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Quantitative Micro-CT Evaluation of Microleakage in Composite Resin Restorations

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ÀÌ»óÀÍ ( Lee Sang-Ik ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× Ä¡Çבּ¸¼Ò
ÇöÈ«±Ù ( Hyun Hong-Keun ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× Ä¡Çבּ¸¼Ò
±è¿µÀç ( Kim Young-Jae ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× Ä¡Çבּ¸¼Ò
±èÁ¤¿í ( Kim Jung-Wook ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× Ä¡Çבּ¸¼Ò
ÀÌ»óÈÆ ( Lee Sang-Hoon ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× Ä¡Çבּ¸¼Ò
±èÁ¾Ã¶ ( Kim Chong-Chul ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× Ä¡Çבּ¸¼Ò
ÇѼ¼Çö ( Hahn Se-Hyun ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× Ä¡Çבּ¸¼Ò
Àå±âÅà( Jang Ki-Taeg ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× Ä¡Çבּ¸¼Ò

Abstract

Ä¡°ú ¼öº¹ Àç·á °Ë»ç ½Ã °¡Àå Áß¿äÇÏ°í ±âº»ÀûÀÎ °ÍÀº Ä¡¾Æ¿Í ¼öº¹¹° »çÀÌÀÇ ¹Ì¼¼´©Ãâ¿¡ ´ëÇÑ Æò°¡ÀÌ´Ù. ¹Ì¼¼ ´©ÃâÀ» Æò°¡ÇÏ´Â ¹æ¹ýÀº ¿©·¯ °¡Áö°¡ ÀÖÁö¸¸ ÀÌµé ´ëºÎºÐÀº ¸¹Àº ´ÜÁ¡µéÀ» °¡Áö°í ÀÖ´Ù. ÃÖ±Ù¿¡ °³¹ßµÈ ¹Ì¼¼ ´ÜÃþÃÔ¿µ¹ý(micro-CT)À» ÀÌ¿ëÇÏ¸é ½ÃÆíÀ» ºñÆı«ÀûÀ¸·Î ó¸®ÇÏ¿© ƯÁ¤ ¹Ðµµ¿¡ ÇØ´çÇÏ´Â ºÎºÐÀÇ 3Â÷¿øÀû ¿µ»óÀ» ¾òÀ» ¼ö ÀÖÀ¸¹Ç·Î, À̸¦ ÀÌ¿ëÇϸé Á¤È®ÇÏ°í Á¤·®ÀûÀÎ ¹Ì¼¼´©Ãâ Æò°¡µµ °¡´ÉÇÒ °ÍÀÌ´Ù.
ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº micro-CT¸¦ »ç¿ëÇÏ¿©, ·¹Áø ¼öº¹¹°ÀÇ ¹Ì¼¼ ´©Ãâµµ¸¦ Á¤·®ÀûÀÌ°í ºñÆı«ÀûÀ¸·Î ÃøÁ¤ÇÒ ¼ö ÀÖ´Â »õ·Î¿î ¹æ¹ýÀ» ã¾Æ³»°í, ÀÌ »õ·Î¿î ¹æ¹ýÀ» ±âÁ¸ÀÇ »ö¼Ò ħÅõ¹ý°ú ºñ±³Çغ¸´Â °ÍÀÌ´Ù. À̸¦ À§ÇØ, À§ÀÇ µÎ °¡Áö ¹æ¹ýÀ» »ç¿ëÇÏ¿© µÎ Á¾·ùÀÇ »ó¾ÆÁú Á¢Âø ½Ã½ºÅÛÀÇ ¹Ì¼¼´©Ãâµµ°¡ Æò°¡µÇ¾ú´Ù.
»ç¶÷ÀÇ °ÇÀü ¼Ò±¸Ä¡ 40°³¸¦ ÀÓÀÇ·Î 20°³¾¿ µÎ ±ºÀ¸·Î ³ª´©°í ´ÙÀ½°ú °°ÀÌ Ã³¸®ÇÏ¿´´Ù.
Group 1 : Adper {TM} Singe Bond »ç¿ë ÈÄ Á¦ V±Þ ¿Íµ¿ ·¹Áø ¼öº¹,
Gourp 2 : Adper {TM};Promp {TM} L-pop »ç¿ë ÈÄ Á¦ V±Þ ¿Íµ¿ ·¹Áø ¼öº¹
¸ðµç Ä¡¾ÆÀÇ 5±Þ ¿Íµ¿Àº Filtek {TM} SupremeÀ¸·Î ¼öº¹ÇÏ¿´´Ù. ±× ÈÄ °¢ ±º Áß 10°³ÀÇ Ä¡¾Æ´Â micro-CT¸¦ »ç¿ëÇÏ¿© ¹Ì¼¼ ´©Ãâµµ¸¦ Æò°¡ÇÏ°í, ³ª¸ÓÁö 10°³´Â ±âÁ¸ÀÇ »ö¼Ò ħÅõ¹ýÀ¸·Î Æò°¡ÇÏ¿´´Ù.
ÀÌ ¿¬±¸ÀÇ °á°ú´Â ´ÙÀ½°ú °°¾Ò´Ù.
1. Micro-CT¸¦ »ç¿ëÇÑ °æ¿ì, 1±ºÀº 2±ºº¸´Ù Åë°èÀûÀ¸·Î À¯ÀǼº ÀÖ°Ô ÀûÀº ¾çÀÇ ¹Ì¼¼ ´©ÃâÀ» º¸¿´´Ù(p<0.01).
2. ±âÁ¸ÀÇ »ö¼Ò ħÅõ¹ýÀ» »ç¿ëÇÑ °æ¿ì¿¡¼­ 1±ºÀº 2±ºº¸´Ù ÀûÀº ¹Ì¼¼´©ÃâÀ» º¸¿´À¸¸ç ÀÌ´Â Åë°èÀûÀ¸·Î À¯ÀǼºÀÌ ÀÖ¾ú´Ù. (p<0.01). 3. µÎ ±º°£ÀÇ ¹Ì¼¼ ´©Ãâµµ´Â micro-CT¸¦ »ç¿ëÇÑ ¹æ¹ý¿¡¼­ ´õ ÇöÀúÇÑ Â÷À̸¦ º¸¿´´Ù.
4. µÎ °¡Áö ¹æ¹ý ¸ðµÎ¿¡¼­ ¹ý¶ûÁú º¯¿¬ ºÎºÐº¸´Ù »ó¾ÆÁú º¯¿¬ ºÎºÐ¿¡¼­ ´õ ¸¹Àº ¹Ì¼¼ ´©ÃâÀ» º¸¿´´Ù.

