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TENSILE STRENGTH OF PRE-LIGATURED BUTTON WITH SEVERAL TYPE OF CONTAMINATION IN DIRECT BONDING PROCEDURE WHICH CAN HAPPEN DURING THE SURGICAL EXPOSURE OF UNERUPTED TEETH

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Abstract

°á·Ð
ÀúÀÚ´Â lingual buttonÀ» ligature wire·Î °áÂûÇÏ°í, ÀÌ°ÍÀ» ¼öÁ¾ÀÇ ±³Á¤¿ë Á¢Âø·¹ÁøÀ» ÀÌ
¿ëÇÏ¿© ¼ÒÀÇ ¿µ±¸Ä¡ ¹ý¶ûÁú¸é¿¡ Á¢ÂøÇÏ¿´´Ù. À̶§ ¸î °³ÀÇ ±ºÀ¸·Î ³ª´©¾î ÀÓ»ó Áß¿¡ ¹ß»ýÇÒ
¼ö ÀÖ´Â »ý¸®Àû ½Ä¿°¼ö ¹× Ç÷¾× ¿À¿°À» ½ÃÄ×´Ù. Á¢Âø 3 ÀÏ °æ°úÈÄ ¸¸´É ¹°¼º ½ÃÇè±â·Î ÀÎÀå
°­µµ¸¦ ÃøÁ¤, ºÐ¼®ÇØ º» °á°ú ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. ³× °¡Áö Àç·áÀÇ Á¤»ó ´ëÁ¶±º°£ Æò±Õ°ªÀ» ºñ±³ÇØ º» °á°ú Ortho-One,
TMOrtho-Two,TM Phase ¥±¿¡ ºñÇØ Rely-a-Bond°¡ ¼öÄ¡°¡
³·¾Ò°í, Åë°èÇÐÀû À¯ÀÇÂ÷°¡ ÀÖ¾ú´Ù.(p<0.01)
2. Ortho-One,TM Rely-a-Bond ¿¡¼­ etchant¸¦ »ý¸®Àû ½Ä¿°¼ö·Î ¼¼Ã´ÇÑ ±ºÀÇ Æò±Õ°ªÀº
Á¤»ó ´ëÁ¶±ºÀÇ Æò±Õ°£¿¡ ºñÇÏ¿© °¢°¢ 7.7%, 11.1% °¨¼ÒÇÏ¿´°í Åë°èÇÐÀû À¯ÀÇÂ÷°¡ ÀÖ¾ú´Ù.
(p<0.05)
3 Orthn-Two,TM Phase ¥± ¿¡¼­ etchant¸¦ »ý¸®Àû ½Ä¿°¼ö·Î ¼¼Ã´ÇÑ ±ºÀÇ
Æò±Õ°£Àº Á¤»ó ´ëÁ¶±ºÀÇ Æò±Õ°ª¿¡ ºñÇÏ¿© Åë°èÇÐÀû À¯ÀÇÂ÷°¡ ¾ø¾ú´Ù.
4. Ortho-One,TM Rely-a-Bond, Ortho-Two,TM Phase ¥±ÀÇ
¸ðµç Àç·á¿¡¼­, »êºÎ½Ä¸é¿¡ Ç÷¾×ÀÌ ¿À¿°µÈ ±ºÀÇ Æò±Õ°ªÀº Á¤»ó ´ëÁ¶±ºÀÇ Æò±Õ°ª¿¡ ºñÇÏ¿©
°¢°¢ 60.8%, 56.1%, 603%, 46.0% °¨¼ÒÇÏ¿´°í Åë°èÇÐÀû À¯ÀÇÂ÷°¡ ÀÖ¾ú´Ù. (p<0.01)
5. Ortho-One,TM Rely-a-Bond Àç·á¿¡¼­ »êºÎ½Ä¸éÀ» primer·Î ó¸®ÇÑ ÈÄ Ç÷¾×¿¡ ¿À¿°µÈ
±ºÀÇ Æò±Õ°ªÀº Á¤»ó ´ëÁ¶±º¿¡ ºñÇÏ¿© Åë°èÇÐÀû À¯ÀÇÂ÷°¡ ¾ø¾ú´Ù.
6. Ortho-Two,TM Phase ¥± ¿¡¼­ Àç·á¿¡¼­ »êºÎ½Ä¸éÀ» bonding agent·Î
ó¸®ÇÑ ÈÄ Ç÷¾×¿¡ ¿À¿°µÈ ±ºÀº Á¤»ó ´ëÁ¶±ºÀÇ Æò±Õ°ª°ú ºñ±³ÇÏ¿© °¢°¢ 20.95%, 22.28% °¨
¼ÒÇÏ¿´°í Åë°èÇÐÀû À¯ÀÇÂ÷°¡ ÀÖ¾ú´Ù. (p<0.05) ¶ÇÇÑ ´Ù¾çÇÑ Å©±âÀÇ bonding resin µ¢¾î¸®°¡
Ä¡¸é¿¡ ºÎÂøµÇ¾î ³ªÅ¸³µ´Ù.
º» ¿¬±¸ °á°ú¸¦ Á¾ÇÕÇÏ¿© ÃÖÀûÀÇ ÀÎÀå°­µµ¸¦ ¾ò±â À§ÇÏ¿© ÀÓ»ó ¼ö¼ú½Ã¿¡ ¿°µÎ¿¡ µÎ¾î¾ß
ÇÒ »çÇ×À» Á¤¸®ÇÑ´Ù¸é ´ÙÀ½°ú °°´Ù.
1. ¾î¶°ÇÑ °æ¿ì¶óµµ ¹ý¶ûÁú »êºÎ½Ä¸éÀÇ Ç÷¾× ¿À¿°Àº Â÷´ÜÇØ¾ß ÇÑ´Ù.
2. Rely-a-Bond´Â ÀÓ»ó¿¡ ÇÊ¿äÇÑ ÃÖ¼ÒÀÇ Á¢Âø·ÂÀ» À¯ÁöÇÏ¿´À¸³ª, ¼ö¼úÁß »ç¿ë¿¡´Â ºÎÀûÇÕ
ÇÏ´Ù.
3. Ortho-OneÀº »êºÎ½Ä¸éÀ» ¹°´ë½Å »ý¸®Àû ½Ä¿°¼ö·Î ¼¼Ã´ °ÇÁ¶½Ã ÀÓ»óÀûÀ¸·Î ÃæºÐÇÑ Á¢
