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Effect of post-bleaching time intervals on resin in dentin bonding strength

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¼Û½ÅÀç ( Song Shin-Jae ) - °í·Á´ëÇб³ ÀÓ»óÄ¡ÀÇÇдëÇпø
±è¼±Á¾ ( Kim Sun-Jong ) - °í·Á´ëÇб³ ±¸·Îº´¿ø º¸Ã¶°ú
³ë¿µ¼± ( Ro Yong-Seon ) - °í·Á´ëÇб³ ÀÓ»óÄ¡ÀÇÇдëÇпø
·ùÀçÁØ ( Ryu Jae-Jun ) - °í·Á´ëÇб³ ÀÓ»óÄ¡ÀÇÇдëÇпø

Abstract

¿¬±¸¸ñÀû: º» ¿¬±¸¿¡¼­´Â 35% °ú»êÈ­¼ö¼Ò¸¦ »ç¿ëÇÏ´Â Àü¹®°¡ ¹Ì¹é ¼ú½Ä¿¡¼­ ·¹Áø Á¢ÂøÁ¦ÀÇ Á¢Âø·Â ȸº¹À» À§ÇÑ À¯¿¹ ±â°£À» ºñ±³ÇÏ°íÀÚ ÇÑ´Ù.

¿¬±¸Àç·á ¹× ¹æ¹ý:3M»çÀÇ Single Bond¿Í Z350À» ÀÌ¿ëÇÏ¿© ¹Ì¹é Á÷ ÈÄ, 1ÀÏÈÄ, 2ÀÏÈÄ, ÀÏÁÖÀÏ ÈÄÀÇ ½Ã°£ Â÷À̸¦ µÎ°í »ó¾ÆÁú¿¡ Á¢ÂøµÈ º¹ÇÕ ·¹ÁøÀÇ Àü´Ü °áÇÕ °­µµ¸¦ ÃøÁ¤ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.

°á °ú: ¹Ì¹é ó¸® Á÷ ÈÄÀÇ »ó¾ÆÁú Àü´Ü °áÇÕ °­µµ´Â ´Ù¸¥ ±º¿¡ ºñÇØ À¯ÀÇÇÏ°Ô ³·¾ÒÀ¸¸ç (P < .05), ¹Ì¹é ó¸® Àü¿¡ ºñÇØ ¾à 78%ÀÇ °áÇÕ·Â °¨¼Ò¸¦ º¸¿´´Ù. ¹Ì¹é ó¸® 1ÀÏ ÈÄÀÇ »ó¾ÆÁú °áÇÕ °­µµ´Â ¹Ì¹é Á÷ ÈÄ °¨¼ÒµÈ °áÇÕ·ÂÀÇ 51%¿¡ À̸£´Â ȸº¹À» º¸¿´À¸¸ç, 2ÀÏ °æ°úÇÑ ½ÃÆí¿¡¼­´Â °¨¼ÒµÈ °áÇÕ·ÂÀÇ 63%°¡ ȸº¹µÇ¾ú´Ù. µÎ ±ºÀº ¹Ì¹é Á÷ ÈÄ¿¡ ºñÇØ À¯ÀÇÇÏ°Ô Å« ȸº¹·ÂÀ» º¸¿´À¸³ª, µÎ ±º °£¿¡´Â À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù (P > .05). ¹Ì¹é ó¸® ÈÄ °áÇÕ·ÂÀÇ È¸º¹Àº Ãʱâ 24½Ã°£ À̳»¿¡ ±Þ°ÝÈ÷ ÀϾ¸ç ±× ÀÌÈÄ¿¡´Â ¼­¼­È÷ ÀϾ´Â °ÍÀ¸·Î »ç·áµÈ´Ù. ¹Ì¹é ÀÏÁÖÀÏ ÈÄÀÇ ½ÃÆíÀº ¹Ì¹é ó¸® Àü¿¡ ºñÇØ97%¿¡ À̸£´Â °áÇÕ·ÂÀ» º¸ÀÌ¸ç µÎ ±º °£¿¡´Â À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù (P> .05).

°á ·Ð: ±×·¯¹Ç·Î35% °ú»êÈ­¼ö¼Ò¸¦Àû¿ëÇÏ´ÂÀü¹®°¡¹Ì¹é¼ú½Ä¿¡¼­´Â1ÁÖÀÏ°£ÀÇÀ¯¿¹±â°£À»µÎ°íº¹ÇÕ·¹ÁøÁ¢Âø¼úÀ»½ÃÇàÇϴ°ÍÀÌÀûÀýÇÒ°ÍÀ¸·Î»ç·áµÈ´Ù.

Statement of Problem: There is a reduction of dentin bonding strength when the bonding procedure is carried out immediately after bleaching with peroxides.

Purpose: The aim of this study is to evaluate a proper time interval for in-office bleaching technique using 35% hydrogen peroxide.

Material and Methods: Fifty extracted non-caries human third molars were used in this study. Buccal enamel of each tooth was removed and polished by 600 grits silicone carbide paper. They were randomly divided into five groups and bleached 35% hydrogen peroxide except control group. All groups were bonded with Single Bond/Z 350 after each time intervals ; Group-A: control, no bleaching treatment. Group-B: resin bonding immediately after bleaching. Group-C: resin bonding 1day after bleaching. Group-D: resin bonding 2 days after bleaching. Group-E: resin bonding 7days after bleaching. Shear bond strengths were measured with a cross-head speed of 1.0 mm/min using an Instron machine. The data of results were statistically analyzed by analysis of variance (ANOVA) and Tukey multiple comparison test. (P = .05)
Results: There were significant decreases in mean shear strength in immediately bonding group after bleaching. The reduction of bond strengths was 78% compared with the group of no bleaching treatment. Group C showed the recovery of 51%, and Group D showed recovery of 63%. Both of them have no statistical difference with non-bleaching group. Group E showed no statistical difference with no bleaching treatment group.

Conclusion: Dentin bonding strength is significantly reduced when bonding is performed immediately after bleaching for in-office bleaching regimens using 35% hydrogen peroxide, and increases as time goes by. One week of elapsed time between bleaching and resin bonding significantly increases bonding strengths for the in-office bleaching technique.

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¹Ì¹é;»ó¾ÆÁú Á¢Âø;35% °ú»êÈ­¼ö¼Ò;°áÇÕ °­µµ
bleaching;dentin bonding;35% hydrogen peroxide;bonding strength

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