â °üÂûÇÒ ¼ö ¾ø¾ú´Ù.
The purpose of this study was to measure the polymerization shrinkage and hygroscopic expansion of resin-based temporary filling materials and to evaluate microleakage at the interface between the materials and cavity wall. Five resin-based temporary filing materials were investigated: Fermit (Vivadent), Quicks (Dentkist), Provifil (Promedica), Spacer (Vericom), Clip (Voco). Caviton (GC) was also included for comparison. Polymerization shrinkage of five resin-based temporary filling materials was measured using the bonded disc method. For the measurement of hygroscopic expansion, the discs of six cured temporary filling materials were immersed in saline and a LVDT displacement sensor was used to measure the expansion for 7 days. For estimating of microleakage, Class I cavities were prepared on 120 extracted human molars and randomly assigned to 6 groups of 20 each. The cavities in each group were filled with six temporary filling materials. All specimens were submitted to 1000 thermocycles, with temperature varying from . Microleakage was determined using a dye penetration test. The results were as follows: 1. Fermit had significantly less polymerization shrinkage than the other resin-based temporary fill ing materials. Fermit (0.22%) < Spacer (0.38%) < Quicks (0.64%), Provifil (0.67%), Clip (0.67%) 2. Resin-based temporary filling materials showed 0.43-1.1% expansion in 7 days. 3. Fermit showed the greatest leakage, while Quicks exhibited the least leakage. 4. There are no correlation between polymerization shrinkage or hygroscopic expansion and microleakage of resin-based temporary filling materials.
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Resin-based temporary filling material;Polymerization shrinkage;Hygroscopic expansion;Microleakage
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