Âø°­µµ¸¦ À¯ÁöÇÏ¿´´Ù.
4. Ortho-OneÀÇ primeró¸® ÈÄ Ç÷¾× ¿À¿°½Ã Á¢Âø°­µµÀÇ °¨¼Ò´Â ¾ø¾ú´Ù. ÃâÇ÷Á¶ÀýÀÌ ¾î·Á
À» °æ¿ì, »êºÎ½Ä¸é¿¡ Ortho-OneÀÇ Primer¸¦ °¡´ÉÇÑ »¡¸® µµÆ÷ÇÏ´Â °ÍÀÌ ÃßõµÈ´Ù. primer
µµÆ÷ ÈÄ¿¡´Â Ç÷¾×¿À¿°ÀÌ µÇ´õ¶óµµ Á¢Âø°­µµÀÇ °¨¼Ò´Â ¾øÀ¸¸ç, ¹öÆ°¿¡ primer¸¦ µµÆ÷ÇÏ°í
paste¸¦ ¿Ã¸± ¼ö ÀÖ´Â ÃæºÐÇÑ ½Ã°£À» ¾òÀ» ¼ö ÀÖ´Ù. Ç÷¾× ¿À¿°µÈ primerÇ¥¸éÀº ´Ü¼øÈ÷ ¾ÐÃà
µÈ °ø±â·Î ºÒ¾î³¿À¸·Î ±ú²ýÇÑ primerÇ¥¸éÀ» ´Ù½Ã È®ÀÎ ÇÒ ¼ö ÀÖ´Ù.
4.. ¼ö¼ú½Ã¿¡ ÃâÇ÷ÀÌ ½ÉÇϸé mix typeÀÇ Á¢ÂøÁ¦ÀÎ Ortho-Two, ¿Í Phase ¥±´Â ¹Ù¶÷Á÷ÇÏÁö
¸øÇÏ´Ù. Ç÷¾× ¿À¿°½Ã Á¢Âø°­µµ°¡ Å©°Ô °¨¼ÒÇϸç, Á¢ÂøÀ» ¹æÇØ ÇÏ´Â bonding resinµ¢¾î¸®°¡
Çü¼ºµÈ´Ù.
5. Ligature wire´Â °¡´ÉÇÑ Á÷°æÀÌ Å« °ÍÀ» »ç¿ëÇÑ´Ù.
6. ButtonÀ» ¼±Á¤½Ã¿¡´Â Ä¡¸éÀÇ °î¸éÀ» È®ÀÎÇÏ¿© °¡´ÉÇÑ Ä¡¸éÀÇ contour¿Í À¯»çÇÑ °ÍÀ»
¼±ÅÃÇÑ´Ù. Ä¡¾Æ ¼³¸é¿¡ ºÙÀÏ °æ¿ì flat base¸¦ °í·ÁÇÑ´Ù.
7. Á¢ÂøÈÄ 24½Ã°£ ³»¿¡ °¡Àå ¸¹Àº Á¢Âø°­µµÀÇ Áõ°¡°¡ ÀÖÀ¸³ª ±× ÀÌÈÄ¿¡µµ ¼­¼­È÷ °è¼ÓÇØ
¼­ Áõ°¡ÇϹǷÎ, °¡´ÉÇϸé Ä¡¾Æ °ßÀÎÀº 1ÁÖ ÀÌ»ó °æ°úÈÄ ½ÃÀÛÇÏ´Â °ÍÀÌ ÁÁ´Ù.
#ÃÊ·Ï#
We already know that it is very difficult to obtain an ¡®isolated field¡¯ for direct
bonding during the surgical exposur of unerupted teeth. The aim of this in-vitro study
is to simulate the clinical situation of forced eruption and to evaluate the tensile
strengths of preligatured button with several types of contamination which can happen
during the surgical exposure of unerupted teeth.
Four orthodontic direct bonding systems were used. (Ortho-OneTM,
Rely-a-BondR, Ortho-TwoTM, Phase ¥±R)
Each material was divided into four groups(n=20) : Group 1. (Control, no contamination),
Group 2. (Rinse etching agent with saline instead of water), Group 3. (Blood
contamination of etched surface for 30 seconds), Group 4. (Blood contamination of
primed surface for 30 seconds)
320 bovine anterior permanent teeth were divided into the above mentioned 16 groups.
Enamel surface was flattened and ground under water coolant. Pre-ligatured buttons
were prepared to the same form. (Cut 0.25 ligature wire 10§¯ in length. Twist the
ligature wire 30 times clockwise. Mark the wire 15§® and 35§® points from button.
