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COMPARISON OF COMPRESSIVE STRENGTH AND SURFACE MICROHARDNESS BETWEEN FLOWABLE COMPOSITE RESIN AND GIOMER

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±èÁ¾¼ö ( Kim Jong-Soo ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

º» ¿¬±¸ÀÇ ¸ñÀûÀº À¯µ¿¼º ÀÚÀÌ¿À¸ÓÀÎ Beautifil flow¿Í À¯µ¿¼º º¹ÇÕ·¹ÁøÀÎ FiltekTM Z350, Z350XTÀÇ ¾ÐÃà°­µµ¿Í Ç¥¸é ¹Ì¼¼°æµµ¸¦ ºñ±³ Æò°¡ÇÏ´Â °ÍÀ̾ú´Ù. °¢°¢ÀÇ Àç·á¸¦ »ç¿ëÇÏ¿© 15°³ÀÇ ½ÃÆíÀ» Á¦ÀÛÇÏ¿´´Ù. ¸¸´É½ÃÇè±â¸¦ »ç¿ëÇÏ¿© ÃÊ ´ç 1 mm Ⱦ´Ü ¼Óµµ ÇÏ¿¡¼­ ¾ÐÃà°­µµ¸¦ ÃøÁ¤ÇÏ¿´À¸¸ç, Ç¥¸é ¹Ì¼¼°æµµ´Â º¸¾Ð ½Ã°£ 10ÃÊ Á¶°ÇÇÏ¿¡¼­ 4.9 NÀÇ ÈûÀ» °¡ÇØ ºñÄ¿½º °æµµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. ¾ÐÃà °­µµ ÃøÁ¤ °á°ú 2±ºÀÎ FiltekTM Z350XT´Â 218.7 ¡¾ 18.4 MPa·Î °¡Àå ³ôÀº °ªÀ» º¸¿´°í, 1±ºÀÎ FiltekTM Z350Àº 205.5 ¡¾ 27.1 MPa·Î ³ªÅ¸³µ´Ù. 3±ºÀÎ Beautifil flow F00´Â 176.5 ¡¾ 30.3 MPaÀ̾úÀ¸¸ç, 4±ºÀÎ Beautifil flow F10ÀÇ ¾ÐÃà °­µµ´Â 173.4 ¡¾ 26.2 MPaÀ̾ú´Ù. 2±ºÀÌ 3±º°ú 4±º¿¡ ´ëÇØ Åë°èÇÐÀû À¯ÀÇÂ÷¸¦ º¸¿´´Ù(p < 0.05). Ç¥¸é ¹Ì¼¼ °æµµ ÃøÁ¤°ªÀº 2±º FiltekTM Z350XT°¡ 39.1 ¡¾ 2.1·Î °¡Àå ³ôÀº °ªÀ», 4±º Beautifil flow F10°¡ 27.9 ¡¾ 1.8 À¸·Î ´ÙÀ½À¸·Î ³ô¾Ò°í, 3±º Beautifil flow F00°¡ 23.1 ¡¾ 1.1, 1±º FiltekTM Z350ÀÌ 20.4 ¡¾ 0.9·Î ÃøÁ¤µÇ¾ú´Ù. ¸ðµç ±º °£¿¡ Åë°èÇÐÀû À¯ÀÇÂ÷¸¦ º¸¿´´Ù(p < 0.05). °á·ÐÀûÀ¸·Î, À¯µ¿¼º ÀÚÀÌ¿À¸ÓÀÇ ¾ÐÃà°­µµ´Â º¹ÇÕ·¹Áø¿¡ ºñÇØ ³·Áö¸¸, Ç¥¸é ¹Ì¼¼°æµµ´Â ºñ½ÁÇÑ ¾ç»óÀ» º¸¿´´Ù. ÀÚÀÌ¿À¸ÓÀÇ ¾ÐÃà °­µµ°¡ º¸¿ÏµÈ´Ù¸é ÀÓ»ó¿¡¼­ º¹ÇÕ ·¹ÁøÀÇ ÁÁÀº ´ëüÀç·Î »ç¿ëµÉ ¼ö ÀÖÀ» °ÍÀ¸·Î »ç·áµÇ¾ú´Ù.

The aim of this study was to compare the compressive strength and the surface microhardness of Beautifil flow (Shofu, Kyoto, Japan) with FiltekTM Z350, Z350XT (3M ESPE, USA). Fifteen specimens from each material were fabricated for testing. Compressive strength was measured by using a universal testing machine at a crosshead speed of 1 mm/min. Surface microhardness values were measured by using Vickers hardness tester under 4.9 N load and 10 seconds dwelling time. The compressive strength of Group 2 FiltekTM Z350XT shows the highest value as 218.7 ¡¾ 18.4 MPa and Group 1 FiltekTM Z350 was 205.5 ¡¾ 27.1 MPa. Group 3 Beautifil flow F00 was 176.5 ¡¾ 30.3 MPa, and Group 4 Beautifil flow F10 was 173.4 ¡¾ 26.2 MPa. The compressive strength of Group 2 is higher than Group 3 and 4 (p < 0.05). The surface microhardness of Group 2 FiltekTM Z350XT shows the highest value as 39.1 ¡¾ 2.1 and Group 4 Beautifil flow F10 was 27.9 ¡¾ 1.8. And Group 3 Beautifil flow F00 was 23.1 ¡¾ 1.1, Group 1 FiltekTM Z350 was 20.4 ¡¾ 0.9. There was a statistical significant difference in surface microhardness between all groups (p < 0.05). In conclusion, the compressive strength of giomer was below the level of flowable composite resin. However, the surface microhardness of giomer is comparable to that of flowable composite resin. Giomer would be the good alternative to composite resin, if there is improvement of the compressive strength of giomer.

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ÀÚÀÌ¿À¸Ó; ¾ÐÃà°­µµ; ¹Ì¼¼°æµµ; º¹ÇÕ·¹Áø
Giomer; Compressive strength; Microhardness; Composite resin

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