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The comparison of microtensile bond strength with immediate and delayed dentin sealing

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ÀÌÈï¹è, ½ÉÁؼº, ÇÑÁ¾Çö, ±è¼±Àç,
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ÀÌÈï¹è ( Lee Heung-Bae ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
½ÉÁؼº ( Shim June-Sung ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
ÇÑÁ¾Çö ( Han Chong-Hyun ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
±è¼±Àç ( Kim Sun-Jae ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç

Abstract

¿¬±¸¸ñÀû: º» ¿¬±¸ÀÇ ¸ñÀûÀº Áï½Ã »ó¾ÆÁú ºÀ¼â (immediate dentin sealing; IDS)À» ½ÃÇàÇÑ °æ¿ì¿Í Áö¿¬ »ó¾ÆÁú ºÀ¼â (delayed dentin sealing ; DDS)¸¦ ½ÃÇàÇÑ °æ¿ì¸¦ ºñ±³ÇÏ°í, Áö¿¬ »ó¾ÆÁú ºÀ¼â ½Ã »ó¾ÆÁú Á¢ÂøÁ¦¸¦ ¸ÕÀú ÁßÇÕÇÑ °æ¿ì¿Í º¹ÇÕ·¹Áø°ú ÇÔ²² ÁßÇÕÇÑ °æ¿ì¿¡ À־ »ó¾ÆÁú°ú º¹ÇÕ·¹ÁøÀÇ °áÇÕ°­µµ¸¦ ºñ±³ÇÏ´Â °ÍÀÌ´Ù.

Àç·á ¹× ¹æ¹ý: »ç¶÷ÀÇ °ÇÀüÇÑ ´ë±¸Ä¡ 20°³ÀÇ Ä¡°üºÎ¸¦ »èÁ¦ÇÏ¿© »ó¾ÆÁú Ç¥¸éÀ» ³ëÃâ½ÃÄ×´Ù. »ó¾ÆÁú Á¢Âø ÈÄ ¹Ù·Î º¹ÇÕ·¹ÁøÀ» ÃàÁ¶ÇÏ´Â °úÁ¤¿¡¼­ ±ºÀ» 4 °¡Áö·Î ³ª´©¾ú´Ù. ´ëÁ¶±ºÀº ÁÖ¼ö ÇÏ¿¡ model trimmer¸¦ ÀÌ¿ëÇÏ¿© Ä¡°üºÎ »èÁ¦ ÈÄ ¹Ù·Î 2-step etch-and-rinse dentin bonding agent (ONE-STEP, Bisco, USA)¸¦ ÀÌ¿ëÇÏ¿© »ó¾ÆÁú Á¢ÂøÀ» ½ÃÇàÇÏ°í º¹ÇÕ·¹Áø (RENEW, Bisco, USA)À» ¼öº¹ÇÏ¿´´Ù. ½ÇÇ豺 A´Â Ä¡¾Æ »èÁ¦ ÈÄ, FermitÀ» ÀÌ¿ëÇÑ Àӽüöº¹ »óÅ·Π5ÀÏ°£ »ý¸®½Ä¿°¼ö¿¡ º¸°üÇÏ¿´´Ù. Àӽüöº¹ Á¦°Å ÈÄ »ó¾ÆÁú Á¢ÂøÁ¦¸¦ µµÆ÷ÇÏ°í º°µµÀÇ ÁßÇÕ¾øÀÌ ·¹ÁøÀ» ÃàÁ¶ÇÏ°í ÇÔ²² ÁßÇÕÇÏ¿´´Ù. ½ÇÇ豺 B´Â Ä¡¾Æ »èÁ¦ ÈÄ, »ó¾ÆÁú Á¢ÂøÁ¦ µµÆ÷ ¹× ÁßÇÕÇÏ°í Àӽüöº¹À» ½ÃÇàÇÏ¿© 5ÀÏ°£ »ý¸®½Ä¿°¼ö¿¡ º¸°üÇÏ¿´´Ù. Àӽüöº¹ Á¦°Å ÈÄ »ó¾ÆÁú Á¢ÂøÁ¦¸¦ µµÆ÷ÇÏ°í º°µµÀÇ ÁßÇÕ¾øÀÌ ·¹ÁøÀ» ÃàÁ¶ÇÏ°í ÇÔ²² ÁßÇÕÇÏ¿´´Ù. ½ÇÇ豺 C´Â Ä¡¾Æ »èÁ¦ ÈÄ, Àӽüöº¹ »óÅ·Π5ÀÏ°£ »ý¸®½Ä¿°¼ö¿¡ º¸°üÇÏ¿´´Ù. Àӽüöº¹ Á¦°Å ÈÄ, »ó¾ÆÁú Á¢ÂøÁ¦¸¦ µµÆ÷ ¹× ÁßÇÕÇÏ°í, ·¹ÁøÀ» ÃàÁ¶ ¹× ÁßÇÕÇÏ¿´´Ù. °¢ Ä¡¾Æ¸¦ ´Ü¸éÀû 1 mm2, ±æÀÌ 10-12 mmÀÇ ¸·´ëÇü ½ÃÆíÀ¸·Î Àý´ÜÇÏ¿©, ¹Ì¼¼ÀÎÀå °áÇÕ°­µµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. ÃøÁ¤µÈ °áÇÕ°­µµ´Â one-way ANOVA¸¦ ÀÌ¿ëÇÏ¿© ºñ±³ ºÐ¼®ÇÏ¿´À¸¸ç, »çÈÄ °ËÁõÀº Scheffe test¸¦ ÀÌ¿ëÇÏ¿© ºÐ¼®ÇÏ¿´´Ù.

