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Assessment of antero-posterior skeletal relationships in adult Korean patients in the natural head position and centric relation

Korean Journal of Orthodontics 2010³â 40±Ç 6È£ p.421 ~ 431
¾ÈÀåÈÆ, ¹è±¤ÇÐ, ¹Ú¿µÁÖ, Hong Ryoon-Ki, ³²Á¤ÈÆ, ±è¹ÌÀÚ,
¼Ò¼Ó »ó¼¼Á¤º¸
¾ÈÀåÈÆ ( Ahn Jang-Hoon ) - Hallym University Kangnam Sacred Heart Hospital Department of Orthodontics
¹è±¤ÇР( Bae Kwang-Hak ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¿¹¹æÄ¡Çб³½Ç
¹Ú¿µÁÖ ( Park Young-Ju ) - Hallym University Kangnam Sacred Heart Hospital Department of Oral and Maxillofacial Surgery
 ( Hong Ryoon-Ki ) - Chong-A Dental Hospital Department of Orthodontics
³²Á¤ÈÆ ( Nam Joeng-Hun ) - Hallym University Kangnam Sacred Heart Hospital Department of Oral and Maxillofacial Surgery
±è¹ÌÀÚ ( Kim Mi-Ja ) - Hallym University Hangang Sacred Heart Hospital Department of Orthodontics

Abstract

SN ±âÁؼ±°ú FH ±âÁؼ±ÀÌ ¾È¸ðÀÇ ½É¹Ì¿¡ Á¾Á¾ ¸ÂÁö ¾Ê¾Æ¼­ ¸ðµç Ä¡¿­ ±³Á¤ ¹× ¾Ç±³Á¤ ¼ö¼ú Áõ·Ê¸¦ ÀÌ ±âÁؼ±À» ÀÌ¿ëÇÏ¿© ¹Ýº¹ÀûÀ¸·Î Á¤È®È÷ Áø´ÜÇϱⰡ ¸Å¿ì ¾î·Æ´Ù. µû¶ó¼­, ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº Çѱ¹ ¼ºÀΠȯÀÚ¸¦ ´ë»óÀ¸·Î ¾ÈÁ¤À§¿¡¼­ ÀÚ¿¬ µÎºÎ À§Ä¡ÀÇ °³Àγ» ÀçÇö¼ºÀ» È®ÀÎÇÏ°í Áø¼º ¼öÆò¼±¿¡ ´ëÇØ SN ±âÁؼ±°ú FH ±âÁؼ±ÀÇ °³Àΰ£ ´Ù¾ç¼ºÀ» Áõ¸íÇÏ´Â °ÍÀÌ´Ù. ±×¸®°í, »ó±â µÎ ¿¬±¸¸¦ ¹ÙÅÁÀ¸·Î Na ±âÁØ Áø¼ö¼±¿¡¼­ AÁ¡ ¹× BÁ¡±îÁöÀÇ °Å¸®°¡ SNA ¹× SNB °¢µµ¿Í »ó°ü °ü°è°¡ ÀÖ´ÂÁö ¿©ºÎ¸¦ Á¶»çÇÏ´Â °ÍÀÌ´Ù. ºÎÁ¤±³ÇÕ ¹× ¾Ç°ñÀÇ ºÎÁ¶È­¸¦ Ä¡·á¹Þ±â À§ÇØ °­³²¼º½Éº´¿ø°ú ÇÑ°­¼º½Éº´¿ø ±³Á¤°ú¿¡ ³»¿øÇÑ 116¸íÀÇ È¯ÀÚ(³²ÀÚ 23¸í, ¿©ÀÚ 93¸í)¸¦ Á¶»çÇÏ¿´´Ù.Áß½ÉÀ§ ¿Î½º ¹ÙÀÌÆ®´Â ¸ðµç ´ë»óµé·ÎºÎÅÍ Ã¤µæÇÏ¿´°í 1ÁÖÀÏ °£°ÝÀ¸·Î ÀÚ¿¬ µÎºÎ À§Ä¡¿Í Áß½ÉÀ§ »óÅ¿¡¼­ ¸ðµç ´ë»óÀÚÀÇ Ãø¸ðµÎºÎ¹æ»ç¼±»çÁøÀ» 2¹ø ÃÔ¿µÇÏ¿´´Ù. 3°³ÀÇ º¯¼ö¿¡¼­ À§Ä¡ ¼±Á¤ÀÇ ¹æ¹ý ¿À·ù´Â ´Ù¸¥ ¿¬±¸¿¡ ºñÇØ ³·Àº ¼öÄ¡¸¦ º¸¿´´Ù. ±×¸®°í 6°³ÀÇ º¯¼ö¿¡¼­ ±º³» »ó°ü°è¼ö¸¦ ÀÌ¿ëÇÏ¿© ÀÚ¿¬µÎºÎ À§Ä¡ÀÇ °³Àΰ£ ÀçÇö¼ºÀ» Áõ¸íÇÏ¿´´Ù (p £¼ 0.001). °¢ ȯÀÚ¿¡¼­ Áø¼º ¼öÆò¼±¿¡ ´ëÇÑ FH ±âÁؼ±°£ÀÇ °¢µµ´Â Åë°èÀûÀ¸·Î ±âÁØÄ¡ 0µµ¿Í ´Ù¸£Áö ¾Ê¾Ò´Ù (p £¾ 0.05). ÇÏÁö¸¸ ÀÓ»óÀûÀ¸·Î ´Ù¾çÇÑ ¼öÄ¡¸¦ º¸¿´´Ù (SD: 3.89o). ¹Ý¸é °¢ ȯÀÚ¿¡¼­ Áø¼º ¼öÆò¼±¿¡ ´ëÇÑ SN ±âÁؼ±°£ÀÇ °¢µµ´Â ±âÁØÄ¡ 7µµ¿Í ¸Å¿ì ´Ù¸£°Ô ³ªÅ¸³µ´Ù (p £¼ 0.05). Na ±âÁØ Áø¼ö¼±¿¡¼­
AÁ¡ ¹× BÁ¡±îÁöÀÇ °Å¸®¿Í SNA ¹× SNB °¢µµ¿ÍÀÇ ÇǾ »ó°ü °è¼ö¿¡¼­ À¯ÀÇÇÏÁö¸¸ ¸Å¿ì ³·Àº ¼öÄ¡¸¦ º¸¿´´Ù (p £¼ 0.01). ÀÌ¿¡ ÀÚ¿¬ µÎºÎ À§Ä¡´Â Ä¡¿­ ±³Á¤ ȯÀÚ ¹× ¾Ç±³Á¤ ¼ö¼ú ȯÀÚÀÇ Áø´ÜÀ» À§ÇØ ÀçÇöÀûÀÌ°í ¹ÏÀ» ¸¸ÇÑ À§Ä¡À̸ç ÀÚ¿¬µÎºÎ À§Ä¡ ¹× Áß½ÉÀ§ »óÅ¿¡¼­ Na ±âÁØ Áø¼ö¼±Àº SN°ú FH±âÁؼ±À» ´ë½ÅÇÏ¿© Çѱ¹ÀÎ ¼ºÀΠȯÀÚ¿¡¼­ »ó¾Ç°ñ°ú ÇϾǰñÀÇ ÀüÈÄ °ü°è¸¦ °áÁ¤Çϴµ¥ ¸Å¿ì À¯¿ëÇÑ ±âÁؼ±À¸·Î ÀÌ¿ëµÉ¼ö ÀÖÀ» °ÍÀ¸·Î »ý°¢ÇÑ´Ù.

