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Evaluation of bulk-fill resin composite on the shear bond strength of metal brackets

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¹Ú¹Ì°æ ( Park Mi-Gyoung ) - ºÎ»ê°¡Å縯´ëÇб³ º¸°Ç°úÇдëÇÐ Ä¡±â°øÇаú

Abstract

º» ¿¬±¸´Â ¹úÅ©Çʺ¹ÇÕ·¹ÁøÀÇ ±³Á¤¿ë¸ÞÅ»ºê¶óÄÏ¿¡ ´ëÇÑ Àü´Ü°áÇÕ°­µµ¸¦ Æò°¡ÇÏ¿´´Ù. º» ¿¬±¸¿¡¼­´Â 3Á¾ÀÇ ¹úÅ©Çʺ¹ÇÕ·¹Áø (Filtek Bulk Fill, Tetric N-Ceram Bulk Fill, SonicFill)À» Á¢ÂøÁ¦·Î »ç¿ëÇÏ¿´°í, ´ëÁ¶±ºÀ¸·Î Transbond XT¸¦ »ç¿ëÇÏ¿´´Ù. ±¤Á¶»ç¸¦ À§ÇØ 473 nm ·¹ÀÌÀú (LVI-VA457-100)¿Í 2 Á¾ÀÇ ±¤Á¶»ç±â (Optilux 501, L.E.Demetron)¸¦ »ç¿ëÇÏ¿´´Ù. ±³Á¤¿ëºê¶óÄÏÀ» ¹ß°ÅµÈ »ó¾Ç¼Ò±¸Ä¡¿¡ ºÎÂøÇÏ°í ±¤Á¶»çÇÑ ÈÄ, ±¤ÁßÇÕÀÌ ¿Ï·áµÈ ½Ã·áÀÇ °áÇÕ°­µµ¸¦ ÃøÁ¤ÇÏ°í ÆÄÀý¸éÀ» °üÂûÇÏ¿´´Ù. ±× °á°ú ¸ðµç ±¤Á¶»ç±â±º¿¡¼­ Transbond XT±ºÀÌ ´Ù¸¥ ¹úÅ©Çʺ¹ÇÕ·¹Áø±ºº¸´Ù ³ôÀº °áÇÕ°­µµ¸¦ º¸¿´´Ù (p <0.05). ¹úÅ©Çʺ¹ÇÕ·¹Áø±º¿¡¼­ SonicFill ±ºÀº ´Ù¸¥ ¹úÅ©Çʺ¹ÇÕ·¹Áø±ºº¸´Ù À¯ÀÇÇÏ°Ô ³ôÀº Àü´Ü°áÇÕ°­µµ °ªÀ» º¸¿´´Ù. ±¤Á¶»ç±â±º°£¿¡ °áÇÕ°­µµ´Â À¯ÀÇÇÑ Â÷ÀÌ°¡ ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù (p = 0.061). ARI Á¡¼ö´Â Á¢Âø±º°£¿¡´Â À¯ÀÇÇÑ Â÷ÀÌ°¡ ¹ß»ýÇÏ¿´Áö¸¸ (p <0.001), ±¤Á¶»ç±â±º°£¿¡´Â À¯ÀÇÇÑ Â÷ÀÌ°¡ ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù (p = 0.099). ¸ðµç ±¤Á¶»ç±â±º¿¡¼­ ¹úÅ©Çʺ¹ÇÕ·¹Áø±ºÀº ÀÓ»óÀûÀ¸·Î Çã¿ë°¡´ÉÇÑ °áÇÕ°­µµ (5.9-7.8MPa)¸¦ º¸¿© ±³Á¤¿ëºê¶óÄÏÀ» ºÎÂø½Ã Á¢ÂøÁ¦·Î »ç¿ëµÉ ¼ö ÀÖ´Ù´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù.

This study evaluated the shear bond strength (SBS) and adhesive remnant index (ARI) of bulk-fill resin composites compared to conventional bonding adhesive. One hundred and eighty human teeth were randomly divided into four different adhesive groups: (1) Filtek Bulk Fill, (2) Tetric-N Ceram Bulk Fill, (3) SonicFill, and (4) Transbond XT. These groups were divided into three subgroups by light-curing units (LCU). Orthodontic metal brackets were bonded to the enamel surface using the four different adhesives, and light curing was performed. After specimens were stored for 24 h in distilled water, SBS was measured. Adhesive remnant index (ARI) scores were determined after the failure of orthodontic brackets. For all LCUs, Transbond XT had a higher SBS than bulk-fill resin composites. For all LCUs, the bulk-fill resin composites showed clinically acceptable SBS values. Analysis of variance revealed significant differences between the bulk-fill resin composite groups, with SonicFill having a significantly higher SBS than the other two bulk-fill resin composites (p < 0.05). However, the LCUs had no significant impact on SBS (p = 0 .0 61). ARI s cores were significantly d ifferent among adhesive groups, but ARI scores were not significantly different among LCUs. The SBS of all bulk-fill resin composites was the higher than the recommended SBS of the adhesives (5.9 - 7.8 MPa). In the Filtek Bulk Fill and Tetric-N Ceram groups that showed the lower SBS values, more adhesive remained on the enamel surface. Bulk-fill resin composites can be used clinically as adhesives for orthodontic bracket bonding.

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¹úÅ©ÇÊ º¹ÇÕ·¹Áø; Àü´Ü°áÇÕ°­µµ; Á¢ÂøÁ¦; Å»ºê¶óÄÏ
Bulk-fill resin composite ; shear bond strength ;adhesive; metal bracket

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