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The effect of acidic drinks on the surface of tooth-colored restorative materials

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±è¿µÁø ( Kim Young-Jin ) - °æºÏ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

¹ý¶ûÁú ħ½ÄÀÇ º´ÀÎ Áß¿¡¼­ ½ÄÀ̽À°üÀº ¸¹Àº °ü½ÉÀ» ¹Þ¾Æ¿Ô°í ƯÈ÷ »ê¼ºÀ½·áÀÇ À½¿ëÀÌ ¸¹Àº ÁÖÀǸ¦ ²ø¾î¿Ô´Ù. »ê¼ºÀ½·áÀÇ ±Þ¼ÓÇÑ ¼Òºñ·® Áõ°¡´Â Ä¡¾Æ»Ó¸¸ ¾Æ´Ï¶ó Ä¡¾Æ»ö ¼öº¹Àç·áÀÇ Ç¥¸é¿¡µµ ¸¹Àº ¿µÇâÀ» ¹ÌÄ¥ °ÍÀ¸·Î »ý°¢µÈ´Ù.
µû¶ó¼­ º» ¿¬±¸´Â ¾î¸°À̵éÀÌ ºñ±³Àû ÀÏ»óÀûÀ¸·Î Á¢ÇÏ´Â »ê¼ºÀ½·á Áß °¡Àå º¸ÆíÈ­µÈ 3Á¾À» ¼±ÅÃÇÏ¿© Ä¡¾Æ»ö ¼öº¹Àç·áÀÇ ³ëÃâ½Ã°£¿¡ µû¸¥ Ç¥¸éÀÇ º¯È­¸¦ Á¶»çÇÒ ¸ñÀûÀ¸·Î ½ÃÇàµÇ¾ú´Ù. Resin-modified glass-ionomer, polyacid-modified composite resin, composite resinÀ» 0.9% NaCl, Äݶó, ¿À·»Áö Á꽺, ½ºÆ÷Ã÷ À½·áÀÇ °¢ 4°³ ±ºÀ¸·Î ³ª´©¾î ÀúÀåÇÏ¿´´Ù. ÀúÀå Àü°ú ÀúÀå ÈÄ 1ÀÏ, 1-,2-,3-,4-ÁÖ¿¡ Ç¥¸é°­µµ ¹× Ç¥¸éÁ¶µµ¸¦ ÃøÁ¤ÇÏ¿´°í ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. »ê¼ºÀ½·á¿¡ ÀúÀåÇßÀ» °æ¿ì composite resinÀ» Á¦¿ÜÇÑ Ä¡¾Æ»ö ¼öº¹ÀçµéÀº Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÑ Ç¥¸é°­µµ¿Í Ç¥¸éÁ¶µµÀÇ º¯È­¸¦ º¸¿´´Ù(p<0.05).
2. Ç¥¸é°­µµ ¹× Ç¥¸éÁ¶µµÀÇ º¯È­´Â resin-modified glass-ionomer, polyacid-modified composite resin composite resin ¼øÀ¸·Î Å©°Ô ³ªÅ¸³µ´Ù.
3. ÄÝ¶ó³ª ¿À·»Áö Á꽺º¸´Ù ½ºÆ÷Ã÷ À½·á¿¡¼­ Ç¥¸éº¯È­´Â ´õ Å©°Ô ³ªÅ¸³µ´Ù.
4. »ê¼ºÀ½·á¿¡ ÀúÀåÇÑ ±ºÀÇ SEM ÃÔ¿µ¿¡¼­ resin-modified glass-ionomer, polyacid-modified composite resinÀÇ °æ¿ì ÃæÀüÁ¦ÀÇ »ó½ÇÀÌ °üÂûµÇ¾úÀ¸¸ç ƯÈ÷ resin-modified glass-ionomerÀÇ °æ¿ì ½ÉÇÑ ±Õ¿­ÀÌ °üÂûµÇ¾ú´Ù.

Among the etiologic factors of enamel corrosion, daily intake has been considered with a profound interest, especially the intake of acidic drinks. It is thought that the rapid consumption of acidic drinks will not only results in the affection to the teeth but also to the surface of the tooth-colored restorative materials.
Therefore, the puopose of this study is to examine the alterations occurred in the surface of the tooth-colored materials according to the exposed time, with 3 most common acidic drinks in contact with daily life. Resin-modified glass-ionomer, polyacid-modified composite resin, composite resin were immersed on 0.9% NaCl, Coke, orange juice, sports beverages as 4 groups in each. The surface hardness and the surface roughness of specimens were measured with following methods: before immersion, 1 day after immersion, 1-,2-,3-,4- weeks after immersion. Results were as follows.
1. Tooth-colored restorative materials, with the exception of composite resin, showed statistically significant changes in surface hardness and roughness when immersed on acidic drinks(p<0.05).
2. The degree of change in surface hardness and roughness occurred as follows, in order of severity from greatest to least resin-modified glass-ionomer, polyacid-modified composite resin, composite resin.
3. Sports beverages resulted in greater alterations to surfaces than Coke and orange juice.
4. In the SEM image of the groups immersed in acidic drinks, resin-modified glass-ionomer and polyacid-modified composite resin showed loss of filer. Severe cracks were observed, especially on the resin-modified glass-ionomer.

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Acid drinks;Tooth-colored restorative materials;Surface hardness;Surface roughness;Exposed time

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