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Postoperative Stability and Occlusal Plane Alternation by Orthgnathic Surgery of Skeletal Class ¥² Malocclusion with Anterior Open Bite

Korean Journal of Orthodontics 1999³â 29±Ç 1È£ p.113 ~ 127
½Å¼öÁ¤, Ȳº´³², ÀÌÁ¤±Ù, À̽ÂÈÆ,
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½Å¼öÁ¤ ( Shin Soo-Jung ) - ¾ÆÁÖ´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡°úÇб³½Ç
Ȳº´³² (  ) - ¾ÆÁÖ´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡°úÇб³½Ç
ÀÌÁ¤±Ù (  ) - ¾ÆÁÖ´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡°úÇб³½Ç
À̽ÂÈÆ (  ) - ¾ÆÁÖ´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡°úÇб³½Ç

Abstract

¾Ç°ñÀÇ °ñ°ÝÀû ºÎÁ¶È­¸¦ °¡Áø ȯÀÚÀÇ ±³Á¤Ä¡·á´Â ¾Ç±³Á¤ ¼ö¼úÀ» ÇÊ¿ä·Î ÇÏ°í, ¾Ç±³Á¤ ¼ö
¼ú¿¡ ÀÇÇØ ±³ÇÕÆò¸é°¢Àº º¯È­µÈ´Ù. ƯÈ÷ ÀüÄ¡ºÎ °³±³¸¦ µ¿¹ÝÇÑ ¥²±Þ ºÎÁ¤±³ÇÕ È¯ÀÚ¿¡¼­ Ä¡
¾Æ¾È¸é ±âÇüÀ» Ä¡·áÇϱâ À§ÇÑ ±³ÇÕÆò¸é°¢ÀÇ º¯È­¿¡ ´ëÇÏ¿© ¸¹Àº ³í¶õÀÌ ÀÖ¾î ¿Ô´Ù. ±³ÇÕÆò
¸é°¢À» Áõ°¡½ÃÅ°´Â ÇϾǰñÀÇ ½Ã°è¹æÇâ ȸÀü(clokwise rotation)Àº ÀüÄ¡ºÎ °³±³¿¡ ´ëÇÑ ÀûÀý
ÇÑ Ä¡·á¹ýÀ¸·Î ÃßõµÇ¾î¿Ô°í ÇϾǰñÀÇ ¹Ý½Ã°è¹æÇâÀÇ È¸Àü(counterclockwise rotation)Àº ÇÏ
¾ÇÁö ±³°æÀ» Áõ°¡½ÃÅ°´Â ¹æÇâÀ¸·Î ÇϾǰñÀ» ȸÀü½ÃŲ´Ù´Â °³³äÀ¸·Î ÀÎÇØ Àç¹ß(relapse)À» À¯
¹ßÇÏ´Â ºÒ¾ÈÁ¤ÇÑ ¼ö¼ú¹æ¹ýÀ¸·Î ÀνĵǾî¿Ô´Ù.
º» ¿¬±¸´Â ÀüÄ¡ºÎ °³±³¸¦ µ¿¹ÝÇÑ °ñ°Ý¼º¥²±Þ ºÎÁ¤±³ÇÕ È¯ÀÚ¿¡¼­ ±³ÇÕÆò¸éÀÇ ¹Ý ½Ã°è ¹æÇâ
ȸÀüÀ» µ¿¹ÝÇÑ ÇϾÇÁö½Ã»óºÐÇÒ °ñÀý´Ü¼ú ½ÃÇà ÈÄ ±³ÇÕÆò¸é°¢ÀÇ º¯È­¿Í ¼úÈÄ ¾ÈÁ¤¼º°úÀÇ °ü
°è¸¦ Æò°¡ÇÏ°íÀÚ ÇÏ¿´´Ù. ÇϾÇÁö ½Ã»óºÐÇÒ °ñÀý´Ü¼ú°ú rigid fixationÀ¸·Î Ä¡·á¹ÞÀº ȯÀÚ 25
¸í(Æò±Õ¿¬·É 20.6¼¼)À» ´ë»óÀ¸·Î ÇÏ¿© ¼ö¼ú Á÷Àü(T1), ¼úÈÄ 2ÁÖ³»(T2), ±×¸®°í ¼ö¼ú 6°³¿ù
ÀÌÈÄ(T3)¿¡ ÃÔ¿µÇÑ Ãø¸ð µÎºÎ°èÃø ¹æ»ç¼± »çÁøÀ» Åë°èºÐ¼®ÇÑ °á°ú(Paired t-test, Pearson
correlation analysis), ´ÙÀ½ÀÇ °á·ÐÀ» ¾ò¾ú´Ù.
1.¾Ç±³Á¤ ¼ö¼úÈÄ(T2),ÇϾÇÆò¸é°¢Àº 2.9¡Æ °¨¼ÒÇÏ¿´°í, SN Æò¸é¿¡ ´ëÇÑ ÇÏ¾Ç ±³ÇÕÆò¸éÀÇ °¡µµ
´Â 2.7¡Æ°¨¼ÒÇÏ¿´´Ù. ¼úÈÄ 6°³¿ù°æ°ú ÈÄ (T3) ÈÄ¾È¸é °í°æÀÇ °¨¼Ò·Î ÀÎÇØ (p£¼0.01) ÇϾÇÆò
¸é°¢Àº 1.0¡ÆÁõ°¡ÇÏ¿´À¸³ª ÇÏ¾Ç ±³ÇÕÆò¸éÀÇ °æ»çµµ´Â º¯È­µÇÁö ¾Ê¾Ò´Ù.
2. ¾Ç±³Á¤ ¼ö¼ú ÈÄ ½Ã°£ °æ°ú(T3)¿¡ ÀÇÇØ ¹ß»ýÇÑ ¼öÆòÀû Àç¹ßÀº ÇϾǰñÀÇ Àü¹æ À̵¿·®ÀÌ B
Á¡¿¡¼­ 1.6§®·Î ¼ö¼ú½Ã Àüü ÈĹæ À̵¿·®ÀÇ ¾à 22£¥¿´´Ù, Àü¾È¸é °í°æ¿¡¼­´Â ¼öÁ÷Àû Àç¹ßÀÌ
¹ß»ýÇÏÁö ¾Ê¾ÒÀ¸³ª, ÈÄ¾È¸é °í°æÀº °¨¼ÒÇÏ¿´´Ù(p£¼0.01).
3. ¼öÆòÀû Àç¹ß°ú »ó°ü°ü°è¸¦ º¸ÀÌ´Â Ç׸ñÀº ÇϾÇÆò¸é°¢ À̾ú°í(p£¼0.01) ¼ö¼ú 6°³¿ù°æ°ú ÈÄ
