NaOCl·Î ó¸®µÈ Ä¡¼ö° »ó¾ÆÁú¿¡¼ sodium ascorbate°¡ ¹Ì¼¼ÀÎÀå°áÇÕ°µµ¿¡ ¹ÌÄ¡´Â ¿µÇâ
INFLUENCE OF SODIUM ASCORBATE ON MICROTENSILE BOND STRENGTHS TO PULP CHAMBER DENTIN TREATED WITH NAOCL
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Àü¼ö¿¬ ( Jeon Soo-Yeon ) - ÀüºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç
À̱¤¿ø ( Lee Kwang-Won ) - ÀüºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç
À¯¹Ì°æ ( Yu Mi-Kyung ) - ÀüºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç
KMID : 0362320080330060545
Abstract
º» ¿¬±¸ÀÇ ¸ñÀûÀº NaOCl·Î ó¸®µÈ Ä¡¼ö° »ó¾ÆÁú¿¡ total-etching adhesive system(single bond, 3M-ESPE, St Paul, MN, USA)À» Àû¿ëÇÒ ¶§ ¹Ì¼¼ÀÎÀå°áÇÕ°µµ¿¡¼ sodium ascorbate°¡ ¹ÌÄ¡´Â ¿µÇâÀ» Æò°¡ÇÏ´Â °ÍÀÌ´Ù. ¹ßÄ¡µÈ °ÇÀüÇÑ Àΰ£ ´ë±¸Ä¡ÀÇ Ä¡¼ö° ³»¸éÀ» ´ÙÀ½°ú °°ÀÌ Ã³¸®ÇÏ¿´´Ù. 1±º, 0.9% NaCl·Î ¼¼Ã´; 2±º, 5.25% NaOCl·Î ¼¼Ã´; 3±º, 5.25% NaOCl·Î ¼¼Ã´ÇÑ ÈÄ 10% sodium ascorbate¸¦ 1ºÐ°£ Àû¿ë; 4±º, 5.25% NaOCl·Î ¼¼Ã´ÇÑ ÈÄ 10% sodium ascorbate¸¦ 1ºÐ°£ Àû¿ëÇÏ°í ´Ù½Ã 10ml ¹°·Î ¼ö¼¼; 5±º, 5.25% NaOCl·Î ¼¼Ã´ÇÑ ÈÄ 10% sodium ascorbate¸¦ 5ºÐ°£ Àû¿ë; 6±º, 5.25% NaOCl·Î ¼¼Ã´ÇÑ ÈÄ 10% sodium ascorbate¸¦ 5ºÐ°£ Àû¿ëÇÏ°í ´Ù½Ã 10ml ¹°·Î ¼ö¼¼; 7±º, 5.25% NaOCl·Î ¼¼Ã´ÇÑ ÈÄ 10% sodium ascorbate¸¦ 10ºÐ°£ Àû¿ë; 8±º, 5.25% NaOCl·Î ¼¼Ã´ÇÑ ÈÄ 10% sodium ascorbate¸¦ 10ºÐ°£ Àû¿ëÇÏ°í ´Ù½Ã 10ml ¹°·Î ¼ö¼¼. ó¸®µÈ ½ÃÆíµéÀº total-etching adhesive system(Single bond)À¸·Î ó¸®ÇÑ ÈÄ composite resin(Z250)À¸·Î ÃæÀüÇÏ°í, ¹Ì¼¼ÀÎÀå°µµ¸¦ ÃøÁ¤Çϱâ Àü 24½Ã °£ µ¿¾È º¸°üÇÏ¿´´Ù. ºÐ¼® °á°ú NaOCl ó¸® ±º(2±º)Àº ´Ù¸¥ ½ÇÇ豺µé¿¡ ºñÇØ À¯ÀǼº ÀÖ°Ô ³·Àº °áÇÕ °µµ¸¦ º¸¿´´Ù. NaCl ó¸® ±º(1±º)°ú sodium ascorbate ó¸® ±º(3-8±º)Àº À¯ÀǼº ÀÖ´Â Â÷ÀÌ°¡ ¾ø¾ú´Ù. À̹ø ¿¬±¸ °á°ú´Â NaOCl·Î ó¸®ÇÑ Ä¡¼ö° »ó¾ÆÁúÀÇ Single bond¿¡ ´ëÇÑ ¹Ì¼¼ÀÎÀå°áÇÕ°µµ´Â °¨¼ÒµÇ¸ç, 10% sodium ascorbate¸¦ Ãß°¡ÀûÀ¸·Î ó¸®ÇÏ¿´À» ¶§ °¨¼ÒµÈ °áÇÕ·ÂÀÌ È¸º¹µÊÀ» º¸¿©ÁÖ¾ú´Ù. Sodium ascorbateÀÇ ´Ù¾çÇÑ Ã³¸®½Ã°£Àº °áÇշ¿¡ ¿µÇâÀ» ¹ÌÄ¡Áö ¾Ê¾Ò´Ù.
The purpose of this study was to evaluate the influence of sodium ascorbate on microtensile bond strengths of total-etching adhesive system to pulp chamber dentin treated with NaOCl. Pulp chambers of extracted human non-caries permanent molars were treated as follows: group 1, with 0.9% NaCl; group 2, with 5.25% NaOCl; group 3, with 5.25% NaOCl and 10% sodium ascorbate for 1min; group 4, with 5.25% NaOCl and 10% sodium ascorbate for 1 min and 10ml of water; group 5, with 5.25% NaOCl and 10% sodium ascorbate for 5 min; group 6, with 5.25% NaOCl and 10% sodium ascorbate for 5 min and 10ml of water; group 7, with 5.25% NaOCl and 10% sodium ascorbate for 10 min; group 8, with 5.25% NaOCl and 10% sodium ascorbate for 10 min and 10ml of water. Treated specimens were dried, bonded with a total-etching adhesive system (Single bond), restored with a composite resin(Z250) and kept for 24h at 100% humidity to measure the microtensile bond strength. NaOCl-treated group (group 2) demonstrated significantly lower strength than the other groups. No significant difference in microtensile bond strengths was found between NaCl-treated group (group 1) and sodium ascorbatetreated groups (group 3-8). The results of this study indicated that dentin treated with NaOCl reduced the microtensile bond strength of Single bond. Application of 10% sodium ascorbate restored the bond strength of Single bond on NaOCl-treated dentin. Application time of sodium ascorbate did not have a significant effect.
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Microtensile bond strengths;NaOCl;Pulp chamber dentin;Sodium ascorbate;Total etching adhesive system
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