Make a loop sticking two points together and twist the loop 6 times counterclockwise.)
The boned specimens were stored at 37¡É saline solution for 3 days. Then the tensile
strength of each sample was measured with Instron universal testing machine, crosshead
speed of 0.5§®/min. The following results were obtained :
1. As compared to control groups (Group 1) of each material, Rely-a-Bond had a
significantly lower mean tensile strengths than other material. (p<0.01)
2. In Group 2. of Ortho-One and Rely-a-Bond, the mean tensile strengths decreased
about 7.7% and 11.1%, respectively with statistical significances. (p<0.05)
3. In Group 2. of Ortho-Two and Phase ¥±, the mean tensile strengths did not
decrease.
4. In Group 3. of Ortho-One, Rely-a-Bond, Ortho-Two. and Phase ¥±, the mean
tensile strengths decreased about 60.8%, 56.1%, 60.2%, and 46.0%, respectively with
statistical significances. (p<0.01)
5. In Group 4. of Ortho-One and Rely-a-Bond, the mean tensile strengths did not
decrease.
6. In Group 4. of Ortho-Two and Phase ¥±, the mean tensile strengths were decreased
about 20.95% and 22.28%, respectively with statistical significances. (p<0.01) There were
formations of a hump shaped mass from bonding resin under blood contamination which
disturbed direct bonding procedure.
According to Reynolds, the proper bond strength for clinical manipulation should be at
least 45N or about 4.5Kg.F. According to these results, it can be concluded that
Ortho-One could be used during surgical exposure of unerupted teeth. In any case,
blood contamination of the etched surface should be avoided, but the blood contamination
of primed surface of Ortho-One may not decrease bond strength. Just ¡®blowing-out¡¯
is enough to remove blood from primed surface of Ortho-One. You can verify the clean
surface of the primer of Ortho-One after blowing out the blood contamination.

Å°¿öµå

blood contamination; forced eruption; tensile strength; unerupted teeth; Weibull analysis;

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