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The effects of flowable composite resin and incremental filling technique on microleakage of composite resin restoration

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ÀÌÈ­°æ ( Lee Hwa-Kyung ) - °¡Å縯´ëÇб³ ÀÓ»óÄ¡°úÇдëÇпø º¸Ã¶°ú
ÀÌÁÖÈñ ( Lee Joo-Hee ) - °¡Å縯´ëÇб³ ÀÓ»óÄ¡°úÇдëÇпø º¸Ã¶°ú

Abstract

º¹ÇÕ·¹ÁøÀº ±¸°­ ³»¿¡¼­ Á÷Á¢¼öº¹ÇÔÀ¸·Î½á ±â°ø°úÁ¤À» °ÅÄ¡Áö ¾Ê¾Æ ¼öº¹¹°ÀÇ ¿ÀÂ÷¸¦ ÁÙÀÏ ¼ö ÀÖ´Â ÀåÁ¡ÀÌ ÀÖ´Â ¹Ý¸é, ÁßÇÕ ¹ÝÀÀ½Ã¿¡ ÁßÇÕ¼öÃàÀÌ Å©°Ô ³ªÅ¸³ª´Â ´ÜÁ¡ÀÌ ÀÖ´Ù. ÀÌ°ÍÀº Á¢ÂøÁ¦¿Í »ó¾ÆÁú°£ÀÇ °áÇÕÀ» ¹æÇØÇÏ¸ç ¼úÈÄ °ú¹ÎÁõÀÇ ¿øÀÎÀÌ µÇ±âµµ ÇÑ´Ù. ÁßÇÕ¼öÃàÀ¸·Î ÀÎÇÑ º¹ÇÕ·¹ÁøÀÇ º¯¿¬Æó¼â¸¦ °³¼±Çϱâ À§ÇÏ¿© ±Û·¡½º ¾ÆÀÌ¿À³ë¸Ó³ª, resinous liners ¶Ç´Â ½Å¼¼´ë »ó¾ÆÁú Á¢ÂøÁ¦¿Í °°Àº ³·Àº ź¼º°è¼öÀÇ ÀÌÀåÀçµéÀÌ ¼Ò°³µÇ¾ú´Ù. ±×·³¿¡µµ ºÒ±¸ÇÏ°í ÀÌ·± ÀÌÀåÀçµéÀÌ º¹ÇÕ·¹ÁøÀÇ ¹Ì¼¼º¯¿¬´©ÃâÀ» ¸¸Á·½º·´°Ô ¾ø¾ÖÁÖÁö´Â ¸øÇÏ¿´À¸¸ç, ÃÖ±Ù¿¡´Â À¯µ¿¼º ·¹ÁøÀ» ÀÌÀåÀç·Î »ç¿ëÇÏ¿© ¹Ì¼¼º¯¿¬´©ÃâÀ» ÁÙÀÌ´Â ¹æ¹ýÀÌ ¼Ò°³µÇ¾ú´Ù1,2).
À¯µ¿¼º ·¹ÁøÀº Èñ¼®´Ü·®Ã¼ÀÇ ÇÔ·®À» Áõ°¡½ÃÅ°°Å³ª ÇÊ·¯ÀÇ ÇÔ·®À» °¨¼Ò½ÃÄÑ À¯µ¿¼ºÀ» Çâ»ó½ÃŲ º¹ÇÕ·¹ÁøÀÌ´Ù. À¯µ¿¼º ·¹ÁøÀº ÇÏÀ̺긮µå·¹Áø°ú ºñ±³ÇßÀ» ¶§ ÇÊ·¯ »çÀÌÁî´Â À¯»çÇÏÁö¸¸ ÇÊ·¯ÇÔ·®ÀÌ ³·´Ù3). ±×·Î ÀÎÇØ Åº¼º°è¼ö°¡ ³·°í ±íÀº ¿Íµ¿¿¡ ÀÌÀåÀç·Î »ç¿ëÇϸé ź¼ºÃþÀÇ Çü¼ºÀ» À¯µµÇÏ¿© ·¹ÁøÀÇ ÁßÇÕ¼öÃàÀ» º¸»óÇÑ´Ù°í ÇÏ¿´´Ù4).
C-factor´Â ¼öº¹¹°°ú Ä¡¾Æ¿ÍÀÇ Á¢Âø¸é¼ö¿Í Á¢ÂøÇÏÁö ¾ÊÀº ¸é¼ö¿ÍÀÇ »ó°ü°ü°è¸¦ ³ªÅ¸³½´Ù. Áï, ±íÀº ¿Íµ¿Àº º¹ÇÕ·¹ÁøÀÇ ÁßÇÕ¼öÃà½Ã¿¡ c-factor°¡ ºÒ¸®Çϱ⠶§¹®¿¡ Á¡ÃþÀûÀ¸·Î ÃæÀüÇÏ°í ÁßÇÕÇϴµ¥ À̶§ ź¼º°è¼ö°¡ ³·Àº À¯µ¿¼º ·¹ÁøÀ» ¸ÕÀú µµÆ÷ÇÏ¹Ç·Î½á »óÃþÀÇ º¹ÇÕ·¹ÁøÀÇ ÁßÇÕ¼öÃàÀ¸·Î ÀÎÇÑ ¼öÃàÀÀ·ÂÀ» Èí¼öÇÏ°í ºÐ»ê½Ãų ¼ö ÀÖ´Ù´Â ÁÖÀåÀÌ Á¦±âµÇ°í ÀÖ´Ù5). À¯µ¿¼º ·¹ÁøÀ» 8-20§­Á¤µµ·Î ¾ã°Ô Ä¡¼ö¸é¿¡ ÃæÀüÇÏ°í ÁßÇÕÇϸé, truly elastic wallÀ» ¸¸µé¾î »ó¾ÆÁú Á¢ÂøÀ» µ½´Â´Ù°í ÇÏ¿´´Ù4).
À¯µ¿¼º ·¹ÁøÀ» º£À̽º³ª ÀÌÀåÀç·Î »ç¿ëÇϸé c-factor¸¦ ³·Ãß´Â ¿ªÇÒÀ» ±â´ëÇÒ ¼ö Àִµ¥ c-factor°¡ ³·¾ÆÁö¸é ³»ºÎÀÇ ÀúÇ×µµ °°ÀÌ ³·¾ÆÁö¸ç, ÀÌ°ÍÀº ¸ð³ë¸ÓÀÇ È­ÇÐÀû º¯È¯À¸·Î ÀÎÇØ »ý±â´Â ¼öÃàÀÀ·Â°ú »óÃþÀÇ º¹ÇÕ·¹ÁøÀ» ºÙÀâ¾ÆµÎ·Á´Â Á¢ÂøÁ¦ »çÀÌÀÇ °ßÀηµµ ³·¾ÆÁø´Ù´Â °ÍÀ» ÀǹÌÇÑ´Ù6). º» ¿¬±¸´Â À¯µ¿¼º ·¹ÁøÀÇ ¹Ì¼¼º¯¿¬´©Ãâ¿¡ ´ëÇÑ È¿°ú¸¦ Á÷Á¢ È®ÀÎÇÏ°í, ±íÀº ¿Íµ¿À» ÇÑ ¹ø¿¡ ÃæÀüÇÏÁö ¾Ê°í ³ª´©¾î Á¡Ãþ ÃæÀüÇÏ´Â °ÍÀÌ ·¹ÁøÀÇ ÁßÇÕ¼öÃàÀ» ¾î´À Á¤µµ º¸»óÇÏ´ÂÁö¸¦ ¼öº¹¹° º¯¿¬ÀÇ ¹Ì¼¼º¯¿¬´©ÃâÀ» ÃøÁ¤ÇÔÀ¸·Î½á ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù

