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An in vitro study of a few crystal growth solutions on the bracket shear bond strength

Korean Journal of Orthodontics 1999³â 29±Ç 5È£ p.613 ~ 626
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Abstract

ÀÌ ¿¬±¸´Â 30% Æú¸®¾ÆÅ©¸±»ê(ºÐÀÚ·®5,000)¿ë¾×¿¡ ¼Ò·®ÀÇ È²»ê, Ȳ»ê¸®Ä¡¿ò¿°, ÀλêÀ» ÷°¡
ÇÏ¿© 4°¡ÁöÀÇ ½ÇÇè °áÁ¤Çü¼º ¿ë¾×À» Á¦Á¶ÇÏ°í, ÀÌ ¿ë¾×À¸·Î ¹ý¶ûÁú Ç¥¸éÀ» ó¸®ÇÑ ÈÄ, ºê¶ó
ÄÏ Àü´Ü °áÇÕ°­µµ¸¦ ÃøÁ¤ÇÏ°í, ÀλêºÎ½Ä¹ý¿¡ ÀÇÇÑ °Í°ú ºñ±³ÇÏ´Â °ÍÀÌ´Ù. ¼ÒÀÇ ÇϾÇÀýÄ¡ Ä¡
°ü ¼ö¸éÀ» 37%ÀÇ Àλê¾×°ú 4°¡ÁöÀÇ ½ÇÇè °áÁ¤Çü¼º ¿ë¾×À¸·Î 60ÃÊ°£ ó¸®ÇÏ°í, 20ÃÊ°£ ¼ö¼¼
ÇÏ°í, 20ÃÊ°£ °ÇÁ¶½ÃŲ ÈÄ ±¤ÁßÇÕ ÄÞÆ÷Áþ ·¹Áø Á¢ÂøÁ¦·Î ºê¶óÄÏÀ» ºÎÂøÇÏ°í, ½Ç¿Â¿¡¼­ Áõ·ù
¼ö¼Ó¿¡ ³Ö¾î 24½Ã°£ °æ°ú½ÃŲ ÈÄ Àü´Ü°áÇÕ°­µµ¸¦ ÃøÁ¤ÇÏ°í, ·¹ÁøÁ¢ÂøÁ¦ÀÇ ÆÄÀý¾ç»óÀ» °üÂû
ÇÏ¿´À¸¸ç, À̵éÀº »óÈ£ ºñ±³ÇÏ¿© ´ÙÀ½ÀÇ °á°ú¿Í °á·Ð¿¡ µµ´ÞÇÏ¿´´Ù.
1. ½ÇÇè °áÁ¤Çü¼º ¿ë¾×¿¡ ÀÇÇÑ ºê¶óÄÏ Àü´Ü °áÇÕ°­µµ´Â ÀλêºÎ½Ä¹ý¿¡ ÀÇÇÑ °Íº¸´Ù ³·¾Ò´Ù.
2. 0.3¸ô Ȳ»ê°ú 0.6¸ô Ȳ»ê¸®Ä¡¿ò¿°ÀÌ Æ÷ÇÔµÈ 30% Æú¸®¾ÆÅ©¸±»ê ¿ë¾×Àº °¡Àå ³ôÀº Àü´Ü °á
ÇÕ °­µµ¸¦ ³ªÅ¸³Â°í, ÀλêºÎ½Ä¹ý¿¡ ÀÇÇÑ °ÍÀÇ ¾à 74%À̾ú´Ù.
3. 0.6¸ôÀÇ È²»êÀÌ Æ÷ÇÔµÈ 30%Æú¸®¾ÆÅ©¸±»ê ¿ë¾×¿¡ ÀÇÇÑ ºê¶óÄÏ Àü´Ü°áÇÕ°­µµ´Â ÀλêºÎ½Ä¹ý
¿¡ ÀÇÇÑ °ÍÀÇ ¾à 62% À̾ú´Ù.
4. 0.3¸ôÀÇ È²»êÀÌ Æ÷ÇÔµÈ 30%ÀÇ Æú¸®¾ÆÅ©¸±»ê¿ë¾×°ú 0.6¸ôÀÇ È²»ê°ú 5% ÀÎ»ê ¿ë¾×ÀÌ Æ÷ÇÔ
µÈ 30%ÀÇ Æú¸®¾ÆÅ©¸± »ê¿ë¾×ÀÇ ºê¶óÄÏ Àü´Ü°áÇÕ°­µµ´Â Åë°èÀû À¯ÀÇÂ÷°¡ ¾ø¾ú°í, °¢°¢ Àλê
ºÎ½Ä¹ý¿¡ ÀÇÇÑ °ÍÀÇ 32.9%¿Í 37.4%À̾ú´Ù.
5. ºê¶óÄÏ Á¦°ÅÁßÀÇ ·¹Áø Á¢ÂøÁ¦ ÆÄÀý¾ç»óÀº ÀλêºÎ½Ä¹ýÀÇ °æ¿ì¿¡ ¹ý¶ûÁú-·¹ÁøÁ¢ÂøÁ¦ °æ°è
¸é°ú ºê¶óÄÏ º£À̽º--·¹ÁøÁ¢ÂøÁ¦ °æ°è¸é ÆÄÀýÀÇ È¥ÇÕÇüÀ̾úÀ¸³ª, ½ÇÇè °áÁ¤Çü¼º ¿ë¾×ÀÇ °æ
¿ì¿¡´Â µ¥Ã¼·Î ¹ý¶ûÁú-·¹ÁøÁ¢ÂøÁ¦ °æ°è¸é ÆÄÀýÀ̾úÀ¸¸ç, ¹ý¶ûÁú Ç¥¸é¿¡ ·¹ÁøÁ¢ÂøÁ¦ÀÇ ÀÜ·ù
·®ÀÌ ¸Å¿ì Àû¾ú°í °áÁ¤Àº ·¹ÁøÁ¢ÂøÁ¦ ¼Ó¿¡ ¸Å¸ôµÇ¾î ÆÄÀýµÇ¾ú´Ù.
ÀÌ ½ÇÇèÀÇ °á°ú´Â ÀÌ ½ÇÇè¿¡¼­ »ç¿ëµÈ °áÁ¤Çü¼º¿ë¾×ÀÌ ºê¶óÄÏ Àü´Ü°áÇÕ°­µµ·Î Æò°¡ÇÒ ¶§
¿¡ ÀÓ»óÀû »ç¿ë °¡´É¼ºÀÌ ºÎÀûÇÕÇÔÀ» ½Ã»çÇÑ´Ù.
#ÃÊ·Ï#
The purpose of this study was to compare bracket shear bond strengths of th crystal