ÈÄ¾È¸é °í°æÀÇ °¨¼Ò¿Í »ó°ü°ü°è°¡ ÀÖ´Â ¿ä¼Ò·Î´Â ¼ö¼ú½Ã ÇϾǰñÀÇ ÈĹæ À̵¿·®(p£¼0.01), ÇÏ
¾ÇÁö °í°æÀÇ Áõ°¡·®(p£¼0.01), ±×¸®°í ÇϾÇÆò¸é°¢ÀÇ °¨¼Ò·®(p£¼0.01)µîÀÌ ÀÖ¾ú´Ù.
4. ¼ö¼ú½Ã ÇÏ¾Ç ±³ÇÕÆò¸é °æ»çµµÀÇ º¯È­·®°ú ¼úÈÄ Àç¹ß°ú´Â »ó°ü°ü°è°¡ ¾ø¾ú´Ù.
#ÃÊ·Ï#
The purpose of this study is to investigate the stability of counterclockwise rotation
of mandible by sagittal split ramus osteotomy to correct the skeletal Class ¥²
malocclusion with anterior open bite. Twenty five skeletal Class¥² open bite
patients(mean age 20.6 years) who were treated by the sagittal split ramus osteotomies
with rigid fixation were examined in this study. Cephalometric radiographs were taken
for ach patients preoperative(T1), early postoperative(T2), and late postoperative
period(T3). Mean postoperative period(T3).Mean postoperative period was 8.0 months.
Cephalomerric analysis was done and data from T1, T2, and T3 were analyzed
statistically by paired t-test and pearson correlation analysis. The following results were
obtained.
1. Mandibular plane angle decreased 2.9¡Æ and mandibular occlusal plane angle related to
SN plane decreased 2.7¡Æ after orthognathic surgery(T2). At 6 months after orthgnathic
surgery(T3), mandibular plane angle increased 1.0¡Æ, but mandibular occlusal plane angle
did not changed.
2. The amount of horizontal relapse long time after orthornathic surgery(T3) was 1.6§®
at B point and it was 22£¥ of the total posterior movements. There was no vertical
relapse in the anterior facial height.
3. The related factor with horizontal relapse at late postoperative period was mandibular
plane angle(p£¼0.01). The related factors with decreasing posterior facial height were
amount of mandibular setback(p£¼0.01), increasing of mandibular ramus height(p£¼0.01),
and decrease of the mandibular plane angle during operation(p£¼0.01).
4. There was no relationship between the amount of changes in mandibular occlusal
plan angle during operation and the amount of relaspe after surgery.

Å°¿öµå

ÀüÄ¡ºÎ°³±³; °ñ°Ý¼º¥²±Þ ºÎÁ¤±³ÇÕ È¯ÀÚ; ±³ÇÕÆò¸é; ¹Ý½Ã°è ¹æÇâÀÇ È¸Àü; ¼úÈÄ; Anterior openbite; Skeletal Class¥² malocclusion patient; Occlusal plane; Counterclockwise rotation; Postoperative stability;

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