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A LATERAL CEPHALOMETRIC STUDY OF POSTOPERATIVE OCCLUSAL PLANE ALTERATION OF SKELETAL CLASS ¥² MALOCCLUSION PATIENT

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À̱â¼ö (  ) - °æÈñ´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­¾Ç¾È¸é¿Ü°úÇб³½Ç

Abstract

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¼úÀü ±³ÇÕÆò¸é °æ»çµµ¿¡ µû¶ó 3±ºÀ¸·Î ³ª´©¾úÀ¸¸ç, 7¡Æ¹Ì¸¸ÀÎ °æ¿ì¸¦ 1±º, 7¡Æ-15¡Æ¿¡ ¼ÓÇÏ
´Â °æ¿ì¸¦ 2±º, 15¡Æº¸´Ù Å« °æ¿ì¸¦ 3±ºÀ¸·Î ÇÏ°í ÇϾǰñÀÇ ÈĹæÀ̵¿ ¼ö¼úÈÄ ³ªÅ¸³­ °¢ ±º
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1. ¼úÀü ±³ÇÕÆò¸é °æ»çµµ°¡ Ŭ¼ö·Ï ÇϾÇÀüµ¹ÀÇ Á¤µµ´Â ½ÉÇÏÁö ¾Ê¾Ò´Ù.
2. ¼ö¼úÀü°ú ¼ö¼úÁ÷ÈÄÀÇ ºñ±³½Ã, ¼úÀüÀÇ ±³ÇÕÆò¸éÀÇ °æ»çµµ¿Í ÇϾǰñÀÇ ÈĹæÀ̵¿·®°úÀÇ »ç
ÀÌ¿¡ Ưº°ÇÑ »ó°ü°ü°è´Â ¾ø¾ú´Ù.
3. ¼úÈÄ ±³ÇÕÆò¸é °æ»çµµÀÇ º¯È­´Â ¼úÀü ±³ÇÕÆò¸é °æ»çµµ°¡ ÀÛÀ»¼ö·Ï Áõ°¡ÇÏ°í Ŭ¼ö·Ï °¨
¼ÒÇÏ´Â ¹æÇâÀ¸·Î º¯ÇÏ¿´´Ù.
4. ¼öÁ÷±âÁؼ±¿¡ ´ëÇÑ BÁ¡ °Å¸®ÀÇ Àç±ÍÁ¤µµ´Â ¼úÀü ±³ÇÕÆò¸é °æ»çµµÀÇ Á¤µµ¿Í´Â ¹«°üÇÏ¿´´Ù.
#ÃÊ·Ï#
This study was made with lateral cephalometric radiography of 28 skeletal class ¥²
malocclusion patients that were performed to surgery of mandible.
The 28 patients were selected by four standards as follows.
1) Set-back amount of mandible is below 10mm
2) No extrusion and intrusion of posterior tooth or alteration of interincisial angle at
period of postoperative orthodontic treatment.
3) Change of mesial segment location of mandible on lateral cephalometrics
4) No genioplasty
And 28 patients were divided to three group(1,2,3 group) by degree of preoperative
occlusal plane angle to Burstone`s horizontal plane. The preoperative occlusal plane
angle, which of 1 group was smaller than 7¡Æ and 2 group was between 7¡Æto 15¡Æand
3 group was larger than 15¡Æ.
The results were as follows :
1. As the preoperative occlusal plane angle was larger, the degree of mandibular
prognathism was not severe.
2. On comparsion of preoperative and immediate postoperative cephalometric analysis,
specific relationship of occlusal plane angle and set-back amount of mandible was not
present.
3. As the preoperative occlusal plane angle was smaller, the alteration of postoperative
occlusal plane angle was increased tendency. As the preoperative occlusal plane angle
was larger, the alteration of postoperative occlusal plane angle was decreased tendency.
4. The relapsed degree of B point distance to Vertical plane was not relationship to
the degree of preoperative occlusal plane angle.

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