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Accuracy assessment of implant placement using a stereolithographic surgical guide made with digital scan

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°­¼¼ÇÏ ( Kang Se-Ha ) - ¿¬¼¼´ëÇб³ ¿øÁÖÀÇ°ú´ëÇÐ Ä¡°úº¸Ã¶°ú
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ÀüÇüÅ ( Jeon Hyong-Tae ) - ºÎ»ê µð¿ÀÀÓÇöõÆ®¿¬±¸¼Ò
¾È¼ºÈÆ ( An Sung-Hun ) - ºÎ»ê µð¿ÀÀÓÇöõÆ®¿¬±¸¼Ò

Abstract

¸ñÀû: ÀλóÀç¿Í ¼®°í¸ðÇüÀ» »ç¿ëÇÏÁö ¾Ê°í µðÁöÅÐ ¿µ»ó ¸¸À» »ç¿ëÇÏ¿© Á¦ÀÛµÈ ¼ö¼ú°¡À̵带 ÀÌ¿ëÇÑ Ä¡°ú ÀÓÇöõÆ® ¼ö¼úÀÇ Á¤È®µµ¸¦ Æò°¡ÇÏ°íÀÚ ÇÏ¿´´Ù.

Àç·á ¹× ¹æ¹ý: »óÇÏ¾Ç ºÎºÐ ¹«Ä¡¾Ç ¸ðµ¨ 6°³ ¼¼Æ®¸¦ º» ¿¬±¸¿¡ »ç¿ëÇÏ¿´´Ù. ¸ðµ¨À» ȯÀÚ ±¸°­±¸Á¶·Î °£ÁÖÇÏ°í ºÎºÐ ¹«Ä¡¾Ç ¸ðµ¨À» Trios ±¸°­½ºÄ³³Ê·Î µðÁöÅÐ ÀλóÀ» äµæÇÏ¿´´Ù. ¼ö¼ú°¡À̵åÀÇ Á¤È®µµ Æò°¡¸¦ À§ÇØ Á¦ÀÛµÈ Reference plate¸¦ ¸ðµ¨ÀÇ ±³Çո鿡 °íÁ¤ÇÑ »óÅ·ΠCBCT¸¦ ÃÔ¿µÇÏ¿´´Ù. CBCT¿¡¼­ ¾òÀº ¿µ»ó°ú µðÁöÅÐ Àλ󿡼­ ¾òÀº ¿µ»óÀ» Á¤ÇÕÇÏ°í Á¤ÇÕÇÑ ¿µ»ó¿¡¼­ ÀÓÇöõÆ® ½Ä¸³À§Ä¡¸¦ Áø´ÜÇÏ°í ¼ö¼ú°¡À̵带 µðÀÚÀÎÇÏ¿´´Ù. Á¦ÀÛµÈ ¼ö¼ú°¡À̵带 ÀÌ¿ëÇÏ¿© ºÎºÐ ¹«Ä¡¾Ç ¸ðµ¨¿¡¼­ ÀÓÇöõÆ®¸¦ ½Ä¸³ÇÏ¿´´Ù. ½Ã¼ú ÈÄ, ½Ã¼ú Àü°ú µ¿ÀÏÇÑ ¹æ¹ýÀ¸·Î CBCT¸¦ ÃÔ¿µÇÏ¿© ½Ã¼ú Àü ÄÄÇ»ÅÍ ¼ÒÇÁÆ®¿þ¾î¿¡¼­ ÃøÁ¤ÇÑ ¼öÄ¡¿Í ½Ã¼ú ÈÄ CBCTÃÔ¿µÇÏ¿© ¼ÒÇÁÆ®¿þ¾î»ó¿¡¼­ ÃøÁ¤ÇÑ ½Ã¼ú ÈÄ ¼öÄ¡ »çÀÌ Â÷ÀÌÁ¡À» ºñ±³ÇÏ¿´´Ù.

°á°ú: Æò±Õ°Å¸®¿ÀÂ÷°¡ ÀÓÇöõÆ® »ó´Ü XÃà¿¡¼­ 0.27 mm, YÃà¿¡¼­ 0.29 mm ¿´À¸¸ç, ÀÓÇöõÆ® ÇÏ´Ü(Apex)ºÎÀ§¿¡¼­´Â XÃà¿¡¼­ 0.11 mm, YÃà¿¡¼­ 0.14 mm Æò±Õ°¢µµ¿ÀÂ÷°¡ XÃà¿¡¼­ 0.26??, YÃà¿¡¼­ 0.26??¿´´Ù. Æò±Õ¼öÁ÷¿ÀÂ÷´Â +0.44 mm·Î ½Ã¼ú Àü °èȹÇÑ ³ôÀ̺¸´Ù Æò±Õ 0.44 mm ´õ À§·Î ÀÓÇöõÆ®°¡ ½Ä¸³µÇ¾ú´Ù.

°á·Ð: º» ¿¬±¸ÀÇ °á°ú´Â ÀλóÀç¿Í ¼®°í¸ðÇüÀ» »ç¿ëÇÏÁö ¾Ê°í µðÁöÅÐ ¿µ»ó ¸¸À» »ç¿ëÇÏ¿© Á¦ÀÛµÈ ¼ö¼ú°¡À̵带 »ç¿ëÇÏ¿© ÀÓÇöõÆ®¸¦ ½Ã¼úÇÒ °æ¿ì °èȹÇÑ ÀÓÇöõÆ® ½Ä¸³ À§Ä¡¿Í ¹æÇâÀ¸·Î ³ôÀº Á¤È®µµ¸¦ °¡Áö°í ÀÓÇöõÆ®¸¦ ½Ä¸³ÇÒ ¼ö ÀÖÀ½À» º¸¿© ÁÖ¾ú´Ù.

PURPOSE: The objective of this study was to evaluate the accuracy of a stereolithographic surgical guide that was made with information from intraoral digital impressions and cone beam CT (CBCT).

MATERIALS AND METHODS: Six sets of resin maxilla and mandible models with missing teeth were used in this study. Intraoral digital impressions were made. The virtual models provided by these intraoral digital impressions and by the CBCT scan images of the resin models were used to create a surgical guide. Implant surgery was performed on the resin models using the surgical guide. After implant placement, the models were subjected to another CBCT scan to compare the planned and actual implant positions. Deviations in position, depth and axis between the planned and actual positions were measured for each implant
.
RESULTS: The mean deviation of the insertion point and angulation were 0.28 mm and 0.26??, apex point were 0.11 mm and 0.14 mm respectively. The implants were situated at a mean of 0.44 mm coronal to the planned vertical position.

CONCLUSION: This study demonstrates that stereolithographic surgical guides created without the use of impressions and stone models show promising accuracy in implant placement.

Å°¿öµå

CAD/CAM; µðÁöÅÐ ½ºÄµ; µðÁöÅÐ Àλó; µðÁöÅÐ ÀÓÇöõÆ®; °¡À̵å¼ö¼ú
CAD/CAM; Digital data; Digital impression; Digital implant; Guided surgery

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