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A study on the relationship of the mandibular symphysis and anterior alveolar and skeletal morphology according to the rotational growth pattern of mandible in skeletal Class¥² malocclusion

Korean Journal of Orthodontics 1999³â 29±Ç 3È£ p.303 ~ 315
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Abstract

°ñ°Ý¼º¥²±Þ ºÎÁ¤±³ÇÕÀÚÀÇ ÇϾǰñ ȸÀü¼ºÀå ¾ç»óÀÌ ÇϾÇÀ̺Π¹× »óÇϾÇÀýÄ¡ºÎÀÇ ÇüÅÂ¿Í ¾î
¶°ÇÑ °ü·ÃÀÌ ÀÖ´ÂÁö ¾Ë¾Æº¸°íÀÚ º» ¿¬±¸¸¦ ½ÃÇàÇÏ¿´´Ù. ÇÏ¾Ç Àüµ¹ÀÇ ¾Ç°ñºÎÁ¶È­¸¦ º¸À̸ç
±³Á¤Ä¡·áÀÇ °æÇèÀÌ ¾ø´Â °ñ°Ý¼º¥²±Þ ºÎÁ¤±³ÇÕÀÚ ¼ºÀÎ ³²³à 86¸íÀ» Skieller µîÀÌ ÇϾǰñ ȸ
Àü¼ºÀå ¾ç»óÀ» ÆľÇÇϱâ À§ÇØ Á¦¾ÈÇÑ ¹æ¹ýÀ» ÅëÇØ Àü¹æȸÀü¼ºÀ屺°ú ÈĹæȸÀü¼ºÀ屺À¸·Î ºÐ
·ùÇÏ¿©, °ñ°Ý¼º¥²±Þ ºÎÁ¤±³ÇÕÀÚ¿¡¼­ ÇϾǰñȸÀü¼ºÀå ¾ç»ó¿¡ µû¸¥ °ñ°Ý°ü°è, ÇϾÇÀ̺ÎÀÇ ÇüÅÂ
¿Í »óÇϾÇÀýÄ¡ÀÇ À§Ä¡¿¡ °üÇÏ¿© ºÐ¼®ÇÑ °á°ú, ´ÙÀ½°ú °°Àº °á·ÐÀº ¾ò¾ú´Ù.
1. Àü¹æȸÀü¼ºÀ屺¿§ ÈĹæȸÀü¼ºÀ屺¿¡ ºñÇØ ¼öÆòÀûÀÎ µÎ°³¾È¸é °ñ°Ý°ü°è¿¡¼­ SNA, SNB°¡
¸ðµÎ À¯ÀǼ­ ÀÖ°Ô Å©°Ô ³ªÅ¸³µ´Ù. ¶ÇÇÑ ¼öÁ÷ÀûÀÎ µÎ°³¾È¸é °ñ°Ý°ü°è¿¡ ´ëÇؼ­´Â ¸ðµç Ç׸ñ
¿¡¼­ Â÷ÀÌ°¡ ÀÖ¾ú´Ù.
2. ÇϾÇÀ̺Π¹× »óÇϾÇÀýÄ¡ºÎ ÇüÅÂ¿Í ÇϾǰñÀÇ È¸Àü¼ºÀå ¾ç»ó »çÀÌÀÇ °ü°è¿¡¼­´Â ÈĹæȸÀü
¼ºÀ屺¿¡¼­ ÇϾÇÀýÄ¡°¡ ´õ ¼³Ãø°æ»çµÇ°í, ÇϾÇÀýÄ¡ÀÇ Ä¡Á¶ºÎ ¼ø¼³Æø°æÀÌ Á¼À¸¸ç »ó¾ÇÀýÄ¡ÀÇ
Ä¡Á¶ºÎ¿¡¼­ ±¸°³Æò¸é±îÁöÀÇ °Å¸®°¡ ´õ Áõ°¡µÇ¾ú´Ù.
3. ÇϾÇÆò¸éÀ» ±âÁØÀ¸·Î °èÃøÇÑ, symphysis ratio´Â Àü¹æȸÀü¼ºÀ屺°ú ÈĹæȸÀü¼ºÀ屺 »çÀÌ
¿¡ À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù.
4. ÇϾǰñÀÇ È¸Àü¼ºÀå ¾ç»ó°ú ÇϾÇÀ̺Π¹× »óÇϾÇÀýÄ¡ºÎ ÇüÅ¿¡ ´ëÇÑ °èÃøÇ׸ñ°úÀÇ »ó°üºÐ
¼®¿¡¼­, ÈĹæȸÀü¼ºÀå ¾ç»óÀ¸·Î ¼ºÀåÇÒ¼ö·Ï, overbiteÀÇ °¨¼Ò, ÇϾÇÀýÄ¡ÀÇ ¼³Ãø°æ»ç, ÇϾÇÀý
Ä¡ÀÇ Ä¡Á¶ºÎ ¼ø¼³Æø°æ ¹× symphysis widthÀÇ °¨¼Ò°¡ ³ªÅ¸³µ´Ù.
#ÃÊ·Ï#
The aim of this study was to evaluate the morphology of the mandibular symphysis
and anterior alveolar and skeletal d relationship under the influence of the rotational
growth pattern of mandible in skeletal Class¥² malocclusion. A total of 86 untreated
adult subjects were divided into two groups-forward rotational growth pattern group,
backward rotational growth pattern group-according to the suggestion of Skieller et al.
The antero-posterior position, vertical relationship, mandibular symphysis and anterior
alveolar and skeletal relationship were assessed on lateral cephalometric radiographs.
Mandibular symphysis and anterior alveolar and skeletal relationship in each subject
were studied and the following conclusions were drawn:
1. Concerning the antero-posterior position, forward rotational growth pattern group
showed significantly larger SNA, SNB. Concerning the vertical relationship, all
measurements showed statistically significant differences.
2. Forward rotational growth pattern group showed significantly larger IMPA MnAD,
backward rotational growth pattern group showed significantly larger MxABH.
3. There was no statistically significant difference in symphysis ratio to mandibular
plane between forward and backward rotational growth pattern group.
4. In the correlative analysis of rotational growth pattern of mandible and mandibular
symphysis, anterior alveolar of and skeletal relationship, statistically significant
correlations in overbite, IMPA, MnAD, symphysis width were showed.

Å°¿öµå

ȸÀü¼ºÀå; ÇϾÇÀ̺Î; »óÇϾÇÀýÄ¡; Á¦¥²±Þ ºÎÁ¤±³ÇÕ; rotational growth; symphysis; upper and lower anterior incisor; Class¥² malocclusion;

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