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A study of facial soft tissue of Korean adults with normal occlusion using a three-dimensional laser scanner

Korean Journal of Orthodontics 2006³â 36±Ç 1È£ p.14 ~ 29
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Abstract

Ä¡°ú±³Á¤¿µ¿ª¿¡¼­ ÄÄÇ»Åͱâ¼úÀÇ ¹ß´Þ·Î ¾È¸é °æÁ¶Á÷ ¹× ¿¬Á¶Á÷ÀÇ 3Â÷¿øÀûÀÎ ºÐ¼®ÀÌ °¡´ÉÇØÁ³À¸¸ç ÀÌ¿¡ µû¶ó ±³Á¤È¯ÀÚÀÇ Áø´Ü°ú Ä¡·á°èȹ ¹× Ä¡·á ÈÄÀÇ ¿¬Á¶Á÷ÀÇ 3Â÷¿øÀûÀÎ Æò°¡°¡ °¡´ÉÇÏ°Ô µÇ¾ú´Ù. ±×·¯³ª ¾È¸é ¿¬Á¶Á÷ÀÇ 3Â÷¿øÀû ºÐ¼®À» À§ÇÑ Ç¥ÁØÈ­µÈ ±âÁØÀÌ ¾ø°í ÀÓ»óÀû¿ëÀÌ °¡´ÉÇÑ Áø´Ü ÇÁ·Î±×·¥Àº ¾ÆÁ÷ ¾ø´Â ½ÇÁ¤ÀÌ´Ù. ÀÌ¿¡ º» ¿¬±¸¿¡¼­´Â 3Â÷¿ø Áø´Ü ½Ã À¯¿ëÇÑ ¾È¸é ¿¬Á¶Á÷ °èÃøÁ¡µéÀÇ 3Â÷¿ø °èÃøÄ¡(X, Y, Z)¸¦ Á¦½ÃÇÏ°í, À̸¦ ÀÌ¿ëÇÏ¿© ¼³Á¤µÈ ±æÀÌ, °¢µµ ¹× ºñÀ²ÀÇ Á¤»óÄ¡¸¦ Á¦½ÃÇÏ°íÀÚ ÇÑ´Ù. 3Â÷¿ø ÃÔ¿µ ±â±¸·Î ºñÁ¢ÃË½Ä 3Â÷¿ø ·¹ÀÌÀú ½ºÄ³³Ê¸¦ ÀÌ¿ëÇÏ¿´À¸¸ç, Çѱ¹ ¼ºÀÎ Á¤»ó±³ÇÕÀÚ ³²³à °¢°¢ 30¸í(³²ÀÚÆò±Õ 20.1¼¼, ¿©ÀÚÆò±Õ 21.7¼¼)À» ¿¬±¸´ë»óÀ¸·Î ÇÏ¿´´Ù. Rapidform 2004 ÇÁ·Î±×·¥(Inus Technology Inc., Seoul, Korea)À¸·Î 3Â÷¿ø ¿µ»óÀ» ¸¸µç ÈÄ 3Â÷¿ø ÀÔü¿µ»ó¿¡ soft tissue nasionÀ» ¿øÁ¡À¸·Î ÇÏ´Â ÁÂÇ¥°è(XÃà-Á¿ì, YÃà-»óÇÏ, ZÃà-ÀüÈÄ)¸¦ ¼³Á¤ÇÏ°í 29°³ÀÇ °èÃøÁ¡À» ÁöÁ¤ÇÑ ÈÄ °Å¸®°èÃø 45°³ Ç׸ñ, °¢µµ 8°³ Ç׸ñ, °Å¸®ºñÀ² 29°³ Ç׸ñÀ» ºÐ¼®ÇÏ¿´´Ù. °¢°¢ÀÇ °èÃøÁ¡ÀÇ 3Â÷¿ø ÁÂÇ¥(X, Y, Z)¸¦ ±¸ÇÏ¿´À¸¸ç À̸¦ ¹ÙÅÁÀ¸·Î °¢°¢ÀÇ °èÃøÇ׸ñÀ» °è»êÇÏ¿© Ç¥ÁØÈ­ÇÏ¿´´Ù. ƯÈ÷ °¢µµÇ׸ñ¿¡¼­ transverse upper lip prominence (Ch(Rt)-UKPm-Ch(Lt))´Â ³²ÀÚ 107¡Æ, ¿©ÀÚ 106¡Æ¿´°í, transverse mandibular prominence (Go¡¯(Rt)-Pog¡¯-Go¡¯(Lt))´Â ³²³à ¸ðµÎ 76¡Æ¿´´Ù. Naso frontal angle (G-N¡¯-Pn)Àº ³²ÀÚ 142¡Æ, ¿©ÀÚ 147¡Æ, transverse nasal prominence (Zy(Rt)-Pn-Zy(Lt))´Â ³²ÀÚ 112¡Æ, ¿©ÀÚ 116¡Æ ³²³à °£¿¡ Åë°èÇÐÀûÀ¸·Î À¯ÀÇÂ÷°¡ ÀÖ¾ú´Ù (p<0.05). ÇϾȸé°í°æ ÇϹæ 2/3 (Li-Me¡¯)¿Í ÇϾÇü±æÀÌ(Go¡¯-Me¡¯), ÀÔ¼ú°í°æ(ULPm-Li)°ú Æø°æ(Ch(Rt)-Ch(Lt))ÀÇ ºñÀ²Àº °¢°¢ 2/5·Î ³ªÅ¸³µ´Ù. °ü»ó±âÁØÆò¸é¿¡¼­ ¾È¸éÀÇ À±°ûÀ» ³ªÅ¸³»´Â °èÃøÁ¡ÀÎ FT, Zy, Pn, ULPm, Li, Me¡¯±îÁöÀÇ °Å¸®ÀÇ ºñ´Â -1/-1/1/-0.5/0.5/-0.6¿´´Ù. ¶ÇÇÑ ¾ò¾îÁø ÀڷḦ ÀÌ¿ëÇÏ¿© Çѱ¹ ¼ºÀÎ Á¤»ó±³ÇÕÀÚÀÇ 3Â÷¿ø ¾È¸é ¸ðµ¨À» Á¦ÀÛÇÏ¿´À¸¸ç ÀÌ´Â ±³Á¤Áø´Ü ¶Ç´Â Ä¡·á°á°ú ºñ±³ ½Ã template·Î È°¿ëµÉ ¼ö ÀÖÀ¸¸®¶ó »ç·áµÈ´Ù.

