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Influences of Various Acidic Aqueous Solutions on the Opening of Dentinal Tubules and the Shear Bond Strength of Hema Based Dentin Bonding agent

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Abstract

°á·Ð
ÀλêÀÌ¿ÜÀÇ »ê¼º¼ö¿ë¾×ÀÌ »ó¾ÆÁú°áÇÕ¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Æò°¡ÇÏ´Â °ÍÀÌ º» ¿¬±¸ÀÇ ¸ñÀûÀ̾ú
´Ù. Àλê, ÇÇ·çºó»ê, Áú»ê, ¿Á»ì»êµîÀÇ »ê¼º¿ë¾×°ú EDTA¿¡ ±Û¸®½Å, ¶óÀ̽Å, NPG, ferric
oxalate, ±×¸®°í aluminum nitrate¸¦ È¥ÇÕÇÏ¿© ¸ðµÎ 13°¡ÁöÀÇ ½Ã¾àÀ» Á¦Á¶ÇÏ¿´´Ù. ½Ã¾àµéÀÇ
pH¸¦ ÃøÁ¤ÇÑ µÚ, »ó¾ÆÁú°ú Á¢Ã˽ÃÄÑ, »ó¾ÆÁú Ç¥¸é¿¡¼­ °³±¸µÈ »ó¾Æ¼¼°üÀÇ ÇüŸ¦ ÀüÀÚÇö¹Ì
°æÀ¸·Î °üÂûÇÏ°í ½ÇÇèÀûÀ¸·Î Á¦Á¶µÈ HEMA°è »ó¾ÆÁú Á¢ÂøÁ¦ÀÇ Àü´Ü°áÇÕ°­µµ¸¦ ÃøÁ¤ÇÏ¿©
ºñ±³ÇÑ °á°ú ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. ±âÁ¸ÀÇ Àλ꿡 ºñÇؼ­ ÇÇ·çºó»êÀÇ pH°¡ ³ô¾ÒÀ¸¸ç, »êºÎ½Ä¿¡ ÀÇÇÑ Å»È¸°¡ ÀûÀº °ÍÀº
EDTA°è ¹°ÁúÀ̾ú°í, ±Û¸®½Å°ú ¶óÀ̽ÅÀº ¹Ì¾àÇÑ »ê¼ºÁßÈ­È¿°ú°¡ ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
2. ½ÇÇ豺Áß¿¡¼­ °¡Àå ³ôÀº Àü´Ü°áÇÕ°­µµ¸¦ º¸ÀÎ °ÍÀº 10% ÇÇ·çºó»êÀ¸·Î¼­ ÀÌ°ÍÀÇ pH´Â
ÀλêÀÇ °Í¿¡ ºñÇØ ³ô¾Ò´Ù.
3. Àλê, Áú»ê, ÇÇ·çºó»ê¿¡ NPG¸¦ ÷°¡ÇÑ °æ¿ì¿¡´Â Àü´Ü°áÇÕ°­µµÀÇ °¨¼Ò¸¦ º¸ÀÌÁö ¾Ê¾Ò
´Ù.
4. ¸ðµç ½ÇÇ豺À» ´ë»óÀ¸·Î ÇÏ¿´À» ¶§´Â pH¿Í Àü´Ü°áÇÕ°­µµ°£¿¡ »ó°ü¼ºÀÌ ¾ø¾úÀ¸³ª, µ¿ÀÏ
ÇÑ »ê¼º¼ö¿ë¾×¿¡¼­´Â pHÀÇ Áõ°¡¿¡ µû¶ó Àü´Ü°áÇÕ°­µµ°¡ °¨¼ÒµÇ¾ú´Ù.
5. Áú»ê¿¡ NPG¸¦ È¥ÇÕÇÑ °æ¿ì¿Í Àλ꿡 ±Û¸®½ÅÀ» È¥ÇÕÇÑ °æ¿ì ±×¸®°í ÇÇ·çºó»ê¿¡ ¶óÀ̽Å
À» È¥ÇÕÇÑ °æ¿ì¿¡´Â »ó´çÈ÷ ³ôÀº Àü´Ü°áÇÕ°­µµ¿Í ÇÔ²² »ó¾Æ¼¼°üÀ» Æó¼âÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ
´Ù.
ÀÌ»óÀÇ ¿¬±¸°á°ú·Î ¹Ì·ç¾î º¸¾Æ ±âÁ¸ÀÇ ÀλêºÎ½ÄÁ¦¿¡ ºñÇÏ¿© ÇÇ·çºó»êÀ» ÀÌ¿ëÇÒ °æ¿ì ´õ
¿í ¿ì¼öÇÑ °á°ú¸¦ ¾òÀ» ¼ö ÀÖÀ» °ÍÀ¸·Î »ç·áµÇ¸ç, NPG¿Í ±Û¸®½Å ±×¸®°í ¶óÀ̽ŵîÀº Àü´Ü°á
ÇÕ°­µµ¸¦ °¨¼Ò½ÃÅ°Áö ¾Ê´Â ¹üÀ§³»¿¡¼­ »ó¾Æ¼¼°üÀ» Æó¼âÇÏ¿© »ó¾ÆÁú Áö°¢°ú¹ÎÁõÀ» À¯¹ß½ÃÅ°
Áö ¾Ê´Â ¾àÁ¦·Î »ç¿ëµÉ ¼ö ÀÖÀ» °ÍÀ¸·Î »ý°¢µÈ´Ù.

This study was planned to evaluate the effect of acidic aqueous solutions unlike
phosphoric acid on the dentin bonding. Acids such as phosphoric acid, pyruvic acid,
oxalic acid, nitric acid, and EDTA were mixed with glycine, lysine, NPG, ferric oxalate
or aluminum nitrate. 13 kinds of solutions were prepared, and its pH were measured.
Observations of shapes of orifices of dentical tubules on the external surface of dentin
treated with experimental solutions and measurements of shear bond strengths between
HEMA based dentin bonding agent and dentin treated were done.
Following results and conclusion were drawn :
1. pH of pyruvic acid solutions were higher than that of traditional phosphric acid,
EDTA showed the least decalcification of dentin, and glycine and lysine exhibited the
buffer effects.
2. The highest shear bond strength was confined on 10% pyruvic acid group.
3. Incorporation of NPG into phosphoric acid, nitric acid, pyruvic acid did not induce
the decrease of shear bond strength.
4. Co-relation between pH and shear bond strength was not confirmed, however in
groups from a acid, the increase of pH made the decrease of shear bond strength.
5. Nitric acid containing NPG, phosphoric acid containing glycine, and pyruvic acid
containing lysine showed the closing of orifices of dentinal tubules without the decrease
of shear bond strength.
It could be assumed that pyruvic acid is excellant one than traditional phosphoric acid,
and that NPG, glycine and lysine can be used as closing agent for dentinal tubules
without the loss of shear bond strength, and a desensitizing agent.

Å°¿öµå

dentin; etch; dentinal tubule; HEMA; bond strength;

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