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Shear bond strength of orthodontic adhesive to amalgam surface using light-cured resin

Korean Journal of Orthodontics 2005³â 35±Ç 6È£ p.443 ~ 450
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Abstract

º» ¿¬±¸´Â ¾Æ¸»°¨ ¸é¿¡ ±¤ÁßÇÕÇü ·¹ÁøÀ¸·Î ±³Á¤¿ë ºê¶óÄÏÀ» Á¢Âø½Ãų °æ¿ì, ±¤¿øÀÇ Â÷ÀÌ(ÇÒ·Î°Õ ±¤ÁßÇÕ±â¿Í light-emitting diode (LED) ±¤ÁßÇÕ±â)¿Í »÷µåºí¶ó½ºÆà ǥ¸éó¸® ¿©ºÎ¿¡ µû¸¥ Á¢ÂøÁ¦ÀÇ Àü´Ü°áÇÕ°­µµ¸¦ ºñ±³ÇÏ°íÀÚ ½ÃÇàµÇ¾ú´Ù. ¹ß°ÅµÈ ¼Ò±¸Ä¡ 30°³¸¦ ´ëÁ¶±ºÀ¸·Î ÀÌ¿ëÇÏ¿´À¸¸ç, ¹ý¶ûÁú Ç¥¸éÀ» »êºÎ½ÄÇÑ ÈÄ Åë»óÀûÀÎ ¹æ¹ýÀ¸·Î ºê¶óÄÏÀ» Á¢ÂøÇÏ¿´´Ù. 60°³ÀÇ ´Ù¸¥ ¼Ò±¸Ä¡¿¡ ¾Æ¸»°¨ ÃæÀüÀ» ÇÏ¿© ½ÇÇ豺À¸·Î ÀÌ¿ëÇÏ¿´´Ù. µÎ ±º¿¡¼­ ÇÒ·Î°Õ ±¤ÁßÇÕ±â¿Í LED ±¤ÁßÇձ⸦ ÀÌ¿ëÇÏ¿© ºê¶óÄÏÀ» Á¢Âø½ÃÅ°°í ºê¶óÄÏÀÌ Å»¶ôµÉ ¶§±îÁö ÈûÀ» °¡ÇØ Àü´Ü°áÇÕ°­µµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. ½ÇÇè °á°ú, ½ÇÇ豺ÀÇ Àü´Ü°áÇÕ°­µµ´Â ¾à 3-5.5 MPa·Î ´ëÁ¶±º(19MPa)º¸´Ù ³·¾Ò´Ù. ½ÇÇ豺¿¡¼­ »÷µåºí¶ó½ºÆà ǥ¸é󸮸¦ ÇÑ °æ¿ì, ÇÒ·Î°Õ ±¤ÁßÇձ⸦ »ç¿ëÇÑ ±ºÀÌ LED ±¤ÁßÇձ⸦ »ç¿ëÇÑ ±ºº¸´Ù ³ôÀº Àü´Ü°áÇÕ°­µµ¸¦ º¸¿´À¸³ª (p<0.05), »÷µåºí¶ó½ºÆà ǥ¸é󸮸¦ ÇÏÁö ¾ÊÀº °æ¿ì¿¡´Â ±¤¿ø¿¡ µû¶ó Àü´Ü°áÇÕ°­µµ¿¡ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù. (p>0.05). ÇÒ·Î°Õ ±¤ÁßÇÕ ±º°ú LED ±¤ÁßÇÕ ±º ¸ðµÎ¿¡¼­ »÷µåºí¶ó½ºÆà ¿©ºÎ¿¡ µû¸¥ Àü´Ü°áÇÕ°­µµ¿¡ Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù (p>0.05). ¾Æ¸»°¨ ¸é¿¡ ±¤ÁßÇÕÇü ·¹ÁøÀ» ÀÌ¿ëÇÏ¿© ºê¶óÄÏÀ» Á¢ÂøÇÒ °æ¿ì, ÇÒ·Î°Õ ±¤ÁßÇÕ±â¿Í LED ±¤ÁßÇÕ±â·Î ¾òÀ» ¼ö ÀÖ´Â Á¢ÂøÁ¦ÀÇ °áÇÕ°­µµ´Â ÀÓ»óÀûÀ¸·Î »ç¿ëÇϱ⿡´Â ³·°Ô ³ªÅ¸³ª, ÀÌÀÇ ÁõÁø ¹æ¹ýÀ» µµ¸ðÇϱâ À§ÇØ ¾ÕÀ¸·Î ´õ ¸¹Àº ¿¬±¸°¡ ÇÊ¿äÇϸ®¶ó »ç·áµÈ´Ù.

This study was performed to compare the shear bond strength of orthodontic adhesive to amalgam according to different light sources (halogen-based light and light emitting diode (LED)) and amalgam surface treatments. Ninety extracted human premolars were randomly divided into 6 groups (4 experimental and 2 control groups) of 15 by light sources and surface treatments. Orthodontic brackets were bonded and shear bond strength was measured with an Instron universal testing machine. The findings were as follows: The bond strength of adhesive to amalgam surface was 3-5.5 MPa which was lower than that of acid-etched enamel (19 MPa) control. In the sandblasted amalgam surface, the shear bond strength of the halogen light group was higher than that of the LED group (p<0.05) but, in the non-treated amalgam surface, there was no significant difference in the shear bond strength according to the light sources (p>0.05). Within the same light source. sandblasting had no significant effect on the shear bond strength of the adhesive bonded to amalgam surface (p>0.05). there was no significant difference in shear bond strength according to the light sources in acid-etched enamel control groups. This results suggerst that there can be a limit in using light curing adhesives when brackets are bonded to an amalgam surface. Additional clinical studies are necessary before routine use of halogen light and LED light curing units can be recommended in bonding brackets to an amalgam surface.

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¾Æ¸»°¨;Àü´Ü°áÇÕ°­µµ;ÇÒ·Î°Õ ±¤ÁßÇÕ±â;LED ±¤ÁßÇÕ±â;Amalgam;Shear bond strength;Halogen;LED

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SCI(E)
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KoreaMed