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ESTIMATION OF RELATION BETWEEN TECHNIQUES OF DYE PENETRATION FOR MICROLEA-KAGE AND SEM EVALUATION FOR MARGINAL ADAPTATION OF THE RESTORATION

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Ȳ¼øÁÖ, ½Åµ¿ÈÆ,
¼Ò¼Ó »ó¼¼Á¤º¸
Ȳ¼øÁÖ ( Hwang Soon-Joo ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç
½Åµ¿ÈÆ ( Shin Dong-Hoon ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç

Abstract

º» ¿¬±¸¿¡¼­´Â »ö¼Ò ħÅõ¹ýÀ» ÀÌ¿ëÇÑ 5±Þ º¹ÇÕ·¹Áø ¼öº¹¹°ÀÇ ¹Ì¼¼´©Ãâµµ¿Í ÁÖ»çÀüÀÚ Çö¹Ì°æÀ» ÀÌ¿ëÇÑ º¯¿¬ÀûÇÕµµ¸¦ ÃøÁ¤ÇÏ°í µÎ ¹æ¹ý »çÀÌÀÇ »ó°ü¼ºÀ» Æò°¡ÇÏ°íÀÚ ÇÏ¿´´Ù. ¹ß°ÅµÈ »ç¶÷ÀÇ ´ë±¸Ä¡ 20°³ÀÇ Çù¸é¿¡ °í¼ÓÀÇ 330¹ø ¹ö¸¦ ÀÌ¿ëÇÏ¿© 5±Þ ¿Íµ¿À» (¹é¾Æ¹ý¶û°æ°èºÎ¸¦ Áß¾ÓÀ¸·Î °¡·Î 4 mm, ¼¼·Î 3 mm, ±íÀÌ 1.5 mm) Çü¼ºÇÏ°í, Æò°¡½Ã Âü°íÁ¡À¸·Î »ç¿ëÇÏ°íÀÚ 1/2¹ø ¿øÇü ¹ö·Î 6°³ÀÇ ÇÔ¸ôºÎ¸¦ ¸¸µé¾ú´Ù. Á¦Á¶»çÀÇ Áö½Ã¿¡ µû¶ó ´ÜÀÏ ´Ü°èÀÇ ¿ÃÀοø Á¢ÂøÁ¦ÀÎ Xeno III·Î Ä¡¸éÀ» ó¸®ÇÑ ´ÙÀ½, ¹Ì¼¼È¥ÇÕÇü º¹ÇÕ·¹ÁøÀÎ Esthet X·Î ´ÜÀÏ ÃæÀüÇÏ¿´´Ù. ½ÃÆíÀ» ½Ä¿°¼ö¿¡ 1ÀÏ°£ º¸°üÇÑ ÈÄ Sof-Lex ½Ã½ºÅÛÀ¸·Î ¸¶¹«¸® ¹× ¿¬¸¶ÇÏ¿´´Ù. ÀÌÈÄ 5µµ¿Í 55µµ¿¡¼­ 1000ȸ ¿­¼øȯ½ÃŲ ´ÙÀ½, 50%Áú»êÀº ¿ë¾×À» ÀÌ¿ëÇÏ¿© ħÅõ½ÃÄ×´Ù. ½Ç¸®ÄÜ °í¹« ÀλóÀç¿Í Æú¸®¿ì·¹Åº ¸ðÇüÀç·Î ¼öº¹¹° ÁÖº¯ÀÇ ·¹Áø º¹Á¦¹°À» Á¦ÀÛÇÏ°í ±Ýµµ±ÝÇÑ ´ÙÀ½ ÁÖ»çÀüÀÚÇö¹Ì°æÀ¸·Î ¿ÜºÎ ¹× ³»ºÎ º¯¿¬ºÎÀÇ º¯¿¬ÀûÇÕµµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. ¶ÇÇÑ Âü°íÁ¡À» ±âÁ¡À¸·Î ¼öº¹¹°À» 3ºÐÇÑ ´ÙÀ½, ¹Ì¼¼´©Ãâµµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. ³»ºÎ ¹× ¿ÜºÎ º¯¿¬ÀûÇÕµµ¿Í ¹Ì¼¼´©Ãâµµ Æò°¡¹ý »çÀÌÀÇ »ó°ü°ü°è´Â Spearman¡¯¡¯s rho test¸¦ ÀÌ¿ëÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù. 1. ¹Ì¼¼´©Ãâµµ¿Í °¢°¢ÀÇ ¿ÜºÎ ¹× ³»ºÎ º¯¿¬ ÀûÇÕµµ´Â À¯ÀÇÇÑ »ó°ü°ü°è¸¦ º¸¿´´Ù (p <0.01). 2.³»ºÎ¿Í ¿ÜºÎÀÇ º¯¿¬ ÀûÇÕµµ »çÀÌ¿¡´Â À¯ÀÇÇÑ »ó°ü°ü°è¸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù.

The purpose of this study was to estimate the relation between techniques used for microleakage from dye penetration and for marginal adaptation from SEM evaluation of the restoration. Using high speed #330 bur class V cavities (4 X 3 X 1.5 mm around CEJ) were prepared on the buccal surface of 20 extracted human molars. Six dimples as reference points for SEM and dye penetration evaluation were made with 1/2 round bur. Cavity was bulk filled with microhybrid composite resin (Esthet X) and all-in-one adhesive (Xeno III). Teeth were stored in saline solution for one day, after then, they were finished and polished using Sof-Lex system. Fifty percent silver nitrate dye solution was used for the evaluation of microleakage and resin replica was used for marginal adaptation. All of these were done after 1000 times thermocycling between 5 and 55¡É. Vertical sections were made through three dimples of restoration to obtain samples for the evaluation of dye penetration and inner marginal adaptation. Outer adaptational estimation was done with an intact restoration before sectioning. Dye penetration was determined in three degrees and percentage of outer and inner leaky margin was estimated from SEM image The data were analysed statistically: Spearman¡¯¡¯s rho test were used to check relationships between two methods. The result were as follows : 1. There were significant relationships between degree of dye penetration and inner and outer marginal adaptations each (p < 0.01). 2. However, there was no significant relationship between the results or inner and outer marginal adaptation. Within the results of this study, relationship between the percentage of marginal adaptation and microleakage shows significant relationship. However, inner and outer marginal adaptation did not show any significant relationship mutually. [J Kor Acad Cons Dent 31 (5) :337-343, 2006]

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Composite resin;Class V cavity;Microleakage;Marginal adaptation;Dye penetration;SEM evaluation

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