growth solutions wi those of the 37% phosphoric acid etch technique. The 4 crystal
growth solutions were made experimentally in th lab, that is (1)30% polyacrylic acid
solution containing 0.3 M sulfuric acid (ES 1), (2)30% polyacrylic acid solution
containing 0.6 M solution acid (ES 2), (3)30% polyacrylic acid solution containing 0.3 M
solution acid and 0.6M lithium sulfate(ES 3), (4)30% polyacrylic acid solution containing
0.3 M solution acid and 5% phosphoric acid (ES 4). The 37% phosphoric acid solution
used as a control. Bovine lower incisor tooth enamel was treated by the above solutions
for 60 sec, washed out for 20 sec with slow water stream, and bonded lower anterior
edgewise bracket with the light curing orthodontic composit resin adhesives. The teeth
bonded brackets were stored in the distilled water at room temperature for 24h, and
followed to test the bracket shear bond strength.
The acid etch technique showed 177.6kg/§² of mean shear bond strength which was
the highest among the enamel treatment solutions. ES 1 shown 58.4 kg/§² of mead
shear bond strength and the of ES 4 showed 66.5 kg/§². There was no significant
difference between the two(p>0.05). Es 2 showed 110.6kg/§² of mean shear bond
strength which was 62.3% of that of acid etch technique. ES 3 showed 131.3kg/§² of
mead shear bond strength which was the highest among experimental crystal growth
solution and which was 74% of that of acid etch technique. The shear bond strengths of
the crystal growth solutions and were significantly lower that that of acid etch
technique(p<0.05). The results suggest that bracket shear bond strength of 30%
polyacrylic acid solution containing 0.3M sulfuric acid and 0.6M lithium sulfate were
showed the highest, it is low for the clinical application of this solution.

Å°¿öµå

°áÁ¤Çü¼º; Æú¸®¾ÆÅ©¸±»ê; ºê¶óÄÏ Àü´Ü°áÇÕ°­µµ; Crystal growth; polyacrylic acid soution; bracket bond shear strength;

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