Objective: This study aimed to verify the intra-individual reproducibility of the natural head position (NHP)
in adult Korean patients in the centric relation (CR) position and to prove the inter-individual variability of the Frankfurt horizontal (FH) plane and sella-nasion (SN) line compared to the true horizontal line (THL). In addition, the study aimed to investigate the correlations between linear measurements from A-point and B-point to the nasion true vertical line (NTVL) and angular measurements from A-point and B-point to the SN line.

Methods: Two lateral cephalograms were taken of 116 subjects (23 males, 93 females) with CR wax bites in a NHP at a one-week interval.

Results: Method errors of three variables and intraclass correlation coefficients of six parameters proved the intra-individual reproducibility of NHP (p £¼ 0.001). The angle of the FH to the THL was not significantly different from 0o (p £¾ 0.05), but it was clinically variable (SD 3.89o) on the inter-individual level. Conversely, the angle of the SN line to the THL was significantly different from 7o (p £¼ 0.05). Very low correlation was found between the linear measurements and angular measurements of A-point and B-point (p £¼ 0.01).

Conslusions: The NTVL could be a useful reference line for assessing the antero-posterior position of the maxilla and mandibleof Korean adult patients in NHP and CR.

Å°¿öµå

ÀÚ¿¬ µÎºÎ À§Ä¡; Áß½ÉÀ§; FH ±âÁؼ±; SN ±âÁؼ±; Na ±âÁØ Áø¼ö¼±
Natural head position; Centric relation; Frankfurt horizontal plane; Sella-nasion line; Nasion true vertical line

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