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Acid Neutralizing Capacity of Giomer in an Acidic Solution

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¾ÈÇϳª ( Ahn Ha-Na ) - Àü³²´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
±è¼±¹Ì ( Kim Seon-Mi ) - Àü³²´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
ÃÖ³²±â ( Choi Nam-Ki ) - Àü³²´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

º» ¿¬±¸´Â ÀÚÀÌ¿À¸ÓÀÇ »ê¼º¿ë¾×¿¡¼­ ½Ã°£¿¡ µû¸¥ »êÁßÈ­´ÉÀ» Æò°¡ÇÏ°í, »ê¿¡ ³ëÃâµÈ ÀÚÀÌ¿À¸ÓÀÇ Ç¥¸éº¯È­¸¦ °üÂûÇϱâ À§Çؼ­ ½ÃÇàµÇ¾ú´Ù. ½ÇÇ豺À¸·Î´Â ¼öº¹¿ë ÀÚÀÌ¿À¸ÓÀÎ Beautifil II¿Í À¯µ¿¼º ÀÚÀÌ¿À¸ÓÀÎ Beautifil Flow F02, ´ëÁ¶±ºÀ¸·Î ¼öº¹¿ë º¹ÇÕ·¹ÁøÀÎ FiltekTM Z250À» ¼±ÅÃÇÏ¿´°í, ¿øÆÇ°ú °¡·ç ÇüÅ·Π½ÃÆíÀ» Á¦ÀÛÇÏ¿© pH 2.0ÀÇ ¿°»ê ¼ö¿ë¾×°ú È¥ÇÕÇÑ ÈÄ pH °ªÀ» ÃøÁ¤ÇÏ¿´À¸¸ç, ºÐ¸» ÇüÅÂÀÇ ÀÚÀÌ¿À¸Ó´Â »õ·Î¿î ¿°»ê ¿ë¾×°ú ÀçÈ¥ÇÕ ÈÄ pH °ªÀ» ÃøÁ¤ÇÏ¿´´Ù. ¶ÇÇÑ ÁÖ»çÀüÀÚÇö¹Ì°æÀ» ÀÌ¿ëÇÏ¿© ¿øÆÇÇüÅ ½ÃÆíÀÇ Ç¥¸é±¸Á¶ÀÇ º¯È­¸¦ °üÂûÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù. ¿øÆÇ ÇüÅÂÀÇ ½ÇÇè¿¡¼­´Â ¼öº¹¿ë ÀÚÀÌ¿À¸Ó¸¸ÀÌ ½ÇÇè 24½Ã°£ ÀÌÈÄ À¯ÀÇÇÑ pH °ªÀÇ Áõ°¡¸¦ º¸¿´´Ù. ¹Ý¸é, ºÐ¸» ÇüÅÂÀÇ ½ÇÇè¿¡¼­´Â ¼öº¹¿ë, À¯µ¿¼º ÀÚÀÌ¿À¸Ó ¸ðµÎ ÃʱâºÎÅÍ À¯ÀÇÇÑ ¼öÁØÀÇ pH Áõ°¡°¡ º¸¿´À¸¸ç, ¼öº¹¿ë ÀÚÀÌ¿À¸Ó°¡ ´õ ³ôÀº pH Áõ°¡¸¦ º¸¿´´Ù. ºÐ¸» ÇüÅÂÀÇ ÀÚÀÌ¿À¸Ó´Â »õ·Î¿î ¿°»ê¿ë¾×¿¡¼­ ÀÌÀü ½ÇÇè¿¡ ºñÇØ ³·Àº Á¤µµÀÇ pH Áõ°¡¸¦ º¸¿´´Ù. ¶ÇÇÑ, ÃæÀü¿ë ÀÚÀÌ¿À¸ÓÀÇ Ç¥¸é¿¡¼­ ·¹Áø°ú À¯µ¿¼º ÀÚÀÌ¿À¸Ó¿¡ ºñÇØ ´õ ¸¹Àº ºÎ½Ä¼ºÀÇ ±¸Á¶Àû º¯È­°¡ ¹ß»ýÇß´Ù. °á·ÐÀûÀ¸·Î, ÀÚÀÌ¿À¸Ó´Â »êÁßÈ­´ÉÀ» °¡Áö¸ç, ÇÊ·¯ ÇÔ·®ÀÌ ³ôÀº ÃæÀü¿ë ÀÚÀÌ¿À¸Ó´Â À¯µ¿¼º ÀÚÀÌ¿À¸Óº¸´Ù ´õ Å« »êÁßÈ­´ÉÀÌ ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù.

The aim of this study was to evaluate the acid neutralizing capacity and to observe surface changes of giomer in comparison with composite resin, when it comes in contact with an acidic solution. A packable giomer(Beautifil II) and a flowable giomer(Beautifil Flow F02) were used as experimental groups, while a packable composite resin(FiltekTM Z-250) was used as control group. pH values were measured after mixing the specimens of the disc and powder types with a pH 2.0 hydrochloric acid solution, respectively. Also, in the case of powder type giomers used in the earlier experiment, their pH values were measured again after mixing them with a fresh acid solution. Moreover, surface structure changes of disc type specimens were observed by using a scanning electron microscopy(SEM). In the disc type test, the pH values of packable giomer were significantly increased after 24 hours(p < 0.05). In contrast, in the powder type test, the pH values of packable and flowable giomers were dramatically increased within 30 minutes. The pH value of packable giomer, in particular, was higer than that of flowable giomer(p < 0.05). In the repeated neutralizing test, the degree of pH variation was lower than that of the previous neutralizing test(p < 0.05). Erosive changes on the surface of packable giomer were observed to be more than those on composite resin and flowable giomer as well. In conclusion, giomer has a acid neutralizing capacity, when it comes in contact with an acidic solution. Especially, packable giomer with high filler content has a greater acid neutralizing capacity than flowable giomer.

Å°¿öµå

ÀÚÀÌ¿À¸Ó; »êÁßÈ­´É; »êÁßÈ­; »ê¼º¿ë¾×
Giomer; Acid neutralizing capacity; Acid neutralization; Acid solution

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