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Influence of water absorption on flexural strength and elastic modulus in several resinous teeth splinting materials

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¹Ú¹è¿µ ( Park Bae-Young ) - °­¸ª¿øÁÖ´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç
±è¼ö¿¬ ( Kim Soo-Yeon ) - °­¸ª¿øÁÖ´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç
±èÁø¿ì ( Kim Jin-Woo ) - °­¸ª¿øÁÖ´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç
¹Ú¼¼Èñ ( Park Se-Hee ) - °­¸ª¿øÁÖ´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç
Á¶°æ¸ð ( Cho Kyung-Mo ) - °­¸ª¿øÁÖ´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç

Abstract

¸ñÀû: º» ¿¬±¸ÀÇ ¸ñÀûÀº ¼öºÐ Èí¼ö°¡ ¿©·¯ ·¹Áø°è Ä¡¾Æ°íÁ¤ Àç·áÀÇ ±¼°î°­µµ¿Í ź¼º°è¼ö¸¦ ¹ÌÄ¡´Â ¿µÇâÀ» ºñ±³ÇÔÀ¸·Î½á¹°¸®Àû ¼ºÁú¿¡ ´ëÇÑ Á¤º¸¸¦ Á¦°øÇÏ´Â °ÍÀÌ´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: Ä¡¾Æ°íÁ¤¿¡ »ç¿ëÇÏ´Â ·¹ÁøÀ¸·Î LightFix, G-FIX, G-aenial Universal Flo¸¦ ÀÌ¿ëÇß´Ù. °¡·Î 25 mm, ¼¼·Î 2 mm, ³ôÀÌ 2 mmÀÇ ½ÃÆíÀ» °¢ Àç·á´ç Áï½Ã¿ë 15°³°ú ¿¡ÀÌ¡¿ë 15°³¸¦ Á¦ÀÛÇß´Ù. Áï½Ã¿ëÀº 37¨¬C, 100% »ó´ë½Àµµ¿¡ 24½Ã°£ µ¿¾È º¸°üµÆ°í ¿¡ÀÌ¡¿ëÀº 30ÀÏ µ¿¾È 37¨¬C, Áõ·ù¼ö¿¡ º¸°üÇß´Ù. ¸¸´É½ÃÇè±â¸¦ ÀÌ¿ëÇØ ±¼°î°­µµ¿Í ź¼º°è¼ö¸¦ÃøÁ¤Çß°í independent t-test¸¦ ÀÌ¿ëÇØ °¢ ½ÇÇè Àç·áÀÇ 24½Ã°£ ±º°ú 30ÀÏ ±º °£ ºñ±³¸¦ Çß´Ù. ½ÇÇèÀç·á °£ÀÇ ºñ±³´Â oneway ANOVA test·Î ºÐ¼®Çß°í 95% À¯ÀÇ ¼öÁØÀ¸·Î Scheffe¡¯s test¸¦ ÀÌ¿ëÇØ »çÈÄ °ËÁ¤Çß´Ù.

°á°ú: º» ¿¬±¸ÀÇ °á°ú LighFix±º¿¡¼­´Â ¿¡ÀÌ¡ ÈÄ¿¡ ±¼°î°­µµ¿Í ź¼º°è¼ö°¡ À¯ÀÇÇÏ°Ô °¨¼ÒÇß°í G-FIX±º¿¡¼­´Â ¿¡ÀÌ¡ÈÄ¿¡ ±¼°î°­µµ¿Í ź¼º°è¼ö¿¡ À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù. G-aenial Universal Flo±º¿¡¼­´Â ±¼°î°­µµ´Â À¯ÀÇÇÏ°Ô °¨¼ÒÇßÀ¸³ªÅº¼º°è¼ö´Â À¯ÀÇÇÑ º¯È­°¡ ¾ø¾ú´Ù. ÇÑÆí ±¼°î°­µµ¿Í ź¼º°è¼ö´Â 24½Ã°£ ±º, 30ÀÏ ±º ¸ðµÎ LightFix°¡ °¡Àå ³·Àº ¼öÄ¡, Gaenial Universal Flo°¡ °¡Àå ³ôÀº ¼öÄ¡¸¦ º¸¿´´Ù.


°á·Ð: ¾î¶² ·¹ÁøÀÇ ±¼°î°­µµ¿Í ź¼º°è¼ö´Â ±¸°­È¯°æ¿¡¼­ ¿¡ÀÌ¡½Ã º¯È­ÇÒ ¼ö ÀÖÀ¸¹Ç·Î µ¿¿äÄ¡ °íÁ¤À» ¸ñÀûÀ¸·Î ·¹ÁøÀ»¼±ÅÃÇÒ ¶§ À̸¦ °í·ÁÇØ¾ß ÇÑ´Ù.

Purpose: The purpose of this study was to compare flexural strength and elastic modulus of several splinting materials dependent on water absorption.

Materials and Methods: Three different materials; LightFix, G-FIX, G-aenial Universal Flo; were used in this study. Thirty rectangular bar specimens (25 ¡¿ 2 ¡¿ 2 mm) of each materials were prepared. Fifteen specimens of each materials were stored in 100% relative humidity atmosphere, 37¡ÆC for 24 hours. The other specimens were stored in distilled water, 37¡ÆC for 30 days. Flexural strength and elastic modulus were calculated using Universal testing machine. One-way ANOVA and Scheffe¡¯s post hoc test at 95% level of significance were used on all test results.

Results: In LightFix, flexural strength and elastic modulus were significantly decreased after aging. In G-FIX, there was no significant change in flexural strength and elastic modulus after aging. In Gaenial Universal Flo, flexural strength was significantly decreased, but elastic modulus did not change significantly. Statistical analysis reveals that flexural strength and elastic modulus increased in the order of LightFix, G-FIX, G-aenial Flo in both 24 hours and 30 days.

Conclusion: It could be deduced from this study that flexural strength and elastic modulus of some resins could be changed when it aged in oral environment. Thus this should be considered when choosing a resin to perform a resin-bonded splint.

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¿¡ÀÌ¡; ź¼º°è¼ö; ±¼°î°­µµ; °íÁ¤; Ä¡¾Æ µ¿¿ä
aging; elastic modulus; flexural strength; splint; tooth mobility

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