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Effect of the concentration of lithium, magnesium, potassium sulfate in polycarboxylic acid on the properties of erystals formed on enamel surface

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Abstract

°á·Ð
ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº °áÁ¤¼ºÀå¿ë¾×Áß¿¡ ¸®Ä¡¿ò, ¸¶±×³×½·, Æ÷Ÿ½· Ȳȭ¹°À» ÷°¡ÇÏ´Â °ÍÀÌ °á
Á¤ÀÇ ±æÀÌ¿¡ ¾î¶»°Ô ¿µÇâÀ» ¹ÌÄ¡¸ç, °áÁ¤ÀÇ ±æÀÌ°¡ Àü´Ü°áÇÕ°­µµ¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â°¡¸¦ È®ÀÎ
ÇÏ´Â °ÍÀ̾ú´Ù. Æú¸®Ä«º¹½Ç»ê°ú Ȳ»êÀ» È¥ÇÕÇÏ¿© ±âº»¿ë¾×À¸·Î ÇÏ°í, ¼¼°¡Áö Ȳȭ¹°À» 0.1%
ºÎÅÍ 0.5%±îÁö ¹«°Ôºñ·Î ÷°¡ÇÏ¿´´Ù. °áÁ¤ÀÇ ±æÀÌ´Â ÀüÀÚÇö¹Ì°æÀ¸·Î °üÂûÇÏ¿´°í, Àü´Ü°áÇÕ
°­µµ¸¦ ÃøÁ¤ÇÏ¿© µÑ°£ÀÇ »ó°ü¼ºÀ» ºÐ¼®ÇÏ¿´´Ù.
Àü´Ü°áÇÕ°­µµ´Â Ȳȭ¹°ÀÇ Á¾·ù¿¡ ºñ·¡ ÇÔ·®¿¡ ÀÇÇØ ´õ Å« ¿µÇâÀ» ¹Þ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸
¸ç, magnesium sulfate´Â Áõ·®¿¡ µû¶ó Àü´Ü°áÇÕ°­µµ°¡ °¨¼Ò ÈÄ Áõ°¡µÇ¾ú°í, °áÁ¤ÀÇ ±æÀÌ°¡
±æ¼ö·Ï Àü´Ü°áÇÕ°­µµ°¡ ³ô°Ô ³ªÅ¸³µ´Ù. Lithium sulfate´Â °áÁ¤ÀÇ ±æÀ̸¦ Áõ°¡½ÃÅ°´Â È¿°ú°¡
ÀÖ¾ú°í, magnesium sulfate´Â °áÁ¤ÀÇ ±æÀ̸¦ °¨¼Ò½ÃÄ×À¸¸ç, potassium sulfate´Â °áÁ¤ÀÇ ±æ
ÀÌ¿¡ ¿µÇâÀ» ¹ÌÄ¡Áö ¾Ê¾ÒÀ¸³ª, °áÁ¤ÀÇ ±æÀÌ°¡ ¼¼°¡Áö Ȳȭ¹°Áß¿¡¼­ °¡Àå ±æ¾ú´Ù.
Ȳȭ¹°ÀÇ Ã·°¡³óµµ·Î ¹ý¶ûÁú Ç¥¸éÀÇ °áÁ¤±æÀ̸¦ Á¶ÀýÇÒ ¼ö ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, °áÁ¤
ÀÇ ±æÀÌ¿¡ µû¶ó Àü´Ü°áÇÕ°­µµ°¡ º¯È­µÇ´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. ÇâÈÄ ¿¬±¸¿¡¼­´Â ³ôÀº °á
ÇÕ°­µµ¸¦ º¸ÀÏ ¼ö ÀÖ´Â °áÁ¤ÇüÅ¿¡ ´ëÇÑ Á¤ÀÇ¿Í Á¶¼ºÀÇ Á¶Á¤ÀÌ ÇÊ¿äÇÏ´Ù

The purpose of this study was to confirm the effects of incorporation of lithium,
magensium, potassium sulfate on the length of crystals, and the correlation between the
crystal length and the shear bond strength. Basic solution was a mixture of
polycarboxylic acid and diluted sulfuric acid, three sulfates were added into them with
the concentrations between 0.1% and 0.5% by weight ratio. The length of crystals were
measured on the scanning electron microscope, and the shear bond strength were
measured on the universal testing machine. Regression test between crystal length and
shear bond strength were done. Shear bond strength were influenced by the
concentration factor than the factor of sulfates kinds. In magnesium sulfate experimental
groups, the shear bond strength were decreased and then increased again by the rise of
concentration, and the longer crystals showed the higher shear bond strength. Lithium
sulfate exhibited the efficacy of lengthening the crystals, magnesium sulfate can be used
as a material reducing the length of crystal, however potassium sulfate showed
no-effect on the length of crystal.
It could be concluded that the length of crystal can be controlled by the concentration
of sulfates, and that the shear bond strength were influenced with the length of crystal.
So the related can be controlled by the concentration of sulfates, and that the shear
bond strength and the controlled composition of crystal growth solutions are needed.

Å°¿öµå

Composite; Enamel; Crystal growth solution; Shear bond strength; SEM; Sulfateion;

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