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EFFECT OF ULTRASONIC VIBRATION ON ENAMEL AND DENTIN BOND STRENGTH AND RESIN INFILTRATION IN ALL-IN-ONE ADHESIVE SYSTEMS

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Abstract

ÃʱâÀÇ Á¢Âø ½Ã½ºÅÛÀº ¿©·¯ ´Ü°èÀÇ ¼ú½ÄÀ» ÇÊ¿ä·Î ÇÏ¿´À¸¸ç ¼úÀÚÀÇ ±â¼ú°ú Àç·áÀÇ ¼ºÁú¿¡ Å©°Ô Á¿ìµÇ¾úÀ¸³ª ÃÖ±Ù »êºÎ½Ä, priming, adhesive¸¦ Çѹø¿¡ Àû¿ëÇÒ ¼ö ÀÖ´Â all-in-one adhesive systelnÀÌ µîÀåÇÏ¿´´Ù. Ä¡°ú¿¡¼­ÀÇ vibrationÀÇ ÀÌ¿ëÀº Ä¡¼®ÀÇ Á¦°Å ¹× Á¢ÂøÁ¦ÀÇ Á¡µµ¸¦ ³·Ãߴµ¥ ÀÌ¿ëµÇ¾î ¿ÔÀ¸¸ç vibrationÀº Á¢ÂøÁ¦ÀÇ È帧¼ºÀ» Çâ»ó½ÃÄÑ film thickness¸¦ ³·Ãß¾î ¼öº¹¹° ÁÖÀ§ÀÇ ¹Ì¼¼´©ÃâÀ» ÁÙÀ̴µ¥ µµ¿òÀ» ÁØ´Ù. ÀÌ¿¡ ÀúÀÚµéÀº all-in-one adhesive system¿¡¼­ vibrationÀÌ ¹ý¶ûÁú°ú »ó¾ÆÁúÀÇ Á¢Âø°­µµ¿Í ·¹ÁøħÅõ¿¡ ¹ÌÄ¡´Â È¿°ú¸¦ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.
¹ý¶ûÁú ½ÃÆíÀº ¹ß°Å ÈÄ ½Ç¿Â¿¡¼­ 0.1% thymol ¿ë¾×¿¡¼­ º¸°üµÈ 30°³ÀÇ °ÇÀüÇÑ »ç¶÷ÀÇ ´ë±¸Ä¡¸¦ ¹«ÀÛÀ§·Î 10°³¾¿ ¼¼±ºÀ¸·Î ³ª´©°í ±Ù¿ø½É ¹æÇâÀ¸·Î µÎ ºÎºÐÀ¸·Î ºÐ¸®ÇÏ¿© °¢°¢Àº °°Àº Á¢ÂøÁ¦¸¦ »ç¿ëÇÏ°í ÃÊÀ½ÆÄÁøµ¿¿©ºÎ¸¦ ´Ù¸£°Ô ÇÏ¿´°í, ¾ÆÅ©¸± ·¹ÁøÀ» ÀÌ¿ëÇÏ¿© Á÷°æ 1-inchÀÇ PVC°ü¿¡ ¸Å¸ôÇÑ ÈÄ Çù¼³¸éÀÌ ¾ÆÅ©¸±ºÀ°ú µ¿ÀÏÇÑ ³ôÀÌ°¡ µÇµµ·Ï 220-, 600-grit ¿¬¸¶Áö·Î ¼øÂ÷ÀûÀ¸·Î ¿¬¸¶ÇÏ¿´°í ±º´ç 10°³¾¿ ¿©¼¸ ±ºÀ¸·Î ºÐ·ùÇÏ¿´´Ù. 1±º°ú 2±ºÀº Prompt L-Pop(3M-ESPE, Seefeld, Germany), 3±º°ú 4±ºÀº One-Up Bond F(Tokuyama Corp., Tokyo, Japan), 5±º°ú 6±ºÀº AQ bond(Sun Medical Co., Kyoto, Japan)¸¦ Á¦Á¶»çÀÇ Áö½Ã¿¡ µû¶ó µµÆ÷ÇÏ¿´´Ù. 2±º, 4±º, 6±ºÀº ÃÊÀ½ÆÄ Ä¡¼®Á¦°Å±â¸¦ ÀÌ¿ëÇÏ¿© Ä¡¸é¿¡ ´ë°í 15ÃÊ°£ Áøµ¿À» °¡ÇÑ ÈÄ ±¤ÁßÇÕÇÏ¿´´Ù. »ó¾ÆÁú ½ÃÆíÀº Ä¡°üºÎ ¹ý¶ûÁúÀ» Á¦°ÅÇÑ ÈÄ »ó¾ÆÁú¸éÀ» ¾ÆÅ©¸± ºÀ°ú µ¿ÀÏÇÑ ³ôÀÌ°¡ µÇµµ·Ï ÇÏ°í ¹ý¶ûÁú ½ÃÆí°ú µ¿ÀÏÇÏ°Ô Ã³¸®ÇÏ¿´´Ù. ÀÌÈÄ Á÷°æ 2mm, ³ôÀÌ 3mmÀÇ Teflon mold(Ultradent, U.S.A.)¸¦ ÀÌ¿ëÇÏ¿© º¹ÇÕ·¹ÁøÀ» ÃæÀüÇÑ ÈÄ 40Ãʾ¿ µÎ ¹ø¿¡ ³ª´©¾î ±¤ÁßÇÕÇÑ ÈÄ 24½Ã°£µ¿¾È ½Ç¿Â¿¡¼­ Áõ·ù¼ö¿¡ º¸°üÇÏ¿´´Ù. ¿­¼øȯ ½ÃÇàÇÑ ÈÄ, ¸¸´ÉÃøÁ¤±â(Instron 4465)·Î Àü´Ü°áÇÕ°­µµ¸¦ ÃøÁ¤ÇÏ¿´À¸¸ç Resin tagÀÇ ¾ç»óÀ» ºñ±³Çϱâ À§ÇØ °¢ ±ºÀÇ ½ÃÆíÀÇ Ä¡ÁúÀ» ¿ÏÀüÈ÷ ¿ëÇؽÃŲ ÈÄ Ç¥¸éÀ» ÁÖ»çÀüÀÚÇö¹Ì°æ»çÁøÀ¸·Î °üÂûÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. ¹ý¶ûÁú¿¡¼­ ÃÊÀ½ÆÄ Áøµ¿À» °¡ÇÑ ±º(2,4,6±º)Àº °¡ÇÏÁö ¾ÊÀº ±º(1,3,5±º)¿¡ ºñÇØ Æò±Õ Àü´Ü°áÇÕ°­µµ°¡ ³ô°Ô ³ªÅ¸³µ´Ù.
2. »ó¾ÆÁú¿¡¼­ ÃÊÀ½ÆÄ Áøµ¿À» °¡ÇÑ ±º(2,4,6±º)Àº °¡ÇÏÁö ¾ÊÀº ±º(1,3,5±º)¿¡ ºñÇØ Æò±Õ Àü´Ü°áÇÕ°­µµ°¡ ³ô°Ô ³ªÅ¸³µ´Ù. ±×·¯³ª ±× Â÷ÀÌ´Â One-Up Bond F±ºÀ» Á¦¿ÜÇÏ°í´Â Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù.
3. ÀüÀÚ Çö¹Ì°æ °üÂû¿¡¼­ ÃÊÀ½ÆÄ Áøµ¿À» °¡ÇÑ ±º¿¡¼­ ´õ ¸¹Àº ¹ý¶ûÁúÀÇ ¼Ò½Ç°ú »ó¾ÆÁú¿¡¼­ resin tagÀÇ ±æÀÌ°¡ ±æ¾ú°í lateral branchÀÇ ¼öµµ ¸¹ÀÌ °üÂûµÇ¾ú´Ù.