The purpose of this in vitro study was to evaluate the effect of flowable resin as a liner and incremental filling technique on microleakage of composite resin restoration.
Composite resin restoration has good esthetic value but its microleakage is often an unwanted postoperative result. To overcome the microleakage problem, flowable composite resin and incremental filling technique is currently recommended.
Fifty recently extracted human molars were prepared with standardized box-shaped class1 cavity with 6.0 mm in length, 2.5 mm in width, and 3.0 mm in depth. All specimens were randomly divided into five groups and tested. (n=10) ; Group 1 - Single Bond + Filetc P60; Group2-Single Bond + Filtec P60 + Filtec P60 (light cured seperately); Group3-Single Bond + Filtec flow + Filtec P60 (light cured seperately); Group4-Single Bond + Filtec flow + Filtec P60 +Filtec P60 (light cured seperately); Group5-Single Bond +Filtec flow + Filtec flow (light cured seperately).
After being immersed in tap water for 24h, the specimens were thermocycled(1000¡¿, 5¡É-55¡É, 30 sec dwell time) and immersed in a 0.5% fuchsin solution for 24h. The restorations were sectioned mesio-distally and were evaluated for microleakage by using a 0-4 scale.
Data were subjected to the Tukey multiple comparisons test at p=0.05.
The results of this study were as follows ;
1. Although Group 2 performed slightly better than Group 1, no significant difference was observed between Group 1, 2(p>0.05).
2. A statistically significant difference between the groups of no-using flowable resin as liners(group 1,2) and the groups of using flowable resin as liners(group 3,4,5) was observed(p<0.05).
3. Although Group 4 performed slightly better than Group 3, 5, no significant difference was observed between Group 3, 4, 5(p>0.05).

Å°¿öµå

Flowable resin;Microleakage;Incremental filling;Bulk filling

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