Developments in computer technology have made possible the 3-dimensional (3-D) evaluation of hard and soft tissues in orthodontic diagnosis, treatment planning and post-treatment results. In this study, Korean adults with normal occlusion (male 30, female 30) were scanned by a 3-D laser scanner, then 3-D facial images formed by the Rapidform 2004 program (Inus Technology Inc., Seoul, Korea.). Reference planes in the facial soft tissue 3-D images were established and a 3-D coordinate system (X axis-left/right, Y axis-superior/inferior, Z axis-anterior/posterior) was established by using the soft tissue nasion as the zero point. Twenty-nine measurement points were established on the 3-D image and 43 linear measurements, 8 angular measurements, 29 linear distance ratios were obtained. The results are as follows; there were significant differences between males and females in the nasofrontal angle (male: 142¡Æ, female: 147¡Æ) and transverse nasal prominence (male: 112¡Æ, female: 116¡Æ) (p < 0.05). The transverse upper lip prominence was 107¡Æ in males, 106¡Æ in females and the transverse mandibular prominence was 76¡Æ in both males and females. Li-Me¡¯ was 0.4 times the length of Go-Me¡¯ (mandibular body length) and the mouth height was also 0.4 times the width of the mouth width. The linear distance ratio from the coronal reference plane of FT, Zy, Pn, ULPm, Li, Me¡¯ was -1/-1/1/-0.5/0.5/-0.6 respectively. The 3-D facial model of Korean adults with normal occlusion were be constructed using coordinate values and linear measurement values. These data may be used as a reference in 3-D diagnosis and treatment planning for malocclusion and dentofacial deformity patients and applied for 3-D analysis of facial soft tissue changes before and after orthodontic treatment and orthognathic surgery.

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3Â÷¿ø ·¹ÀÌÀú ½ºÄ³³Ê;3Â÷¿ø ÁÂÇ¥°è ºñÀ²;3Â÷¿ø ¾È¸é ¸ðµ¨;3-D laser scanner;3-D coordinate system;Facial proportion;3-D facial model

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