¿¬±¸°á°ú: º» ½ÇÇèÀÇ °á°ú´Â ´ÙÀ½°ú °°´Ù. 1. Ä¡¾Æ »èÁ¦ ÈÄ º°µµÀÇ »ó¾ÆÁú Á¢Âø ½ÃÇà ¾øÀÌ Àӽüöº¹ÇÏ°í, ·¹Áø ÃàÁ¶ Àü »ó¾ÆÁú Á¢ÂøÀ» µµÆ÷ ÈÄ º°µµÀÇ ÁßÇÕ°úÁ¤ ¾øÀÌ ·¹Áø°ú ÇÔ²² ÁßÇÕÇÒ °æ¿ì, »ó¾ÆÁú°úÀÇ ¹Ì¼¼ÀÎÀå °áÇÕ°­µµ´Â À¯ÀÇÇÏ°Ô ³·Àº °ªÀ» º¸¿´´Ù (P < .01). 2. Ä¡¾Æ »èÁ¦ ¹× Àӽà ¼öº¹ ±â°£ ÈÄ, »ó¾ÆÁú Á¢ÂøÁ¦¸¦ ¸ÕÀú ÁßÇÕÇÏ°í º¹ÇÕ ·¹ÁøÀ» ¼öº¹ÇÏ´Â °æ¿ì¿Í Ä¡¾Æ »èÁ¦ ÈÄ »ó¾ÆÁú Á¢ÂøÀ» ½ÃÇàÇÏ°í ¼öº¹¹° ÀåÂø ½Ã »ó¾ÆÁú Á¢ÂøÀ» Àç½ÃÇàÇÏ´Â °æ¿ì °£ÀÇ »ó¾ÆÁú¿¡ ´ëÇÑ °áÇÕ°­µµÀÇ Â÷ÀÌ´Â ¾ø¾ú´Ù (P > .05).

Purpose: The purpose of this study was to evaluate the effect of various methods of dentin bonding agent application on microtensile bond strength between dentin and resin, using a 2-step etch-and-rinse dentin bonding agent.
Material and methods: Twenty freshly extracted human molars were obtained and divided into 4 groups of 5 teeth. 2-step etch-and-rinse dentin bonding agent was used for all groups. The control specimens were prepared using a direct immediate bonding technique. The delayed dentin sealing (A, C) specimens were prepared using an indirect approach with delayed dentin sealing. For group A, resin was built-up on uncured dentin bonding agent, and for group C, resin was built-up on pre-cured dentin bonding agent. Preparation of the immediate dentin sealing (B) specimens also used an indirect approach with immediate dentin sealing immediately following preparation. All teeth were prepared for a microtensile bond strength test. Specimens were stored in water for 24 hours. Ten beams (1.0 ¡¿ 1.0 ¡¿ 11 mm) from each tooth were selected for testing. Bond strength data (MPa) were analyzed with a one-way ANOVA test, and post hoc comparison was done using the Scheffe¡¯s test.

Results: The mean microtensile bond strengths of control group, B and C (DDS with pre-cure) were not statisticaaly different from each other at 32.7, 33.3, 34.2 MPa. the bond strength for group A (DDS without pre-cure), 19.5 MPa, was statistically different (P < .01) from the other 3 groups.

Conclusion: When preparing teeth for indirect bonded restorations, DDS with pre-curing dentin bonding agent and IDS results in the same bond strength between dentin and resin. On the contrast, the bond strength was decreased when DDS without pre-curing dentin bonding agent was used.

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Immediate dentin sealing;Delayed dentin sealing;Dentin bonding;Microtensile bond strength

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