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Skeletal relapse and dental change during intermaxillary fixation after mandibular setback

Korean Journal of Orthodontics 1999³â 29±Ç 4È£ p.457 ~ 466
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ÀåÁ¾¾ð/Chong On Chang

Abstract

ÇÏ¾Ç ÈÄÅð¼ú ÈÄÀÇ °ñ°Ý¼º Àç¹ß°ú Ä¡¿­ º¯È­´Â ¾à°£°íÁ¤(intermaxillary fixation, IMF) Á¦
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¾î³ª´Â °ñ°Ý¼º Àç¹ß¿¡ µû¸¥ °ñÆí°£ °ß°íÇÑ À¶ÇÕÀÇ ¹æÇØ, º¸»ó¼º Ä¡¾ÆÀ̵¿, ÀüÄ¡ºÎ °³¹æ±³ÇÕ
µî°ú °°Àº ¿©·¯ °¡Áö ºÎÀÛ¿ëÀº ¼úÈÄ ±³Á¤Ä¡·á¿¡ ¸¹Àº ¿µÇâÀ» ¹ÌÄ¥ ¼ö ÀÖÀ¸¹Ç·Î ÀÓ»óÀûÀ¸·Î
Áß¿äÇÑ Àǹ̸¦ °®´Â´Ù. º» ¿¬±¸´Â ¾à°£°íÁ¤±â°£ Áß¿¡ ÀϾ´Â °ñ°á¼º Àç¹ß°ú Ä¡¿­ÀÇ º¯È­
¸¦ ¾Ë¾Æº¸°íÀÚ ½ÃÇàÇÏ¿´À¸¸ç, ÇϾÇÀüµ¹ÁõÀÇ Ä¡·á¸¦ À§Çؼ­ ¾çÃø¼º ÇϾÇÁö ½Ã»óºÐÇÒ°ñÀý´Ü¼ú
(bilateral sagittal split ramus osteotomy, BSSRO)°ú °­¼±°íÁ¤(wire fixation), ¾Ç°£°íÁ¤À»
½ÃÇàÇÑ 28¸íÀ» ´ë»óÀ¸·Î ÇÏ¿´´Ù. º» ¿¬±¸¿¡¼­´Â Ãø¸ð µÎºÎ ¹æ»ç¼± »çÁöÀº ÅëÇÏ¿© ¼ö¼ú¿¡ ÀÇ
ÇÑ °ñÆíµéÀÇ À̵¿·®°ú ¹æÇâ, ¾Ç°£°íÁ¤±â°£ ÁßÀÇ °ñ°á¼º Àç¹ß°ú Ä¡¿­º¯È­ÀÇ ¾ç°ú ¹æÇâÀ» Ãø
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1. ¼ö¼ú¿¡ ÀÇÇÑ °ñÆíÀÇ À̵¿¹æÇâÀº ¿ø½É°ñÆíÀº ÈÄ»ó¹æÀ¸·Î, ±Ù½É°ñÆíÀº ½Ã°è¹æÇâÀ¸·Î ȸÀüÇÏ
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ÆíÀº »ó¹Ý º¯À§¿Í ÇÔ²² ±Ù½É°ñÆíÀÇ gonion(p-Go)ºÎÀ§´Â Àü¹æº¯À§¸¦ ÇÏ¿´´Ù. ¾Ç°£°íÁ¤±â°£
Áß¿¡ ±Ù½É°ñÆíÀÇ gonion(p-Go)ÀÇ Àü¹æ º¯À§´Â ¼ö¼ú¿¡ ÀÇÇÑ ±Ù½É°ñÆíÀÇ gonion(p-Go)ÀÇ ÈÄ
¹æÀ¸·Î À̵¿·®°ú À¯ÀÇÇÑ »ó°ü°ü°è¸¦ º¸¿´´Ù. Áï ¼ö¼ú¿¡ ÀÇÇÑ ±Ù½É°ñÆíÀÇ gonion(p-Go)ÀÇ ÈÄ
¹æÀ¸·ÎÀÇ À̵¿ÀÌ ¸¹À»¼ö·Ï ¾Ç°£°íÁ¤±â°£ ÁßÀÇ ±Ù½É°ñÆíÀÇ gonion(p-Go)ÀÇ Àü¹æº¯À§´Â Áõ°¡
ÇÏ¿´´Ù.
3. ¾Ç°£°íÁ¤±â°£ Áß¿¡ ¼öÆòÇÇ°³, ¼öÁ÷ÇÇ°³´Â º¯È­°¡ ¾ø¾ú´Ù. »ó¾Ç ÀüÄ¡ºÎ´Â ÈĹæ°æ»ç
(retroclination), ÇϾÇÀüÄ¡ºÎ´Â ÈĹæ°æ»ç, Á¤ÃâÀÌ ÀϾÀ¸¸ç, ÀÌ·¯ÇÑ º¸»ó¼º Ä¡¾ÆÀ̵¿Àº ¾Ç°£
°íÁ¤±â°£ ÁßÀÇ ±Ù½É°ñÆíÀÇ gonion(p-Go)ÀÇ »ó¹æº¯À§¿Í À¯ÀÇÇÑ »ó°ü°ü°è¸¦ º¸¿´´Ù. Áï ¾Ç°£
°íÁ¤±â°£ ÁßÀÇ ±Ù½É°ñÆíÀÇ gonion(p-Go)ÀÇ »ó¹æº¯À§°¡ Ŭ¼ö·Ï º¸»ó¼º Ä¡¾ÆÀ̵¿·®µµ Áõ°¡ÇÏ
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#ÃÊ·Ï#
It has been reported that skeletal relapse and dental change after mandibular setback
do occur not only after intermaxillary fixation(IMF) removal but also during IMF. The
side effects of skeletal relapse during IMF have clinical importance because they can
cause many postoperative orthodontic problems. Generally, the prevention of solid union
between segments, compensatory tooth movement, anterior openbite, etc. have been cited
as the side effects fo jaw displacement.
The purpose of this study was to evaluate the skeletal relapse and dental change
during IMF. material consisted of 28 patients who were treated by BSSRO(bilateral
sagittal split ramus osteotomy), wire osteosynthesis, IMF for correction of mandibular
prognathism.
Through cephalometric analysis, the amount and direction of surgical movement,
skeletal relapse and dental change during IMF were measured. The correlation between
surgical movement and skeletal relapse, between skeletal relapse and dental changes
were evaluated.
1. Distal segment was repositioned backward and upward, proximal segment showed
clockwise rotation during surgery.
2. During IMF, anterior portion of distal segment was displaced backward and posterior
portion was displaced up ward. Proximal segment was displaced upward with forward
movement of Go(gonion of proximal segment). Backward surgical movement of p-Go
was significantly correlated with forward displacement of p-Go.
3. Overjet and overbite were not changed during IMF. The compensatory tooth
movements during IMF were characterized by retroclination of upper incisors and
retroclination, extrusion of lower incisors. These compensatory tooth movements had
statistically significant correlation with upward displacement of d-Go(gonion of distal
segment).

Å°¿öµå

°ñ°Ý¼º Àç¹ß; Ä¡¿­º¯È­; ¾Ç°£°íÁ¤; ÇÏ¾Ç ÈÄÅð¼ú; skeletal relapse; dental change; intermaxillary fixation; mandibular setback;

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