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Retention of CAD/CAM Metal Copings Cemented on Short Titanium Abutments with Different Cements

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Abstract

½Ã¸àÆ® À¯Áö ÀÓÇöõÆ® ÁöÁö ¼öº¹¹°Àº Ä¡°ú Ä¡·á¿¡ ÀÏ»óÀûÀ¸·Î »ç¿ëµÈ´Ù. ÀÓÇöõÆ®¿Í Áö´ëÁÖ ³ª»ç¿¬°áÀÇ ¾ÈÁ¤ÀûÀÎ °ß°íÇÔ°ú °ñÀ¯ÇÕ ÀÓÇöõÆ®ÀÇ ³ôÀº »ýÁ¸À²·Î ÀÎÇØ ³ôÀº °­µµ¸¦ °¡Áø ½Ã¸àÆ®ÀÇ »ç¿ëÀÌ Á¡Â÷ ´Ã¾î³ª°í ÀÖ´Ù. ±×·¯³ª CAD/CAMÀ» ÀÌ¿ëÇÏ¿© Á¦ÀÛÇÑ ±Ý¼Ó ÄÚÇÎÀÇ À¯Áö·Â¿¡ ´ëÇØ ÀÌ¿ëÇÒ ¼ö ÀÖ´Â ÀÓ»ó ÀÚ·á°¡ ¾ø´Ù. ³× Á¾·ùÀÇ ½Ã¸àÆ®¸¦ ÀÌ¿ëÇÏ¿© ƼŸ´½ Áö´ëÁÖ¿Í CAD/CAMÀ» ÀÌ¿ëÇÏ¿© Á¦ÀÛÇÑ ±Ý¼Ó ÄÚÇÎÀÇ À¯Áö·ÂÀ» Æò°¡ÇÏ´Â °Í°ú ½Ã¸àÆ® À¯Áö·Â¿¡ ´ëÇÑ sandblastingÀÇ È¿°ú¸¦ ¾Ë¾Æº¸°íÀÚ ÇÔÀÌ´Ù. 40°³ÀÇ Æ¼Å¸´½ Áö´ëÁÖ ºí·Ï(Innovium, ¼¼¶óÁª¹ÙÀÌ¿À½Ã½º, ´ëÇѹα¹)À» Á¦ÀÛÇÏ¿© ³× ±×·ìÀ¸·Î ³ª´©¾ú´Ù. 40°³ÀÇ ±Ý¼Ó ÄÚÇÎÀ» CAD/CAMÀ» ÀÌ¿ëÇÏ¿© Á¦ÀÛÇÏ°í ±Ý¼Ó ÄÚÇÎÀÇ ±³ÇÕ¸é »ó¹æºÎ¿¡ À¯Áö·Â Å×½ºÆ®¸¦ À§ÇØ ±¸¸ÛÀ» Çü¼ºÇÏ¿´´Ù. ³× Á¾·ùÀÇ ½Ã¸àÆ®´Â Fujicem(Fuji, Japan), Maxcem Elite(Kerr, USA), Panavia F2.0(Kurarary, Japan), Superbond C&B(Sunmedical, Japan)ÀÌ´Ù. ±Ý¼Ó ÄÚÇΰú ƼŸ´½ Áö´ëÁÖ¸¦ Á¦Á¶»çÀÇ Áö½Ã´ë·Î ½Ã¸àÆ® È¥ÇÕÇÏ¿© ÇÕÂøÇÏ°í 100% ½Àµµ ÇÏ¿¡ 37µµ¿¡¼­ 24½Ã°£ µ¿¾È º¸°ü ÈÄ À¯Áö·Â Å×½ºÆ®ÇÏ¿´´Ù. À¯Áö ½ÇÆа¡ ¹ß»ýÇÏ´Â ÈûÀ» newtonÀ¸·Î ±â·ÏÇÏ°í ½ÇÆÐÀÇ ¾ç»ó ¶ÇÇÑ ±â·ÏÇÏ¿´´Ù. À¯Áö·ÂÀÇ Æò±Õ°ú Ç¥ÁØ ÆíÂ÷¸¦ ANOVA¿Í Paired t-test ·Î Åë°èºÐ¼®ÇÏ¿´´Ù. Panavia F2.0ÀÌ Fujicem°ú Maxcem Eliteº¸´Ù Åë°èÀûÀ¸·Î À¯ÀÇÇÏ°Ô ³ôÀº À¯Áö·ÂÀ» º¸¿´´Ù(p<0.05). SandblastingÀÌ ¸ðµç ½Ã¸àÆ®¿¡¼­ À¯ÀÇÇÏ°Ô À¯Áö·ÂÀ» Áõ°¡½ÃÄ×´Ù(p<0.05). À¯Áö·Â ½ÇÆÐÀÇ ¾ç»óÀº ´ëºÎºÐÀÇ ½Ã¸àÆ®°¡ ±Ý¼Ó ÄÚÇÎ ³»ºÎ¿¡ ³²¾ÆÀÖ´Â Á¢Âø¼º ½ÇÆп´´Ù. º» ¿¬±¸ÀÇ ÇÑ°è ³»¿¡¼­ Panavia F2.0 ÀÌ FujicemÀ̳ª Maxcem Eliteº¸´Ù Åë°èÀûÀ¸·Î À¯ÀÇÇÏ°Ô Å« À¯Áö·ÂÀ» º¸¿´°í(p<0.05), Fujicem°ú Maxcem Elite´Â À¯Áö·ÂÀÇ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù. Sandblasting󸮴 ¸ðµç ½ÇÇ豺¿¡¼­ À¯Áö·ÂÀÇ Çâ»óÀ» º¸¿´´Ù. µû¶ó¼­ ÀÓÇöõÆ® Áö´ëÁÖ¿¡ ÇÕÂøµÈ ±Ý¼Ó ÄÚÇÎÀÇ À¯Áö·ÂÀº Ç¥¸é °ÅÄ¥±â¿Í ½Ã¸àÆ®ÀÇ Á¾·ù¿¡ ¿µÇâÀ» ¹Þ´Â´Ù.

