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Three dimensional analysis of the upper airway and facial morphology in children with Class II malocclusion using cone-beam computed tomography
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È«Áö¼÷ ( Hong Ji-Suk ) - ÇѸ²´ëÇб³ÀÇ·á¿ø °µ¿¼º½Éº´¿ø Ä¡°ú
±èÀ±Áö ( Kim Yoon-Ji ) - ÇѸ²´ëÇб³ÀÇ·á¿ø °µ¿¼º½Éº´¿ø Ä¡°ú±³Á¤°ú
¹Ú¾çÈ£ ( Park Yang-Ho ) - ÇѸ²´ëÇб³ÀÇ·á¿ø °µ¿¼º½Éº´¿ø Ä¡°ú±³Á¤°ú
±è´ë¼º ( Kim Dae-Sung ) - ÇѸ²´ëÇб³ ´ëÇпø
¿À°æ¹Î ( Oh Kyung-Min ) - ÇѸ²´ëÇб³ÀÇ·á¿ø °µ¿¼º½Éº´¿ø Ä¡°ú±³Á¤°ú
ÀÌÈ«±Ô ( Lee Hong-Kyu ) - °æ±âµµ ³²¾çÁֽú¸°Ç¼Ò
KMID : 0361920100400030134
Abstract
¼ºÀå±â ¾Æµ¿ÀÇ »ó±âµµ ÇùÂøÀº µÎ°³¾È¸é ¼ºÀå¿¡ ¿µÇâÀ» ¹ÌÄ¥ ¼ö ÀÖ´Ù. º» ¿¬±¸´Â 3Â÷¿ø cone-beam computed tomography (CBCT)¸¦ ÀÌ¿ëÇÏ¿© Á¦II±Þ ºÎÁ¤±³ÇÕ ¾Æµ¿ÀÇ »ó±âµµ ºÎÇÇ ¹× ´Ü¸éÀû °èÃøÄ¡¿Í Ãø¸ðµÎºÎ°èÃøÄ¡¸¦ ºñ±³ÇÏ¿© »ó±âµµ¿Í ¾È¸é ÇüÅ¿ÍÀÇ ¿¬°ü¼ºÀ» ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù. 37¸íÀÇ ¾Æµ¿(³²ÀÚ 17¸í, ¿©ÀÚ 20¸í, Æò±Õ ¿¬·É 11.02¼¼)ÀÇ CBCT¸¦ ÃÔ¿µÇÏ¿´´Ù. ¿¬±¸ °á°ú, »ó±âµµÀÇ PNS-posterior plane¿¡¼ÀÇ ´Ü¸éÀû(SPP)Àº Á¦II±Þ ºÎÁ¤±³ÇÕ±º¿¡¼ À¯ÀÇÇÏ°Ô ÀÛ¾Ò´Ù (p £¼ 0.05). »ó±âµµ ºÎÇÇ °èÃøÄ¡´Â Á¦II±Þ ºÎÁ¤±³ÇÕ±º¿¡¼ Á¦I±Þ ºÎÁ¤±³ÇÕ±ºº¸´Ù ÀÛ¾ÒÀ¸³ª, µÎ ±º °£ Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷ÀÌ´Â ¾ø¾ú´Ù. Á¦II±Þ ºÎÁ¤±³ÇÕ±ºÀº Èľȸð°í°æ(PFH), mandibular body length (p £¼ 0.05), Pog to Nperp (p £¼ 0.01)¿¡¼ Á¦I±Þ ºÎÁ¤±³ÇÕ±ºº¸´Ù À¯ÀÇÇÏ°Ô ÀÛÀº °ªÀ» º¸¿´°í, FMA (p £¼ 0.05), ANB, facial convexity (p £¼ 0.01)´Â À¯ÀÇÇÏ°Ô Å« °ªÀ» º¸¿´´Ù. Á¦II±Þ ºÎÁ¤±³ÇÕ±ºÀÇ PNS Àü¹æÀÇ »ó±âµµ ºÎÇÇ(WN)´Â ANB difference °¢µµ¿Í À½ÀÇ »ó°ü°ü°è¸¦ º¸¿´´Ù (p £¼ 0.05). Á¦II±Þ ºÎÁ¤±³ÇÕ ¾Æµ¿Àº »ó´ëÀûÀ¸·Î Á¼Àº »ó±âµµ ºÎÇǸ¦ °¡Áö¸ç ÀÌ¿¡ µû¸¥ °¨¼Ò µÈ Èľȸð°í°æ(PFH)°ú ÇϾǰñÀÇ divergentÇÑ ¾È¸é ¼ºÀå ¾ç»óÀ» º¸¿´´Ù.
Objective: The aim of this study was to evaluate the volumes and areas of the upper airways in children with
Class II malocclusion, using three dimensional cone-beam computed tomography (CBCT) and to compare the
volumetric and cross-sectional measurements and cephalometric variables to investigate possible relationships
between the upper airway and facial morphology.
Methods: CBCT scans were obtained from 37 subjects (17 boys and 20 girls; average age, 11.02 years). The upper airway volumes and areas were measured, and compared with cephalometric variables.
Results: The area of the PNS-posterior plane (SPP) was significantly smaller in the Class II malocclusion group (p £¼ 0.05). Also, the volumetric and cross-sectional measurements were lower in Class II than in Class I malocclusion groups, although the differences were not significant between the two groups (p £¾ 0.05). The Class II malocclusion group showed significantly smaller values of PFH, mandibular body length, pog to N perp and showed larger values of FMA, ANB, and facial convexity than the Class I malocclusion group. The volume of the upper airway in front of PNS point (WN) showed negative correlation with ANB (p £¼0.05).
Conclusions: The Class II malocclusion group had a narrower upper airway associated with a decreased posterior facial height and a divergent growth pattern than the Class I malocclusion group.
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Upper airway;CBCT;Class II malocclusion;Facial morphology
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