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Dentin bond strength of bonding agents cured with Light Emitting Diode

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Abstract

LED ±¤ÁßÇÕ±â(Elipar FreeLight, 3M-ESPE)¿Í ÇÒ·Î°Õ ±¤ÁßÇÕ±â(VIP Bisco)·Î ±¤Á¶»çÇÑ ¼öÁ¾ÀÇ »ó¾ÆÁú Á¢ÂøÁ¦¿¡ ´ëÇؼ­ »ó¾ÆÁú Àü´ÜÁ¢Âø°­µµ¸¦ ºñ±³ÇÏ¿´´Ù ¶ÇÇÑ À̹ø ¿¬±¸ÀÇ ±¤ÇÐÀû ±Ù°Å¸¦ ¾ò±â À§ÇØ µÎ ±¤ÁßÇÕ±âÀÇ ÆÄÀå¿¡ µû¸¥ ±¤°­µµ¿Í ½ºÆåÆ®·³À» ºñ±³ÇÏ¿´´Ù. À̹ø ¿¬±¸¿¡¼­ »ç¿ëµÈ »ó¾ÆÁú Á¢ÂøÁ¦´Â Scotchbond Multipurpose (3M ESPE), Single Bond (3M ESPE). One-Step (Bisco), Clearfil SE Bond (Kuraray), Adper Prompt (3M ESPE) ÀÌ´Ù. VIP´Â 487 §¬¿¡¼­ ÃÖ´ëÁ¤Á¡À» °¡Áö´Â ³ÐÀº ½ºÆåÆ®·³ÀÇ ºÐÆ÷¸¦ º¸ÀÌ´Â ¹Ý¸é¿¡, Elipar FreeLight´Â 465 §¬¿¡¼­ÀÇ ÃÖ´ëÁ¤Á¡À» Áß½ÉÀ¸·Î Á¼Àº ½ºÆåÆ®·³ÀÇ ºÐÆ÷¸¦ º¸¿´´Ù. Clearfil SE bond¸¦ Á¦¿ÜÇÏ°í Çҷΰհú LED·Î ±¤Á¶»ç ÇÑ °¢ »ó¾ÆÁú Á¢ÂøÁ¦¿¡¼­ »ó¾ÆÁú Àü´ÜÁ¢Âø°­µµ°ªÀÇ À¯ÀǼº ÀÖ´Â Â÷ÀÌ´Â º¸ÀÌÁö ¾Ê¾Ò´Ù (P > 0.05). ÀÌ·¯ÇÑ °á°ú´Â camphoroquinoneÀÇ Èí¼ö½ºÆåÆ®·³°ú LEDÀÇ Á¼Àº ¿µ¿ªÀÇ ½ºÆåÆ®·³»çÀÌ¿¡ °­ÇÑ ¿¬°ü¼ºÀ¸·Î ¼³¸íÇÒ ¼ö ÀÖ´Ù.

This study compared the dentin shear bond strengths of currently used dentin bonding agents that were irradiated with an LED (Elipar FreeLight, 3M-ESPE) and a halogen light (VIP, BISCO). The optical characteristics of two light curing units were evaluated. Extracted human third molars were prepared to expose the occlusal dentin and the bonding procedures were performed under the irradiation with each light curing unit. The dentin bonding agents used in this study were Scotchbond Multipurpose (3M ESPE), Single Bond (3M ESPE), One-Step (Bisco), Clearfil SE bond (Kuraray), and Adper Prompt (3M ESPE), The shear test was performed by employing the design of a chisel-on-iris supported with a Teflon wall. The fractured dentin surface was observed with SEM to determine the failure mode. The spectral appearance of the LED light curing unit was different from that of the halogen light curing unit in terms of maximum peak and distribution. The LED LCU (maximum peak in 465 §¬) shows a narrower spectral distribution than the halogen LCU (maximum peak in 487 §¬). With the exception of the Clearfil SE bond (P < 0.05), each 4 dentin bonding agents showed no significant difference between the halogen light-cured group and the LED light-cured group in the mean shear bond strength (P > 0.05). The results can be explained by the strong correlation between the absorption spectrum of camphoroquinone and the narrow emission spectrum of LED.

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LED ±¤ÁßÇÕ±â;ÇÒ·Î°Õ ±¤ÁßÇÕ±â;»ó¾ÆÁú Á¢ÂøÁ¦;»ó¾ÆÁú Àü´ÜÁ¢Âø°­µµ;½ºÆåÆ®·³;LED;Halogen;Dentin bonding agent;Dentin shear bond strength;Spectrum; Camphoroquinone

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