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A comparative study on the fit and screw joint stability of ready-made abutment and CAD-CAM custom-made abutment

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±èÁ¾¿í ( Kim Jong-Uk ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
ÇãÀ¯¸® ( Heo Yu-Ri ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
±èÈñÁß ( Kim Hee-Jung ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
Á¤ÀçÇå ( Chung Chae-Heon ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç

Abstract

¿¬±¸ ¸ñÀû: º» ¿¬±¸¿¡¼­´Â ±â¼º Áö´ëÁÖ¿Í ¸ÂÃãÇüCAD-CAM Áö´ëÁÖÀÇ ÀûÇÕ¼º ¹× ³ª»ç »çÀÌÀÇ ¾ÈÁ¤¼º ´ëÇØ ¾Ë¾Æº¸°íÀÚ ÇÑ´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: ¿À½ºÅÛ ÀÓÇöõÆ® ½Ã½ºÅÛÀ» ÀÌ¿ëÇÏ¿´´Ù. µ¿ÀÏȸ»ç¿¡¼­ Á¦ÀÛµÈ ±â¼º Áö´ëÁÖ(Transfer abutment, Osstem Implant Co. Ltd, Busan, Korea) ¹× ¸ÂÃãÇü CAD-CAM Áö´ëÁÖ(CustomFit abutment, Osstem Implant Co. Ltd, Busan, Korea)¿Í ±¹³» ¿ÜÁÖ Á¦ÀÛµÈ ¸ÂÃãÇüCAD-CAM Áö´ëÁÖ(Myplant, Raphabio Co., Seoul, Korea)¸¦ 5°³¾¿ ¼±ÅÃ, Á¦ÀÛÇÏ¿´À¸¸ç ³ª»ç´Â °¢ ȸ»ç¿¡¼­ Á¦°øµÇ´Â °ÍÀ» »ç¿ëÇÏ¿´´Ù. Á¦Á¶»çÀÇ Áö½Ã¿¡ µû¶ó °íÁ¤Ã¼¿Í Áö´ëÁÖ¸¦ 30 NcmÀ¸·Î Á¶ÀÎ ÈÄ Ãʱâ Ç®¸² ÅäÅ©¸¦ 3ȸ ¹Ýº¹ ÃøÁ¤ÇÑ ÈÄ Åë°è ºÐ¼®ÇÏ¿´´Ù(¥á=.05). °íÁ¤Ã¼-Áö´ëÁÖ ¿¬°áü¸¦ ¿¡Æø½Ã ·¹Áø¿¡ ¸Å¸ô ÈÄ ½À½Ä Àý»è ¹× ¿¬¸¶ÇÏ¿© °è¸é »çÀÌÀÇ ÀûÇÕ¼ºÀ» FE-SEMÀ¸·Î °üÂûÇÏ¿´´Ù.

°á°ú:Áö´ëÁÖÀÇ Ãʱâ Ç®¸² ÅäÅ© °ªÀº °¢°¢ ±â¼º Áö´ëÁÖ(Transfer abutment)¿¡¼­ 26.0 ¡¾ 0.30 Ncm, µ¿ÀÏ È¸»ç¿¡¼­ Á¦ÀÛµÈ ¸ÂÃãÇüCAD-CAM Áö´ëÁÖ(CustomFit abutment)¿¡¼­ 26.3 ¡¾ 0.32 Ncm, ¿ÜÁÖ·Î Á¦ÀÛµÈ ¸ÂÃãÇüCAD-CAM Áö´ëÁÖ(Myplant abutment)¿¡¼­ 24.7 ¡¾ 0.67 Ncm¿´´Ù. ±¹³» ¿ÜÁÖ Á¦ÀÛµÈ ¸ÂÃãÇüCAD-CAM Áö´ëÁÖ¿¡¼­ À¯ÀÇÀûÀ¸·Î ³·Àº Ãʱâ Ç®¸² ÅäÅ© °ªÀ» º¸¿´À¸¸ç(P=.027), °íÁ¤Ã¼-Áö´ëÁÖ °è¸é¿¡¼­ º¯¿¬ °£±ØÀÌ °üÂûµÇ¾ú´Ù.

°á·Ð: º» ½ÇÇèÀÇ ÇÑ°è ³»¿¡¼­ ±¹³» ¿ÜÁÖ Á¦ÀÛµÈ ¸ÂÃãÇüCAD-CAM Áö´ëÁÖ´Â µ¿ÀÏ È¸»ç¿¡¼­ Á¦ÀÛµÈ ±â¼º Áö´ëÁÖ³ª ¸ÂÃãÇüCAD-CAM Áö´ëÁÖ¿¡ ºñÇØ ´õ ³·Àº ³ª»ç ¾ÈÁ¤¼º ¹× ÀûÇÕ¼ºÀ» º¸ÀÎ´Ù°í º¼ ¼ö ÀÖ´Ù.

PURPOSE: The purpose of this study was to investigate the fit and screw joint stability between Ready-made abutment and CAD-CAM custom-made abutment.

MATERIALS AND METHODS: Osstem implant system was used. Ready-made abutment (Transfer abutment, Osstem Implant Co. Ltd, Busan, Korea), CAD-CAM custom-made abutment (CustomFit abutment, Osstem Implant Co. Ltd, Busan, Korea) and domestically manufactured CAD-CAM custom-made abutment (Myplant, Raphabio Co., Seoul, Korea) were fabricated five each and screws were provided by each company. Fixture and abutments were tightening with 30Ncm according to the manufacturer's instruction and then preloding reverse torque values were measured 3 times repeatedly. Kruskal-Wallis test was used for statistical analysis of the preloading reverse torque values (¥á=.05). After specimens were embedded into epoxy resin, wet cutting and polishing was performed and FE-SEM imaging was performed, on the contact interface.

RESULTS: The pre-loading reverse torque values were 26.0 ¡¾ 0.30 Ncm (ready-made abutment; Transfer abutment) and 26.3 ¡¾ 0.32 Ncm (CAD-CAM custom-made abutment; CustomFit abutment) and 24.7 ¡¾ 0.67 Ncm (CAD-CAM custom-made abutment; Myplant). The domestically manufactured CAD-CAM custom-made abutment (Myplant abutment) presented lower pre-loading reverse torque value with statistically significant difference than that of the ready-made abutment (Transfer abutment) and CAD-CAM custom-made abutment (CustomFit abutment) manufactured from the same company (P=.027) and showed marginal gap in the fixture-abutment interface.

CONCLUSION: Within the limitation of the present in-vitro study, in domestically manufactured CAD-CAM custom-made abutment (Myplant abutment) showed lower screw joint stability and fitness between fixture and abutment.

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¸ÂÃãÇüCAD-CAM Áö´ëÁÖ; Ãʱâ Ç®¸² ÅäÅ©; ³ª»ç ¾ÈÁ¤¼º; ÀûÇÕ¼º
CAD-CAM custom-made abutment; Pre-loading reverse torque value; Screw joint stability; Fit

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KCI
KoreaMed