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Effect of powder-liquid ratios and powder colors on color stability of 4-META / MMA-TBB resin after immersion in coffee

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ÃÖÀ¯¸®³ª ( Choi Yoorina ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇк´¿ø Ä¡°úº¸Á¸Çб³½Ç
Àå¼­Áø ( Jang Seo-Jin ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç
¹Ú¼öÁ¤ ( Park Su-Jung ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç

Abstract

º» ¿¬±¸ÀÇ ¸ñÀûÀº 4-methacryloxyethyl trimellitate anhydride (4-META) / methyl methacrylate (MMA) & tri-n-butylborane (TBB) resinÀ» Ä¿ÇÇ¿¡ ħÀüÇßÀ» ¶§ ¼­·Î ´Ù¸¥ ºÐ¸»-¾× ºñÀ²°ú ºÐ¸»ÀÇ »öÀÌ »ö ¾ÈÁ¤¼º¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ¾Ë¾Æº¸´Â °ÍÀÌ´Ù. ½ÇÇ豺(Bondfill SB)Àº ºÐ¸»/¾× ºñÀ²(0.8:1 / 1:1 / 1.2:1, Áú·® %)°ú ºÐ¸»ÀÇ »ö(light / medium)ÀÇ Á¶ÇÕ¿¡ µû¶ó ¼³Á¤µÇ¾ú°í, ±¤ÁßÇÕÇü º¹ÇÕ ·¹Áø(Filtek Z350 XT flowable) ÀÌ ´ëÁ¶±ºÀ¸·Î »ç¿ëµÇ¾ú´Ù. ÃÑ 7°³ ±º(n = 8 for color difference, n = 10 for translucency parameter)ÀÇ µð½ºÅ© ¸ð¾ç ½ÃÆíÀº 4ÁÖ µ¿¾È Ä¿ÇÇ¿¡ ħÀüµÇ¾ú´Ù. ½ÃÆíÀÇ »öÀº ±âÁØÁ¡, 1ÀÏ, 1ÁÖ, 2ÁÖ, 3ÁÖ, 4ÁÖ ÈÄ¿¡ °¢°¢ ºÐ±¤ ±¤µµ°è(spectrophotometer)¸¦ ÀÌ¿ëÇÏ¿© ÃøÁ¤µÇ¾ú´Ù. »öÂ÷(color difference, ¥ÄE)¿Í ¹ÝÅõ¸íµµ Â÷ÀÌ(changes in translucency parameter, ¥ÄTP)´Â Åë°èÀûÀ¸·Î ÀÏ¿øºÐ»êºÐ¼® ¹× Tukey »çÈÄ °ËÁ¤À» ÀÌ¿ëÇØ ºÐ¼®ÇÏ¿´´Ù. ºÐ¸»ÀÇ »öÀÌ ¹ÌÄ¡´Â ¿µÇâÀº µ¶¸³Ç¥º» T °ËÁ¤À» »ç¿ëÇÏ¿© Æò°¡ÇÏ¿´´Ù(¥á = 0.05). ½ÇÇ豺ÀÇ ¥ÄE °ªÀº ÀÓ»óÀûÀ¸·Î ¹Þ¾ÆµéÀÏ ¼ö ÀÖ´Â ¼öÁØÀ̾ú´ø °Í¿¡ ºñÇØ(¥ÄE < 3.3), ´ëÁ¶±ºÀº ħÀü 1ÁÖºÎÅÍ 3.3 ÀÌ»óÀÇ ¥ÄE °ªÀ» º¸¿´´Ù. TP °ªÀº 9.58¿¡¼­ 13.28 »çÀÌ¿¡ ºÐÆ÷ÇÏ¿´´Ù. 4ÁÖ ÈÄ ¥ÄTP °ªÀº ´ëÁ¶±ºÀ» Á¦¿ÜÇÏ°í´Â 1.0 À̳»¿¡ Á¸ÀçÇÏ¿´´Ù. °á·ÐÀûÀ¸·Î, ÀÚ°¡ ÁßÇÕÇü º¹ÇÕ ·¹ÁøÀº º» ½ÇÇèÀÇ ±â°£ µ¿¾È Ä¿ÇÇ¿¡ ħÀü ½Ã, ¼­·Î ´Ù¸¥ ºÐ¸»-¾× ºñÀ²°ú ºÐ¸»ÀÇ »ö¿¡ °ü°è¾øÀÌ ÈǸ¢ÇÑ »ö ¾ÈÁ¤¼ºÀ» º¸¿´´Ù.

The aim of this study was to evaluate the color stability of 4-methacryloxyethyl trimellitate anhydride (4-META) / methyl methacrylate (MMA) & tri-n-butylborane (TBB) resin with different powder-liquid (P/L) ratios and powder colors after immersion in coffee. Experimental groups (Bondfill SB) were classified by the P/L ratio (0.8:1 / 1:1 / 1.2:1, weight [wt] %) and color of the powder (light / medium). Light-cured resin composite (Filtek Z350 XT flowable) was used as a control group. Each disk-shaped specimen of 7 groups (n = 8 for color difference, n = 10 for translucency parameter [TP]) was immersed in a staining solution of coffee for 4 weeks. The color of the specimen was measured at the time of baseline, 1 day, 1 week, 2 weeks, 3 weeks, and 4 weeks with a spectrophotometer. The color difference (¥ÄE) and changes in translucency parameter (¥ÄTP) were statistically analyzed by one-way analysis of variance (ANOVA), followed by Tukey¡¯s post-hoc test. Independent t-test was applied to evaluate the effect on the colors of the powder (¥á = 0.05). The values of color difference (¥ÄE) of the experimental groups were within the clinically acceptable threshold (¥ÄE < 3.3), whereas control group showed values over 3.3 after 1 week of immersion. The values of TP ranged from 9.58 to 13.28. The differences of TP (¥ÄTP) between baseline and 4 weeks were less than 1.0, except in the control group. Conclusively, self-cured resin composite showed excellent color stability in coffee for the period of this study regardless of different P/L ratios and powder colors.

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ÀÚ°¡ÁßÇÕÇü º¹ÇÕ·¹Áø; 4-META/MMA-TBB; »ö ¾ÈÁ¤¼º; ¹ÝÅõ¸íµµ
Self-cured resin composite; 4-META/MMA-TBB; Color stability; Translucency parameter

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