The objective of this study was to apply the vibration technique to reduce the viscosity of bonding adhe¡þsives and thereby compare the bond strength and resin penetration in enamel and dentin achieved with those gained using the conventional technique and vibration technique.
For enamel specimens, thirty teeth were sectioned mesio-distally. Sectioned two parts were assigned to same adhesive system but different treatment (vibration vs. non-vibration). Each specimen was embedded in 1-inch inner diameter PVC pipe with a acrylic resin. The buccal and lingual surfaces were placed so that the tooth and the embedding medium were at the same level. The samples were subsequently pol¡þished silicon carbide abrasive papers. Each adhesive system was applied according to its manufacture s instruction. Vibration groups were additionally vibrated for 15 seconds before curing. For dentin speci¡þmen, except removing the coronal part and placing occiusal surface at the mold level, the remaining pro¡þcedures were same as enamel specimen. Resin composite(Z250. 3M. U.S.A.) was condensed on to the prepared surface in two increments using a mold kit(Ultradent Inc., U.S.A), Each increments was light cured for 40 seconds. After 24 hours in tap water at room temperature, the specimens were thermocycled for 1000cycles. Shear bond strengths were measured with a universal testing machine(Instron 4465, England). To investigate infiltration patterns of adhesive materials, the surface of specimens was exam¡þined with scanning electron microscope.
The results were as follows:
1. In enamel, the mean values of shear bond strengths in vibration groups(group 2,4,6) were greater than those of non-vibration group(group 1,3,5). The differences were statistically significant except AQ bond group.
2. In dentin, the mean values of shear bond strengths in vibration groups(group 2, 4, 6) were greater than those of non-vibration groups(group 1,3,5). But the differences were not statistically significant except One-Up Bond F group.
3. The vibration group showed more mineral loss in enamel and longer resin tag and greater number of lateral branches in dentin under SEM examination.

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ÃÊÀ½ÆÄÁøµ¿; All-in-one adhesive;Àü´Ü°áÇÕ°­µµ;·¹ÁøħÅõ;Ultrasonic vibration;All-in-one adhesive;Shear bond strength;Resin penetration

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