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Deviations of Implant Position between Pre- and Post-operation in Computer-guided Template-based Implant Placement

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Abstract

Computer-guided systemÀº ¼ú Àü¿¡ ÀÓÇöõÆ® À§Ä¡¸¦ °èȹÇÏ°í ÀÌ¿Í ÀÏÄ¡Çϵµ·Ï ±¸°­ ³»¿¡ ÀÓÇöõÆ®¸¦ ½Ä¸³ÇÒ¼ö ÀÖ°Ô ÇÏ´Â ¹æ¹ýÀÌ´Ù. ÇÏÁö¸¸ ÀÌ·¸°Ô ÀÓÇöõÆ®¸¦ ½Ä¸³ÇÑ´Ù ÇÒÁö¶óµµ ½ÇÁ¦ ¸Å½ÄµÈ ÀÓÇöõÆ®ÀÇ À§Ä¡´Â ¿ø·¡ °èȹÇÏ¿´´ø À§Ä¡¿Í Â÷ÀÌ°¡ ÀÖÀ» ¼ö ÀÖ´Ù. ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº ½ÇÁ¦ ÀÓ»ó¿¡¼­ computer guided systemÀ» ÀÌ¿ëÇÏ¿© ÀÓÇöõÆ®¸¦ ½Ä¸³ÇÑ È¯ÀÚµéÀÇ °æ¿ì °èȹÇÑ À§Ä¡¿Í ½ÇÁ¦ ½Ä¸³µÈ ÀÓÇöõÆ® »çÀÌ¿¡ ¹ß»ýÇÏ´Â º¯À§·®ÀÇ ¹üÀ§¸¦ ¾Ë¾Æº¸°í ±× ÀÓ»óÀû ÀûÇÕ¼ºÀ» Æò°¡ÇÏ´Â °ÍÀÌ´Ù. ¡®NobelGuide¡¯ system (Nobel Biocare AB, Goteborg, Sweden)À» ÀÌ¿ëÇÏ¿© Branemark MK ¥² Groovy RP (Nobel Biocare AB, Goteborg, Sweden)ÀÓÇöõÆ® ½Ä¸³À» ½ÃÇà ¹ÞÀº ´Ù¼¸ ¸íÀÇ È¯ÀÚ¸¦ ¼±Á¤ÇÏ¿´´Ù. ¼ö¼ú¿ë ÇüÆÇ¿¡ Áö´ëÁÖ À¯»çü¸¦ ¿¬°áÇÑ ÈÄ ¼ú Àü ÃøÁ¤ ¸ðÇüÀ» Á¦ÀÛÇÏ¿´°í ÃÖÁ¾ º¸Ã¶¹° Á¦ÀÛ ½Ã ÃÖÁ¾ ÀλóÀ» äµæÇÏ¿© ¼ú ÈÄ ÃøÁ¤ ¸ðÇüÀ» Á¦ÀÛÇÏ¿´´Ù. µÎ ÃøÁ¤ ¸ðÇüÀÇ CT ¹æ»ç¼± »çÁøÀ» ÃÔ¿µ ÈÄ 3Â÷¿øÀûÀ¸·Î ÀçÇöÇÏ¿´°í ÀçÇöµÈ ¸ðµ¨ »ó¿¡¼­ ½Ä¸³µÈ ÀÓÇöõÆ® À§Ä¡¸¦ ÁöÁ¤ÇÏ¿´´Ù. °¢ ÀÓÇöõÆ®´Â ÀÓÇöõÆ® °æºÎ¿Í ÷´ÜÀÇ Áß½ÉÁ¡À» ¿¬°áÇÏ¿© ÀÓÇöõÆ® ÃàÀ» ¼³Á¤ÇÏ¿´À¸¸ç µÎ Ãà °£ÀÇ °¢µµ°¡ ÃøÁ¤µÇ¾ú´Ù. ÀÓÇöõÆ® °£ °Å¸®´Â °¢ ÀÓÇöõÆ®ÀÇ °æºÎ¿¡¼­, ¼³Á¤µÈ ÀÓÇöõÆ® ÃàÀÌ Áö³ª°¡´Â Áß½ÉÁ¡ °£ÀÇ °Å¸®¸¦ ÃøÁ¤ÇÏ¿´´Ù. ÃÑ 5¸í ȯÀÚÀÇ 58°³ ºÎÀ§ÀÇ ÀÓÇöõÆ® °£ ¼ú Àü°ú ¼ú ÈÄ ÀÓÇöõÆ® °Å¸®¿Í °¢µµ º¯À§·®ÀÌ ±â·ÏµÇ¾úÀ¸¸ç Æò±Õ ¹× ÃÖ´ë º¯À§°ªÀ» »êÃâÇÏ¿´´Ù. ¼ú Àü°ú ¼ú ÈÄ ÀÓÇöõÆ® À§Ä¡ °£ °Å¸®ÀÇ º¯À§·®Àº Æò±Õ 0.41 mm¿´°í ÃÖ´ë 1.7 mmÀÇ ¹üÀ§ ÇÏ¿¡ ÀÖ¾ú´Ù. ¼ú Àü°ú ¼ú ÈÄ ÀÓÇöõÆ® °£ À§Ä¡ÀÇ °¢µµÀÇ º¯À§·®Àº Æò±Õ 1.99¡Æ¸¦ ³ªÅ¸³ÂÀ¸¸ç ÃÖ´ë °¢µµ º¯À§·®Àº 6.7¡Æ¸¦ ³ªÅ¸³»¾ú´Ù. ¼ú Àü °èȹµÈ ÀÓÇöõÆ®¿Í ¼ú ÈÄ ½Ä¸³µÈ ÀÓÇöõÆ® °£ÀÇ ±æÀÌ¿Í °¢µµ¿¡ µû¸¥ Æò±Õ º¯À§·®Àº computer-guided implant systemÀ» ½ÇÁ¦ ÀÓ»ó¿¡ Àû¿ëÇÏ´Â µ¥ ÀÖ¾î Å« ¹®Á¦°¡ Á¸ÀçÇÏÁö ¾Ê°í ¡®¼öµ¿Àû ÀûÇÕ(passive fit)¡¯À» ¾ò±â¿¡ ¹«¸®°¡ ¾øÀ» Çã¿ë °¡´ÉÇÒ ¸¸ÇÑ °ªÀ» ³ªÅ¸³Â´Ù.

