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Facial soft tissue measuring analysis of normal occlusion using three-dimensional CT imaging

Korean Journal of Orthodontics 2005³â 35±Ç 6È£ p.409 ~ 419
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Abstract

ÃÖ±Ù µé¾î 3Â÷¿ø Àü»êÈ­ ´ÜÃþ ÃÔ¿µ(CT, Computed Tomography) ¿µ»óÀ» ÀÌ¿ëÇÑ Áø´Ü±â¹ýÀÇ °³¹ßÀ» À§ÇÑ ¿¬±¸°¡ È°¹ßÈ÷ ÁøÇàµÇ°í ÀÖÀ¸¸ç ¿©·¯ ºÐ¾ß¿¡¼­ 3Â÷¿øÀûÀÎ µÎ°³¾Ç¾È¸é ºÐ¼®ÀÇ Çʿ伺ÀÌ Áõ´ëµÇ°í ÀÖ´Ù. ƯÈ÷ ±³Á¤ Ä¡·á³ª ¾Ç±³Á¤ ¼ö¼ú ÈÄÀÇ °á°ú¿¡ À־ ¾È¸é ¿¬Á¶Á÷ÀÇ ºÐ¼®Àº ÇʼöÀûÀ̶ó ÇÒ °ÍÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â Á¤»ó±³ÇÕÀ» °¡Áø ¼ºÀÎ ³²ÀÚ 12¸í, ¼ºÀÎ ¿©ÀÚ 11¸íÀÇ CT ¿µ»óÀ» ÃÔ¿µÇÏ¿© °³Àοë ÄÄÇ»ÅÍ »ó¿¡¼­ V works 4.0 ÇÁ·Î±×·¥ (Cybermed Inc., Seoul, Korea)À¸·Î 3Â÷¿ø CT ¿¬Á¶Á÷ ¿µ»óÀ» À籸¼ºÇÑ ÈÄ¿¡ soft tissue NasionÀ» ±âÁØ ¿øÁ¡À¸·Î ÇÏ´Â 3Â÷¿ø ÁÂÇ¥Æò¸éÀÇ ÁÂÇ¥°è¸¦ ¼³Á¤ÇÏ¿© Á¤Áß¼±»óÀÇ soft tissue Nasion, Pronasale, Subnasale, Upper lip center, Lower lip center, soft tissue B, soft tissue Pogonion, soft tissue Menton µî 8°³ÀÇ °èÃøÁ¡°ú ¾çÃø¼ºÀÎ Endocanthion, Alare lateralis, Cheilion, soft tissue Gonion, Tragus, Zygomatic point µî ÃÑ 20°³ÀÇ ÀçÇö °¡´ÉÇÑ ¾È¸é ¿¬Á¶Á÷ÀÇ °èÃøÁ¡À» ÁöÁ¤ÇÏ¿´À¸¸ç V surgery ÇÁ·Î±×·¥(Cybermed Inc., Seoul, Korea)À» ÀÌ¿ëÇÏ¿© ÀÌµé °èÃøÁ¡ÀÇ 3Â÷¿øÀûÀÎ ÁÂÇ¥¿Í ±âÁØ ¿øÁ¡À¸·ÎºÎÅÍ °¢ °èÃøÁ¡±îÁöÀÇ Net (¥ä=¡î (X^(2)+Y^(2)+z^(2))) °ªÀÇ Æò±Õ°ú Ç¥ÁØÆíÂ÷¸¦ ±¸ÇÏ¿´´Ù. ¾È¸é ¿¬Á¶Á÷ ºÐ¼®ÀÇ 3Â÷¿øÀûÀÎ ÀÌÇظ¦ µ½±â À§ÇØ ÁÖ¿ä °èÃøÁ¡ °£ÀÇ °Å¸® °èÃøÀ» ½ÃÇàÇÏ¿´°í, ±× °á°ú Na¡¯-Sn°ú En(Rt)-En(Lt)¸¦ Á¦¿ÜÇÑ ´ëºÎºÐÀÇ °èÃø°ª¿¡¼­ ³²³à°£ÀÇ À¯ÀÇÇÑ Â÷ÀÌ°¡ ÀÖ¾úÀ¸¸ç, 2Â÷¿øÀûÀÎ µÎºÎ ¹æ»ç¼± ±Ô°Ý»çÁøÀ̳ª ¾È¸é »çÁøÀ¸·Î´Â Á¤È®ÇÑ °èÃøÀÌ ¾î·Á¿ü´ø Na¡¯-Zy, Na¡¯-Ch, Na¡¯-Go¡¯ (facial depth) µîÀÇ Á¤»óÄ¡µµ ±¸ÇÏ¿´´Ù. ÀÌ»óÀÇ ÀÚ·á´Â ºÎÁ¤±³ÇÕ È¯ÀÚ¿Í ¾Ç¾È¸é ±âÇü ȯÀÚÀÇ 3Â÷¿øÀûÀÎ Áø´Ü ¹× Ä¡·á °èȹ¿¡ Âü°íÀÚ·á·Î »ç¿ëµÉ ¼ö ÀÖÀ» °ÍÀÌ´Ù.

Studies for diagnostic analysis using three-dimensional (3D) CT images are recently in progress and needs for 3D craniofacial analysis are increasing in the fields of orthodontlcs. It is especially essential to analyze the facial soft tissue after orthodontic treatment and orthognathic surgery. In this study 3D CT images of adults with normal occlusion were taken to analyze. the facial soft tissue. Norms were obtained from CT images of adults with normal occlusion (12males, 11 females) using a computer program named V works 4.0 program. 3D coordinate planes were established using soft tissue Nasion as the reference point and a total of 20 reproducible landmarks of facial soft tissue were obtained using the multiple reconstructive sectional images (axial, sagittal and coronal images) of the V works 4.0 program: soft tissue Nasion, Pronasale, Subnasale, Upper lip center, Lower lip center, soft tissue B, soft tissue Pogonion, soft tissue Menton, Endocanthion (Rt/Lt), Alare lateralis (Rt/Lt), Cheilion (Rt/Lt), soft tissue Gonion
(Rt/Lt), Tragus (Rt/Lt), and Zygomatic point (Rt/Lt). According to the established landmarks and measuring method, the 3D CT images of adults with normal occlusion were measured and the normal positional measurements and their Net (¥ä=¡î (X^(2)+Y^(2)+z^(2))) values were obtained using V surgery program. In the linear measurement between landmarks, there was a significant difference between males and females except Na¡¯-Sn and En(Rt)-En(Lt). The normal ranges of Na¡¯-Zy, Na¡¯-Ch and Na¡¯-Go¡¯ (facial depth) were obtained. which was difficult to measure by two-dimensional (2D) cephalometric analysis and facial photographs. These data may be used as references for 3D diagnosis and treatment planning for patients with malocclusion and dentofacial deformity.

Å°¿öµå

3Â÷¿ø CT;¾È¸é ¿¬Á¶Á÷ ºÐ¼®;°èÃøÁ¡;3D CT;Facial soft tissue analysis;Landmarks

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KoreaMed