State of problem: Cement-retained implant-supported prostheses are routinely used in dentistry. The use of high strength
cements has become more popular with the increasing confidence in the stability of the implant-abutment screw connection and the high survival rates of osseointegrated implants. No clinical data on retention of metal copings using CAD/CAM. To evaluate retention of metal copings using CAD/CAM system bonded to short titanium abutment with four different cements and compare retentive strength of metal copings with sandblasting or without sandblasting before cementation. Forty titanium abutment blocks were fabricated and divided into 4 groups of 10 samples each. Forty metal copings with occlusal hole to allow for retention testing were fabricated using CAD/CAM technology. The four cements were Fujicem(Fuji, Japan), Maxcem Elite(Kerr, USA), Panavia F2.0(Kurarary, Japan) and Superbond C&B(Sunmedical, Japan). The copings were cemented on the titanium abutment according to manufacture¡¯s recommendation. All samples were stored for 24h at 37oC in 100% humidity and tested for retention using universal testing machine(Instron) at a crosshead speed of 1.0mm/min. Force at retentive failure was recorded in Newton. The mode of failure was also recorded. Means and standard deviations of loads at failure were analyzed using ANOVA and Paired t-test. Statistical significance was set at P<0.05. Panavia F2.0 provided significantly higher retentive strength than Fujicem, Maxcem Elite(P<0.05). Sandblasting significantly increased bond strength(P<0.05). The mode of failure was cement remaining principally on metal copings. Within the limitation of this study, Panavia F2.0 showed significantly stronger retentive strength than Fujicem, Maxcem Elite(p<0.05). The Ranking order of the cements to retain the copings was Panavia F2.0, Fujicem = Maxcem Elite. Sandblasting significantly increased bond strength(P<0.05). The retentive strength of metal copings on implant abutment were influenced by surface roughness and type of cements.

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·¹Áø ½Ã¸àÆ®;À¯Áö;ÀÓÇöõÆ®;CAD/CAM
Retention;CAD/CAM;Resin cement; Implant

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