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Effect of metal primer and thermocycling on shear bonding strength between the orthodontic bracket and gold alloy

Korean Journal of Orthodontics 2009³â 39±Ç 5È£ p.320 ~ 329
ÀÌ¿µ±â, Â÷Á¤¿­, À¯Çü¼®, ȲÃæÁÖ,
¼Ò¼Ó »ó¼¼Á¤º¸
ÀÌ¿µ±â ( Lee Young-Kee ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç
Â÷Á¤¿­ ( Cha Jung-Yul ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç
À¯Çü¼® ( Yu Hyung-Seog ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç
ȲÃæÁÖ ( Hwang Chung-Ju ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç

Abstract

Ä¡°ú¿ë ±ÝÇձݿ¡ ±³Á¤¿ë ºê¶óÄÏ Á¢Âø ½Ã ±Ý¼Ó ÇÁ¶óÀÌ¸Ó¿Í ¿­¼øȯ 󸮰¡ Àü´Ü°áÇÕ°­µµ¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ¾Ë¾Æº¸±â À§ÇÏ¿© 80°³ÀÇ Ä¡°ú¿ë ±ÝÇÕ±Ý ½ÃÆíÀ» »÷µåºí¶ó½ºÆø¸ ó¸®ÇÑ ±º°ú 3Á¾·ùÀÇ ±Ý¼Ó ÇÁ¶óÀ̸Ó(Alloy Primer, Metaltite, V-Primer)󸮸¦ ½ÃÇàÇÑ ±ºÀ¸·Î ºÐ·ùÇÏ°í, À̸¦ ¿­¼øȯ ó¸® ½ÃÇà ¿©ºÎ¿¡ µû¶ó ¸ðµÎ 8°³ ±ºÀ¸·Î ºÐ·ùÇÏ¿´´Ù. ¸¸´É¹°¼º½ÃÇè±â¸¦ »ç¿ëÇÏ¿© ºê¶óÄÏÀÇ Àü´Ü°áÇÕ°­µµ¸¦ ÃøÁ¤ÇÏ°í, modified ARI (Adhesive Remnant Index) scores¸¦ ÅëÇØ ºê¶óÄÏ Á¢Âø¸éÀÇ ÆÄÀý ¾ç»óÀ» Æò°¡ÇÏ¿´´Ù. ¿­¼øȯ ó¸® ¹Ì½ÃÇà ½Ã¿¡´Â ±Ý¼Ó ÇÁ¶óÀ̸ÓÀÇ Àû¿ë ½Ã »÷µåºí¶ó½ºÆø¸ ´Üµ¶À¸·Î ó¸®ÇÑ °æ¿ì¿¡ ºñÇÏ¿© Åë°èÀûÀ¸·Î À¯ÀǼº ÀÖ´Â Àü´Ü°áÇÕ°­µµÀÇ Áõ°¡°¡ ÀÖ¾ú´Ù (p £¼ 0.05). ¿­¼øȯ 󸮸¦ ½ÃÇàÇÑ ±º¿¡´Â ±Ý¼Ó ÇÁ¶óÀ̸ÓÀÇ Ã³¸®¿¡ ÀÇÇÑ Àü´Ü°áÇÕ°­µµÀÇ º¯È­´Â À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù (p £¾ 0.05). ±Ý¼Ó ÇÁ¶óÀ̸Ӹ¦ Àû¿ëÇÑ °æ¿ì ¿­¼øȯ ó¸® ¹Ì½ÃÇà ½Ã¿¡´Â ÆÄÀý ¾ç»óÀÌ ºê¶óÄÏ°ú Á¢ÂøÁ¦ °è¸é¿¡¼­ÀÇ ÆÄÀý ¹ß»ý ºóµµ°¡ ³ô¾ÒÀ¸³ª, ¿­¼øȯ ó¸® ½ÃÇà ½Ã¿¡´Â °¢ ±º °£ ÆÄÀý ¾ç»ó¿¡ À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù. ÀÌ»óÀÇ °á°ú·Î ±Ý¼Ó ÇÁ¶óÀ̸ÓÀÇ Àû¿ëÀÌ Ä¡°ú¿ë ±ÝÇձݿ¡ ´ëÇÑ ±³Á¤¿ë ºê¶óÄÏ Á¢Âø ½Ã Ãʱâ Á¢Âø °­µµ¿¡¼­´Â À¯ÀǼº ÀÖ´Â °áÇÕ·ÂÀÇ Áõ°¡¸¦ º¸À̳ª, ¿­¼øȯ ó¸® ½ÃÇà ÈÄ¿¡´Â °áÇÕ °­µµ¿¡¼­´Â À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø´Â °ÍÀ¸·Î ³ªÅ¸³ª ±Ý¼Ó ÇÁ¶óÀ̸ӿ¡ ÀÇÇÑ °áÇÕ·Â Áõ°¡°¡ °¨¼ÒÇÏ´Â °ÍÀ¸·Î »ý°¢ÇÑ´Ù.

Objective: The aim of this study was to evaluate the effect of metal primers and thermocycling on shear bond strength between the orthodontic bracket and gold alloy.

Methods: For this study, 80 specimens made of dental gold alloy were divided into 8 groups based on the combination of metal primers (none, Alloy primer, Metaltite, V-primer) and thermocycling (with and without thermocycling). Shear bond strength testing was performed with a universal testing machine. Bond failure sites were classified by a modified ARI (Adhesive Remnant Index) score.

Results: All metal primer treated groups showed a significantly higher shear bond strength than the only sandblasting treated group without thermocycling (p £¼ 0.05). There were no significant differences on shear bond strength in the groups with thermocycling (p £¾ 0.05). Bond failure sites of the metal primer treated group without thermocycling occurred at gold alloy/adhesive interface, whereas there were no differences on bonding failure sites in the groups with thermocycling.

Conclusions: These findings suggest that using metal primer on gold alloy enhances the initial bracket bond strength. But, this effect was not shown with thermocycling.

Å°¿öµå

Á¢Âø °­µµ; ºê¶óÄÏ; ±ÝÇÕ±Ý; ±Ý¼Ó ÇÁ¶óÀ̸Ó
Bond strength; Bracket; Gold alloy; Metal primer

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SCI(E)
KCI
KoreaMed