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Er,Cr:YSGG Á¶»ç°¡ º¹ÇÕ·¹Áø ¼öº¹ÀÇ ¹Ì¼¼ÀÎÀå °áÇÕ°­µµ¿¡ ¹ÌÄ¡´Â ¿µÇâ

THE EFFECT OF Er,Cr:YSGG IRRADIATION ON MICROTENSILE BOND STRENGTH OF COMPOSITE RESIN RESTORATION

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¼ÕÁ¤Çý, ¹ÚÁ¤±æ, Ç㺹, ±èÇöö,
¼Ò¼Ó »ó¼¼Á¤º¸
¼ÕÁ¤Çý ( Son Jeong-Hye ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç
¹ÚÁ¤±æ ( Park Jeong-Kil ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç
Ç㺹 ( Hur Bock ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç
±èÇöö ( Kim Hyeon-Cheol ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Á¸Çб³½Ç

Abstract

ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº »ó¾ÆÁú Áö°¢°ú¹ÎÁõ ¸ðµåÀÇ Er,Cr:YSGG Á¶»ç°¡ º¹ÇÕ·¹Áø ¼öº¹¹°ÀÇ ¹Ì¼¼ÀÎÀå °áÇÕ°­µµ¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Æò°¡ÇÏ´Â °ÍÀÌ´Ù. 20°³ÀÇ ¹ß°ÅµÈ ´ë±¸Ä¡¸¦ »ç¿ëÇÏ¿© Er,Cr:YSGG ·¹ÀÌÀú Àû¿ë À¯¹«¿Í »ç¿ëµÈ Á¢ÂøÁ¦ ½Ã½ºÅÛ(Optibond FL°ú Clearfil SE bond), »êÀÇ Àû¿ë ½Ã°£(15ÃÊ¿Í 20ÃÊ)¿¡ µû¶ó ¿©¼¸ ±×·ìÀ¸·Î ³ª´©¾ú´Ù. ³ëÃâµÈ ±³ÇÕ¸é »ó¾ÆÁú¿¡ ·¹ÀÌÀú Á¶»ç ÈÄ Á¢ÂøÁ¦¸¦ µµÆ÷ÇÏ°í º¹ÇÕ·¹ÁøÀ¸·Î ¼öº¹ÇÏ¿´´Ù. 24½Ã°£ µ¿¾È ½Ç¿ÂÀÇ Áõ·ù¼ö¿¡ º¸°ü ÈÄ °¢ ±×·ì ´ç 12°³ÀÇ ½ÃÆíÀ» ÁغñÇÏ¿´´Ù. ¸ðµç ½ÃÆíÀÇ ¹Ì¼¼ÀÎÀå °áÇÕ°­µµ¸¦ ÃøÁ¤ÇÏ°í ÆÄÀý ¾ç»óÀ» °üÂûÇÏ¿´´Ù. ´õºÒ¾î ·¹ÀÌÀú¸¦ Á¶»çÇÑ ½ÃÆí°ú Á¶»çÇÏÁö ¾ÊÀº ½ÃÆíÀ» ÁÖ»çÇö¹Ì°æÀ» ÀÌ¿ëÇÏ¿© °üÂûÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù. 1. ·¹ÀÌÀú¸¦ Á¶»çÇÑ ±×·ìÀº ·¹ÀÌÀú¸¦ Á¶»çÇÏÁö ¾ÊÀº ±×·ìº¸´Ù ³·Àº ¹Ì¼¼ÀÎÀå °áÇÕ°­µµ¸¦ ³ªÅ¸³»¾ú´Ù. 2. ·¹ÀÌÀú Á¶»ç À¯¹«¿Í °ü°è¾øÀÌ, Optibond FLÀÌ Clearfil SE bondº¸´Ù ³ôÀº ¹Ì¼¼ÀÎÀå °áÇÕ°­µµ¸¦ ³ªÅ¸³ÂÀ¸¸ç, Optibond FLÀ» »ç¿ëÇßÀ» ¶§ »êºÎ½Ä ½Ã°£ÀÌ 20ÃÊÀÎ °æ¿ì°¡ 15ÃÊÀÎ °æ¿ìº¸´Ù ´õ ³ôÀº °ªÀ» ³ªÅ¸³»¾ú´Ù. 3. ·¹ÀÌÀú¸¦ Á¶»çÇÑ »ó¾ÆÁúÀÇ SEM »çÁøÀº °ü°£»ó¾ÆÁúº¸´Ù °üÁÖ»ó¾ÆÁúÀÌ ´õ µÎµå·¯Á® º¸À̸ç, »ó¾Æ¼¼°üÀÌ ¿­·ÁÀÖÀ¸¸ç µµ¸»ÃþÀº °üÂûµÇÁö ¾Ê¾Ò´Ù.

The purpose of this study was to evaluate the effect of Er,Cr:YSGG laser irradiation with hypersensitivity mode on microtensile bond strength of composite resin. Twenty extracted permanent molars were randomly assigned to six groups, according to the irradiation of Er,Cr:YSGG laser, adhesive system (Optibond FL or Clearfil SE bond) and application time of etchant (15 sec or 20 sec). Then composite resin was build up on each conditioned surface. The restored teeth were stored in distilled water at room temperature for 24 h and twelve specimens for each group were prepared. All specimens were subjected to microtensile bond strength and the fracture modes were evaluated. Also, the prepared dentin surface and laser irradiated dentin surface were examined under SEM. The results were as follows: 1. The microtensile bond strength of laser irradiated group was lower than that of no laser irradiated group. 2. Regardless of laser irradiation, the microtensile bond strength of Optibond FL was higher than that of Clearfil SE bond. And the microtensile bond strength of 20 sec etching group was higher than that of 15 sec etching group when using Optibond FL. 3. The SEM image of laser irradiated dentin surface showed prominent peritubular dentin, opened dentinal tubules and no smear layer.

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Er;Cr:YSGG ·¹ÀÌÀú;¹Ì¼¼ÀÎÀå °áÇÕ°­µµ;º¹ÇÕ·¹Áø ¼öº¹
Er;Cr:YSGG laser;Three-step total-etch;Two-step self-etch;Microtensile bond strength;Composite resin restoration

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