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Validity of Arch Relationship Measurements in Digital Dental Models

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·ùÁöÀΠ( Ryu Ji-In ) - Hallym University Sacred Heart Hospital Dental Clinic Center Department of Pediatric Dentistry
¾çº´Àº ( Yang Byoung-Eun ) - Hallym University Graduate School of Clinical Dentistry
ÀÌÇý¸² ( Lee Hye-Lim ) - Hallym University Sacred Heart Hospital Dental Clinic Center Department of Pediatric Dentistry

Abstract

ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº µðÁöÅÐ Ä¡¿­ ¸ðÇü¿¡¼­ Ä¡¾Æ Æø°æ, º¼Æ° ºñÀ², ¼öÆò ÇÇ°³, ¼öÁ÷ ÇÇ°³¸¦ Æ÷ÇÔÇÑ ±³Á¤Àû ÃøÁ¤ÀÇ Å¸´ç¼ºÀ» È®ÀÎÇÏ´Â °ÍÀÌ´Ù.
¸¸ 12 - 18¼¼ÀÇ È¯ÀÚ¸¦ ´ë»óÀ¸·Î ¼¼°¡Áö ÇüÅÂÀÇ Ä¡¿­ ¸ðÇüÀ» ȹµæÇÏ¿´´Ù. ±âÁ¸ÀÇ ¼®°í ¸ðÇüÀ» Çü¼ºÇÏ¿´°í, DOF freedom HD ¸ðÇü½ºÄ³³Ê¸¦ ÅëÇØ µðÁöÅÐ ¸ðÇüÀ¸·Î º¯È¯ÇÏ¿´´Ù. ±×¸®°í CS3600 ±¸°­ ½ºÄ³³Ê·Î µðÁöÅÐ ¸ðÇüÀ» Çü¼ºÇÏ¿´´Ù. °¢ ¸ðÇü¿¡¼­ ÃøÁ¤ ½ÃÇà ÈÄ, ±Þ³» »ó°ü °è¼ö¸¦ ÅëÇØ °èÃøÀÇ ½Å·Ú¼º°ú ÀçÇö¼ºÀ» È®ÀÎÇÏ¿´À¸¸ç, ´ëÀÀ Ç¥º» t °ËÁ¤À» »ç¿ëÇÏ¿© Ÿ´ç¼ºÀ» Æò°¡ÇÏ¿´´Ù.
°á°úÀûÀ¸·Î ¸ðµç ±º¿¡¼­ ±Þ³» »ó°ü°è¼ö´Â 0.750À» ÃÊ°úÇÏ¿© ¿¬±¸ÀÚ ³» ½Å·Ú¼º°ú ¿¬±¸ÀÚ °£ ÀçÇö¼ºÀÌ ÀÖÀ½À» È®ÀÎÇÏ¿´´Ù. ¸ðÇü ½ºÄµÇÑ ±ºÀº Àüü ¹× ÀüÄ¡ º¼Æ° ºñÀ², ¼öÆò ¹× ¼öÁ÷ ÇÇ°³¿¡¼­ Ÿ´ç¼ºÀ» º¸¿´´Ù. ±¸°­ ½ºÄµÇÑ ±ºÀº ÀüÄ¡ º¼Æ° ºñÀ², ¼öÆò ÇÇ°³¿¡¼­ Ÿ´ç¼ºÀ»º¸¿´´Ù.
±¸°­ ½ºÄµÇÑ µðÁöÅÐ ¸ðÇüÀ» ÀÌ¿ëÇÑ °èÃøÀº Àλó äµæ¿¡ ¾î·Á¿òÀÌ ÀÖ´Â ¼Ò¾Æ û¼Ò³â¿¡°Ô °í·ÁÇÒ ¼ö ÀÖ´Â ´ë¾ÈÀÌ´Ù. ÇÏÁö¸¸ ÀÓ»ó¿¡¼­À̸¦ ±³Á¤Àû ºÐ¼®¿¡ ÀÌ¿ëÇÒ °æ¿ì ¿ÀÂ÷¸¦ °í·ÁÇÑ Àû¿ëÀÌ ÇÊ¿äÇÏ´Ù.

The aim of the present study is to evaluate the validity of orthodontic measurements including tooth width, Bolton ratio, overjet and overbite on the digital dental models.
Dental models of the subjects aged 12 to 18 were obtained in 3 different forms, which were conventional stone model, digital model created with Freedom HD model scanner, and digital model produced with CS3600 intraoral scanner. After measurements were made on the models, reliability and reproducibility of the measurements were evaluated by using intraclass correlation coefficient, while validity was assessed with paired t-test.
As a result, significant reliability and reproducibility were verified, with intraclass correlation coefficient exceeding 0.750 in all groups. Measurements of the model scanned group showed an adequate validity in overall and anterior Bolton ratio, overjet, and overbite. Intraoral scanned models showed an adequate validity in anterior Bolton ratio, and overjet.
Measurement on intraoral scanned digital models can be considered as an alternative for young children who have difficulty in taking impression. Furthermore, careful considerations on measurement error should be made in clinical situations.

Å°¿öµå

Intraoral scanner; Digital model; Digital measurement; Bolton ratio; Overjet; Overbite

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