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MICRO-TENSILE BONDING STRENGTH OF REGIONAL PRIMARY MOLAR DENTIN

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À¯Á¤Àº, ÃÖ¿µÃ¶, ÃÖ¼ºÃ¶, ¹ÚÀçÈ«,
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À¯Á¤Àº ( Yoo Jung-Eun ) - ¼­¿ïÀ§»ýÄ¡°úº´¿ø
ÃÖ¿µÃ¶ ( Choi Young-Chul ) - °æÈñ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
ÃÖ¼ºÃ¶ ( Choi Sung-Chul ) - °æÈñ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
¹ÚÀçÈ« ( Park Jae-Hong ) - °æÈñ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

º» ¿¬±¸´Â À¯±¸Ä¡ »ó¾ÆÁúÀÇ °¢±â ´Ù¸¥ ºÎÀ§(Ç¥ÃþºÎ, ½ÉÃþºÎ, Ä¡°æºÎ)¿¡¼­ º¹ÇÕ·¹Áø Á¢ÂøÁ¦ÀÇ Á¢Âø°­µµ¸¦ ºñ±³, Æò°¡Çϱâ À§ ÇÏ¿© ÀÓ»ó¿¡¼­ ÈçÈ÷ »ç¿ëÇÏ°í ÀÖ´Â ¼­·Î ´Ù¸¥ 4Á¾ÀÇ Á¢Âø¹æ½Ä(3-step total etch: 1±º, 2-step total etch: 2±º, 2-step self-etch: 3±º, all-in-one: 4±º)À» Àû¿ëÇÏ°í º¹ÇÕ ·¹Áø (Light-CoreTM Core Build-Up Composite)À» ÀûÃþÇÑ ÈÄ, ¹Ì¼¼ÀÎ ÀåÁ¢Âø°­µµ¸¦ ºñ±³ÇÏ¿´À» ¶§ ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù. 1. Á¢Âø¹æ½Ä°£ÀÇ ºñ±³¿¡¼­ ·¹ÁøÀÇ Á¢Âø¹æ½Ä¿¡ µû¸¥ »ó¾ÆÁú °¢ ºÎÀ§¿¡¼­ÀÇ ¹Ì¼¼ÀÎÀåÁ¢Âø°­µµ´Â Á¦ 1±ºÀÌ Ç¥ÃþºÎ¿¡¼­ ¶Ñ·Ç ÀÌ ³ô¾ÒÀ¸³ª(p<0.05) 2, 3, 4±ºÀº ºÎÀ§¿¡ µû¸¥ Â÷ÀÌ°¡ ¾ø¾ú´Ù. 2. ºÎÀ§º° ¹Ì¼¼ÀÎÀåÁ¢Âø°­µµ¸¦ ºñ±³ÇÏ¿© º¸¾ÒÀ» ¶§ »ó¾ÆÁú Ç¥ÃþºÎ¿¡¼­ÀÇ ¹Ì¼¼ÀÎÀåÁ¢Âø°­µµ´Â ·¹ÁøÀÇ Á¢Âø ¹æ½Ä°£¿¡ Â÷ÀÌ °¡ ¾ø¾úÀ¸³ª, ½ÉÃþºÎ¿¡¼­´Â 2±º, 3±º, 4±º ¹× 1±ºÀÇ ¼øÀ¸·Î ³ªÅ¸³µ°í(p<0.05), Ä¡°æºÎ¿¡¼­´Â 2±º°ú 3±ºÀÌ 1±º°ú 4±º¿¡ ºñÇÏ¿© ÇöÀúÈ÷ ³ô¾Ò´Ù(p<0.05).

The purpose of this study was to evaluate the micro-tensile bond strength (¥ìTBS) of four luting resin to regional dentin of human primary teeth. Dentin from non-carious primary molars were prepared from different regions (s, superficial dentin; d, deep dentin; c, cervical dentin), and divided into groups based on anatomical locations and types of luting resins (Scotchbond Multi-purpose : SB ; One-Step : OS ; AdheSE Bond : ASE ; G-Bond : GB) : SB-s, SB-d, SB-c; OS-s, OS-d, OS-c; ASE-s, ASE-d, ASE-c ; GB-s, GB-d, GB-c. Luting resins were used according to the manufacturers¡¯ instructions, to bond Light-CoreTM Core Build-Up Composite) to the exposed dentin specimens in the light-curing mode. After storage for 1 day, ¥ìTBS was tested at a cross-head speed of 1 mm/min. Data were analyzed with T-test and two-way ANOVA. The bonding interface and fractography analyses were performed with SEM. The results were as follows : 1. ¥ìTBS to superficial dentin was significantly higher than to deep dentin for SB(p<0.05). But there were no significant differences in regional ¥ìTBS among OS, ASE, GB(p>0.05). 2. There were no significant differences in ¥ìTBS to superficial dentin among each groups. But, in deep dentin, ¥ìTBS of SB-d was significantly lower than those of OS-d, ASE-d, and GB-d(p<0.05). ¥ìTBS of OS-d was significantly higher than those of GB-d(p<0.05), but there were no significant differences in ¥ìTBS of ASEd. There were no significant differences among ¥ìTBS of ASE-d, OS-d, and GB-d.

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Micro-tensile bonding strength;primary tooth;composite resin;dentin adhesives

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