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THE EFFECT OF LIGHT CURING METHODS AND RESIN ADHESIVES ON THE MICROLEAKAGE OF RESTORATIONS IN PRIMARY TEETH

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Abstract

±¤ÁßÇÕÇü º¹ÇÕ·¹Áø ¹× ´Ù¾çÇÑ ·¹Áø Á¢ÂøÁ¦´Â ÃÖ±Ù ¼Ò¾ÆÀÇ À¯Ä¡ ¼öº¹¿¡ »ç¿ëÀÌ Áõ°¡ÇÏ°í ÀÖ´Ù. º» ¿¬±¸´Â À¯Ä¡ÀÇ º¹ÇÕ·¹Áø ¼öº¹ ½Ã ÁßÇÕ¹æ¹ý°ú Á¢ÂøÁ¦¿¡ µû¸¥ ¹Ì¼¼´©ÃâÀÇ Â÷À̸¦ ½ÇÇèÀûÀ¸·Î °üÂûÇÏ°íÀÚ ÇÏ¿´´Ù.
Å»¶ô±â¿¡ ÀÖ´Â °ÇÀüÇÑ À¯ÀüÄ¡ 150°³ÀÇ ¼ø¸é¿¡ Á÷°æ 1.6mm, ±íÀÌ 1.6mmÀÇ ¿Íµ¿À» Çü¼ºÇÏ¿´´Ù. ¿Íµ¿ÀÇ ÃæÀüÀç·Î½á 1Á¾ÀÇ º¹ÇÕ·¹Áø, 1Á¾ÀÇ ÄÞÆ÷¸Ó, 4Á¾ÀÇ ·¹Áø Á¢ÂøÁ¦¸¦ »ç¿ëÇÏ¿´´Ù. ÁßÇÕ ±¤¿øÀº 3Á¾À» »ç¿ëÇÏ¿´´Ù. ÃæÀüÀÌ ¿Ï·áµÈ °¢ ½ÃÆíÀº Sof-Lex Æú¸®½Ì µð½ºÅ©·Î Ç¥¸éÀ» ¿¬¸¶ÇÑ ÈÄ 5¡É¿Í 55¡É¿¡ °¢ 30Ãʾ¿ °è·ù½ÃÄÑ 1.000ȸ ¿­¼øȯÇÏ°í 2% methylene blue ¼ö¿ë¾×¿¡ ³Ö¾î »ö¼Ò¸¦ ħÅõ½ÃŲ ÈÄ Àú¼Ó diamond cutter(Isomet^(TM), Buehler, USA)¸¦ ÀÌ¿ëÇÏ¿© ¼ø¸éÀ» ±Ù¿ø½ÉÀ¸·Î Àý´ÜÇÏ¿´´Ù.
°¢ Àç·áº° ¹Ì¼¼´©ÃâÀÇ Á¤µµ¸¦ °üÂûÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. ÃæÀüÀç ¹× ±¤ÁßÇÕ ¹æ¹ý¿¡ µû¸¥ ¹Ì¼¼´©ÃâÀ» ÃøÁ¤ÇÑ °á°ú, ÄÞÆ÷¸Ó¸¦ »ç¿ëÇÑ 5±º¿¡¼­ ÃæÀü¹æ¹ý°ú °ü°è¾øÀÌ °¡Àå ÀÛ¾Ò°í, Clearfil SE bond¸¦ Optilux 501·Î ÁßÇÕÇÑ ±º¿¡¼­ °¡Àå ÄÇÀ¸³ª Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷ÀÌ´Â ¾Æ´Ï¾ú´Ù(P>0.05).
2. ÃæÀüÀç¿¡ µû¸¥ ¹Ì¼¼´©ÃâÀ» ÃøÁ¤ÇÑ °á°ú, ÄÞÆ÷¸Ó¸¦ ÃæÀüÇÑ 5±º¿¡¼­ I~4±ºÀÇ º¹ÇÕ·¹Áø ÃæÀü±º¿¡ ºñÇØ ´õ ÀÛÀº ¹Ì¼¼´©ÃâÀ» º¸¿´´Ù(P<0.05).
3. ±¤ÁßÇÕ ¹æ¹ý¿¡ µû¸¥ ¹Ì¼¼´©ÃâÀ» ÃøÁ¤ÇÑ °á°ú, Optilux 501À» »ç¿ëÇÑ ±º¿¡¼­ °¡Àå ÀÛ¾Ò°í, Flipo¸¦ »ç¿ëÇÑ ±º¿¡¼­ °¡Àå ÄÇÀ¸³ª Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷ÀÌ´Â ¾Æ´Ï¾ú´Ù(P>0.05).
Objective : The purpose of this study was to evaluate the effects of several light curing methods and several adhesives on the microleakage of composite resin restorations in primary teeth.
Materials and methods = In 150 extracted human primary anterior teeth, O-shaped cavities were prepared in the labial surface; the cavity diameter and depth were 1.6mm. The cavities were filled with light-activated composite resin, Compoglass. Four kinds of adhesives were used. Each filling materials were polymerized with three light cure methods. The restorations were polished using Sof-Lex discs(3M Co., USA). The samples were thermocycled 1,000 times between 5C and 5510 with a 1-minute dwell time. Then, they were immersed in a 2% methylene blue solution(pH 7) for 12hours. Subsequently they were sectioned labio-lingually through the center of the restoration with a diamond saw at low speed with a water coolant, and evaluated by stereomicroscopy. Microleakage analyses were done, using scores from 0 to 4.
Results : Results showed the least microleakage in Compoglass group(P(0.05). There were less microleakage in SBMP group among the adhesive groups, but no significant difference was observed(P)0.05). And there were no significant differences among the groups depending on curing methods(P)0.05).

Å°¿öµå

À¯Ä¡;¹Ì¼¼´©Ãâ;º¹ÇÕ·¹Áø;ÄÞÆ÷¸Ó;·¹Áø Á¢ÂøÁ¦;±¤ÁßÇÕ;Primary teeth;Microleakage;Composite resin;Compomer;Resin adhesives;Light curing

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