One of the most important and basic test of dental restorative materials is the evaluation of microleakage into the tooth-restorative interface. There are many techniques to test microleakage, but most of them have several disadvantages. Recently developed microtomography(micro-CT) can provide the three dimensional image and information about the internal component in non-destructive way, therefore using micro-CT, it is possible to evaluate microleakage exactly in quantitative manner. The purpose of this study is to find a new method for quantitative and non-destructive evaluation of microleakage in composite resin restorations using micro-CT and to compare the new method with conventional dye penetration method. Thus, microleakages of two kinds of dentin bonding systems were evaluated with above two methods.
40 extracted sound human premolars were randomly divided into two groups consisting of 20 samples and restored accordingly.
Group 1 : Class V resin restorations with Adper {TM} Singe Bond
Group, 2 : Class V resin restorations with Adper{TM};Promp {TM} L-pop.
The Filtek {TM} Supreme was applied to the Class V cavities of all teeth. After that, 10 teeth from each group were applied to evaluation of microleakage using micro-CT, and other 10 teeth from each group were using conventional dye penetration method.
The conclusions of this study were as follow :
1 Using micro-CT, Group 1 showed significantly less microleakage than Group 2 and there was statistically significant difference(p<0.01) between two groups.
2. Using conventional dye penetration method, Group 1 leaked less than Group 2 and there was statistically significant difference(p<0.01) between two groups
3. The difference between two groups is more evident in the method using micro-CT.
4. In all two methods, microleakage appeared more into the cavities to dentinal margins than enamel margins.

Å°¿öµå

¹Ì¼¼´©Ãâ;¹Ì¼¼Àü»êÈ­´ÜÃþÃÔ¿µ(micro-CT);»ö¼Ò ħÅõ¹ý;3Â÷¿ø ¿µ»ó
Microleakage;Micro-CT;Dye penetration;3D image

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