With a development of implant restoration technique, there are increasing use of computer-guided system for edentulous patients. It was carried out simulated operation based on CT information about patient¡¯s bone quantity, quality and anatomical landmark. However, there are some difference between the programmed implant and post-operative implant about it¡¯s position. If the deviation was severe, it could happen a failure of ¡¯passive fit¡¯ and not suited for path of implant restoration. The aim of this presentation is to evaluate about a degree of deviations between programmed implant and post-operative implant. Five patients treated by ¡¯NobelGuide¡¯ system (Nobel Biocare AB, Gteborg, Sweden) in Department of Prosthodontics, Inha University were included in this study. The patients were performed CT radiograph taking and intra-oral impression taking at pre-operation. Based on CT images and study model, surgical stent was produced by NobelBiocareTM. To fabricated a pre-operative study model, after connected lab analog to surgical template, accomplished a pre-operative model using type 4 dental stone. At final impression, a post-operative study model was fabricated in the conventional procedures. Each study model was performed CT radiograph taking. Based on CT images, each implant was simulated in three dimensional position using software (Procera Software Clinical Design Premium, version 1.5; Nobel Biocare AB). In 3D simulated model, length and angulation between each implant of both pre- and post-operative implants were measured and recorded about linear and angular deviation between pre-and post-operative implants. A total of 24 implants were included in this study and 58 inter-implant sites between each implant were measured about linear and angular deviations. In the linear deviation a mean deviation of 0.41 mm (range 0~1.7 mm) was reported. In the angular deviation, a mean deviation was (range ). It appears that the both linear and angular mean deviation value were well acceptable to application of computer-guided implant system.

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Computer guided system;ÀÓÇöõÆ®;º¯À§·®;CT ¹æ»ç¼±
Computer-guided system;Implant;Deviation;CT radiograph

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