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Modified laser etching technique of enamel for bracket bonding

Korean Journal of Orthodontics 2010³â 40±Ç 2È£ p.87 ~ 94
À±¹Î¼º, ÀÌ»ó¹Î, ¾çº´È£,
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À±¹Î¼º ( Yun Min-Sung ) - ÇѸ²´ëÇб³ ¼º½Éº´¿ø Ä¡°úÁø·á¼¾ÅÍ Ä¡°ú±³Á¤°ú
ÀÌ»ó¹Î ( Lee Sang-Min ) - ÇѸ²´ëÇб³ ¼º½Éº´¿ø Ä¡°úÁø·á¼¾ÅÍ Ä¡°ú±³Á¤°ú
¾çº´È£ ( Yang Byung-Ho ) - ÇѸ²´ëÇб³ ¼º½Éº´¿ø Ä¡°úÁø·á¼¾ÅÍ Ä¡°ú±³Á¤°ú

Abstract

Àü´Ü°áÇÕ°­µµ¸¦ °­È­Çϱâ À§ÇØ ·¹ÀÌÀú¸¦ ÀÌ¿ëÇÑ ºÎ½Ä°ú »êÀ» ÀÌ¿ëÇÑ ºÎ½ÄÀÇ ºñ±³ ¿¬±¸°¡ ¸¹ÀÌ ÁøÇàµÇ¾î¿Ô´Ù. º» ¿¬±¸¿¡¼­´Â Er,Cr:YSGG laser¿Í ÀüÅëÀûÀÎ »êºÎ½Ä¹ýÀ» È¥ÇÕÇÑ ¹æ¹ýÀÇ Àü´Ü°áÇÕ°­µµÀÇ º¯È­¿¡ ´ëÇÑ Æò°¡¸¦ ÇÏ°íÀÚ ÇÑ´Ù. ±³Á¤ÀûÀÎ ¸ñÀûÀ¸·Î ¹ßÄ¡µÈ 64°³ÀÇ °ÇÀüÇÑ ¼Ò±¸Ä¡¸¦ ÀÌ¿ëÇÏ¿© 16°³¾¿ 4°³ÀÇ ±ºÀ¸·Î ³ª´©¾ú´Ù. ù ¹ø° ±ºÀº 37% ÀλêÀ» 15ÃÊ Àû¿ë½ÃÅ°´Â ÀüÅëÀûÀÎ ºÎ½Ä ¹æ¹ýÀ» ÅÃÇÏ¿´°í, µÎ ¹ø° ±ºÀº ¹°¹æ¿ï·¹ÀÌÀú·Î 1.5 W·Î 10ÃÊ°£ ºÎ½Ä½ÃŲ ÈÄ ÀüÅëÀûÀÎ »êºÎ½Ä ¹æ¹ýÀ» ½ÃÇàÇÏ¿´´Ù. ¼¼ ¹ø° ±ºÀº µÎ ¹ø° ±º°ú °°Áö¸¸ »êºÎ½ÄÀ» ¸ÕÀú ½ÃÇàÇÑ ÈÄ ¹°¹æ¿ï·¹ÀÌÀú·Î ºÎ½Ä½ÃÄ×´Ù. ³× ¹ø° ±ºÀº ¹°¹æ¿ï·¹ÀÌÀú¸¦ ÀÌ¿ëÇÏ¿© 1.5 W·Î 15ÃÊ°£ ºÎ½Ä½ÃÄ×´Ù. ÀÌÈÄ Àü´Ü°áÇÕ°­µµÀÇ ÃøÁ¤ ¹× Ä¡¾ÆÇ¥¸éÀÇ Æ¯Â¡ °üÂû, ±×¸®°í Á¢ÂøÁ¦ÀÜ·ùÁö¼ö¸¦ Æò°¡ÇÏ¿´´Ù. µÎ ¹ø°, ¼¼ ¹ø° ±ºÀº ù ¹ø°, ³× ¹ø° ±º¿¡ ´ëÇÏ¿© Àü´Ü°áÇÕ°­µµ°¡ ³ô°Ô ÃøÁ¤µÇ¾ú´Ù. ÇÏÁö¸¸ µÎ °¡Áö ±â¹ýÀÇ º¹ÇÕ»ç¿ë ¼ø¼­¸¦ ´Þ¸®ÇÑ µÎ ¹ø°, ¼¼ ¹ø° ±º »çÀÌ¿¡´Â Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷ÀÌ°¡ ³ªÁö ¾Ê¾Ò´Ù. ±âÁ¸ »êºÎ½ÄÀ» ÀÌ¿ëÇÑ ºê¶óÄÏ Á¢Âø¹ýº¸´Ù »êºÎ½Ä°ú Er,Cr:YSGG laser¸¦ º¹ÇÕÀûÀ¸·Î »ç¿ë ½Ã, Çâ»óµÈ Àü´Ü°áÇÕ°­µµ¸¦ ¾òÀ» ¼ö ÀÖ´Ù. (´ëÄ¡±³Á¤Áö 2010;40(2):87-94)

Objective: Many studies have carried out research on comparisons between laser etching and conventional etching systems to investigate methods of reinforcing shear bond strength. The purposes of this study were to assess the efficiency of bonding with erbium, chromium doped: yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser etching combined with the conventional etching technique.

Methods: Sixty-four sound premolars, extracted for orthodontic purposes, were randomly divided into 4 groups and treated in the following manner. First group, conventional etching of 37% phosphoric acid for 15 seconds (control); second group, 1.5 W laser etching for 10 seconds followed by conventional etching; third group, conventional etching followed by 1.5 W laser etching; fourth group, 1.5 W laser etching for 15 seconds only. We assessed the shear bond strength, the surface characteristics, and the adhesive remnant index scores between all groups.

Results: Experimental groups showed higher shear bond strength than the control group. But no statistically significant differences were found between the second and third groups. Adhesive remnant scores were compared with the Kruskal-Wallis test, and no statistically significant differences were found between all groups.

Conclusions: To obtain maximum shear bonding strength, a combined technique of Er,Cr:YSGG and 37% phosphoric acid is useful even though it may be inconvenient.

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·¹ÀÌÀú;ºÎ½Ä;»êºÎ½Ä;Àü´Ü°áÇÕ°­µµ
Laser;Etching;Acid etching;Shear bond strength

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