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Effect of the difference in spectral outputs of the single and dual-peak LEDs on the microhardness and the color stability of resin composites

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±Ç¿ëÈÆ ( Kwon Yong-Hoon ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úÀç·áÇб³½Ç
¹ÚÁ¤±æ ( Park Jeong-Kil ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç

Abstract

¿¬±¸¸ñÀû: ¿©·¯ ±¤°³½ÃÁ¦ ½Ã½ºÅÛ¿¡ ÀÇÇØ È°¼ºÈ­µÇ´Â º¹ÇÕ ·¹ÁøÀ» ±âÁ¸ÀÇ single-peak LED¿Í ÃÖ½ÅÀÇ dual-peak LED·Î ±¤ÁßÇÕÇÏ¿´À» ¶§ÀÇ ´©ÇÁ ¹Ì¼¼ °æµµ¿Í ¼öÁß º¸°ü ÈÄÀÇ »ö ¾ÈÁ¤¼º Â÷À̸¦ ¾Ë¾Æº¸±â À§ÇÑ °ÍÀÌ´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: CamphorquinoneÀÌ ±¤°³½ÃÁ¦·Î Æ÷ÇԵǾî ÀÖ´Â Z100°ú ´Ù¸¥ ±¤°³½ÃÁ¦°¡ Æ÷ÇԵǾî ÀÖ´Â °ÍÀ¸·Î ¾Ë·ÁÁø Tetric Ceram°ú Aelite LS Posterior¸¦ À¯¸®ÆÇ À§¿¡¼­ Å×Ç÷РÁÖÇü(Á÷°æ 8 mm, µÎ²² 2 mm) ³»·Î ÃæÀüÇÏ°í, single-peak LED¿Í dual-peak LED·Î ±¤ÁßÇÕÇÏ¿´´Ù. ÁßÇÕ ÈÄ ´©ÇÁ ¹Ì¼¼ °æµµ¸¦ ÃøÁ¤ÇÏ¿´°í ÇÑ ´Þ ÈÄ »ö º¯È­¸¦ ÃøÁ¤ÇÏ¿´´Ù. ±¤ÁßÇձⰣÀÇ ¹Ì¼¼ °æµµ¿Í »ö º¯È­ Â÷À̸¦ student t-test·Î ºÐ¼®ÇÏ¿´´Ù.

°á°ú: ¸ðµç ·¹Áø¿¡¼­ dual-peak LED·Î ±¤ÁßÇÕÇÏ¿´À» ¶§ ¹Ì¼¼ °æµµ°¡ ³ô°Ô ³ªÅ¸³µ´Ù. »ö ¾ÈÁ¤¼º ¿ª½Ã dual-peak LED·Î ±¤ÁßÇÕÇÏ¿´À» ¶§ ³ô°Ô ³ªÅ¸³µÀ¸³ª Aelite LS Posterior¿¡¼­¸¸ Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÑ Â÷ÀÌ°¡ ÀÖ¾ú´Ù.

°á·Ð: ´Ù¸¥ ±¤°³½ÃÁ¦°¡ Æ÷ÇԵǾî ÀÖ´Â º¹ÇÕ ·¹ÁøÀ» dual-peak LED·Î ±¤ÁßÇÕÇÑ °æ¿ì ¹Ì¼¼ °æµµ¿Í »ö ¾ÈÁ¤¼º¿¡ À־ ´õ ÁÁÀº °á°ú¸¦ ¾òÀ» ¼ö ÀÖ¾ú´Ù.

Objectives: To determine the effect of the spectral output of single and dual-peak light emitting diode (LED) curing lights on the microhardness and color stability of commercial resin composites formulated with camphorquinone and alternative photoinitiators in combination.

Materials and Methods : Three light-polymerized resin composites (Z100 (3M ESPE), Tetric Ceram (Ivoclar Vivadent) and Aelite LS Posterior (Bisco)) with different photoinitiator systems were used. The resin composites were packed into a Teflon mold (8 mm diameter and 2 mm thickness) on a cover glass. After packing the composites, they were light cured with single-peak and dual-peak LEDs. The Knoop microhardness (KHN) and color difference () for 30 days were measured. The data was analyzed statistically using a student¡¯s t-test (p < 0.05).

Results: All resin composites showed improved microhardness when a third-generation dual-peak LED light was used. The color stability was also higher for all resin composites with dual-peak LEDs. However, there was a significant difference only for Aelite LS Posterior.

Conclusions : The dual-peak LEDs have a beneficial effect on the microhardness and color stability of resin composites formulated with a combination of camphorquinone and alternative photoinitiators.

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´Ù¸¥ ±¤°³½ÃÁ¦; ¹Ì¼¼ °æµµ; »ö ¾ÈÁ¤¼º; Ãâ·Â ÆÄÀå
Alternative photoinitiators; Camphorquinone; Color stability; Dual-peak light emitting diode (LED); Microhardness; Spectral outputs

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