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SKELETAL MATURITY AND MANDIBULAR THIRD MOLAR DEVELOPMENT IN CLASS III MALOCCLUSION

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°­±Ù¿µ ( Kang Keun-Young ) - Àü³²´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
ÃÖ³²±â ( Choi Nam-Ki ) - Àü³²´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
±è¼±¹Ì ( Kim Seon-Mi ) - Àü³²´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
¾ç±ÔÈ£ ( Yang Kyu-Ho ) - Àü³²´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

º» ¿¬±¸´Â I±Þ ºÎÁ¤±³ÇÕ°ú III±Þ ºÎÁ¤±³ÇÕ ¾î¸°ÀÌÀÇ ¼ö¿ÏºÎ °ñ¼º¼÷ ´Ü°è¿Í ÇÏ¾Ç Á¦3´ë±¸Ä¡ ¹ßÀ°À» ºñ±³.Æò°¡ÇÏ°íÀÚ ÇÏ¿´´Ù. À̸¦ À§ÇØ Àü³²´ëÇб³º´¿ø ¼Ò¾ÆÄ¡°ú¿¡ ³»¿øÇÑ È¯ÀÚµé·Î 8¼¼ºÎÅÍ 15¼¼ »çÀÌÀÇ Angle I±Þ ºÎÁ¤±³ÇÕÀ» Áö´Ñ ³²ÀÚ 149¸í, ¿©ÀÚ 155¸í ±×¸®°í Angle III±Þ ºÎÁ¤±³ÇÕÀ» Áö´Ñ ³²ÀÚ 153¸í, ¿©ÀÚ 155¸í, ÃÑ 612¸íÀ» ´ë»óÀ¸·Î ÇÏ¿´À¸¸ç °ñ¼º¼÷ ´Ü°è Æò°¡¸¦ À§ÇØ ¼ö¿ÏºÎ »çÁøÀ» ÀÌ¿ëÇÑ FishmanÀÇ ¹æ¹ýÀ» »ç¿ëÇÏ¿´°í ÇÏ¾Ç Á¦3´ë±¸Ä¡ÀÇ ¹ßÀ° ´Ü°è¸¦ Æò°¡Çϱâ À§ÇØ OrthopantomogramÀ» ÀÌ¿ëÇÑ Gat µîÀÇ New Six-Developmental-Stage ¹æ¹ýÀ¸·Î Æǵ¶ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù. 1. °ñ¼º¼÷ ´Ü°è´Â I±Þ ºÎÁ¤±³ÇÕ°ú III±Þ ºÎÁ¤±³ÇÕ±º ¸ðµÎ Àü¹ÝÀûÀ¸·Î ¿©ÀÚ°¡ ³²ÀÚº¸´Ù ºü¸£³ª(p<0.05) ÇÏ¾Ç Á¦3´ë±¸Ä¡ÀÇ ¼®È¸È­ ´Ü°è´Â ¼ºº° Â÷ÀÌ°¡ ¾ø¾ú´Ù. 2. ³²³àº° °ñ¼º¼÷ ´Ü°è¿Í ÇÏ¾Ç Á¦3´ë±¸Ä¡ÀÇ ¼®È¸È­ ´Ü°è´Â I±Þ°ú III±Þ ºÎÁ¤±³ÇÕ±º °£¿¡¼­ À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù. 3. I±Þ ºÎÁ¤±³ÇÕ°ú ¥²±Þ ºÎÁ¤±³ÇÕ±ºÀÇ ¼ö¿ÏºÎ °ñ¼º¼÷ ´Ü°è¿Í ÇÏ¾Ç Á¦3´ë±¸Ä¡ ¼®È¸È­ ´Ü°è »çÀÌÀÇ »ó°ü°ü°è´Â µÎ ±º¸ðµÎ ³ôÀº »ó°ü¼ºÀ» º¸¿´´Ù(p<0.01). 4. I±Þ ºÎÁ¤±³ÇÕ°ú III±Þ ºÎÁ¤±³ÇÕ±ºÀÇ ÇÏ¾Ç Á¦3´ë±¸Ä¡ ¼®È¸È­ ´Ü°è¿Í ¿¬·É»çÀÌÀÇ »ó°ü°ü°è´Â µÎ ±º ¸ðµÎ ³ôÀº »ó°ü¼ºÀ» º¸¿´´Ù(p<0.01). ÀÌ»óÀÇ °á°ú·Î ¼ö¿ÏºÎ °ñ¼º¼÷µµ¿Í ÇÏ¾Ç Á¦3´ë±¸Ä¡ ¹ßÀ°Àº I±Þ ºÎÁ¤±³ÇÕ°ú III±Þ ºÎÁ¤±³ÇÕ±º °£¿¡ Â÷ÀÌ°¡ ¾ø¾ú´Ù.

The purpose of this study was to investigate the relationship of the skeletal maturity of hand-wrist and the development of mandibular third molar in subjects with class I and class III malocclusion. The subjects used in this study were 304 children(149 boys, 155 girls) with class I malocclusions and 308 children( 153 boys, 155 girls) with class III malocclusions, ranged from 8 to 15 years of age. Hand-wrist radiographs and panoramic radiographs were used to evaluate the stage of skeletal maturity and teeth development. Fishman¡¯s method for the skeletal maturity stages of the hand-wrist and new six-developmental-stage method for the calcification stages of mandibular third molars were analyzed. The results were as follows : 1. In subjects with class I and class III malocclusion, skeletal maturity of the hand-wrist occured earlier in females than in males(p<0.05), while the calcification stages of mandibular third molars were no significant gender differences. 2. There were no significant differences between the groups, when comparing the skeletal maturity stages of the hand-wrist and the calcification stages of mandibular third molars between subjects with the class I and the class III malocclusion. 3. The correlation coefficients between the calcification stages of mandibular third molars and the skeletal maturity stages of the hand-wrist in subjects with class I and class III malocclusion showed a high interrelationship(p<0.01). 4. The correlation coefficients between the calcification stages of mandibular third molars and chronological age in subjects with class I and class III malocclusion showed a high interrelationship (p<0.01). As a result, there were no significant differences between class I and class III malocclusion group for skeletal maturity of the hand-wrist and third molar development.

Å°¿öµå

III±Þ ºÎÁ¤±³ÇÕ;¼ö¿ÏºÎ °ñ¼º¼÷ ´Ü°è;ÇÏ¾Ç Á¦3´ë±¸Ä¡ ¹ßÀ°
Class III malocclusion;Skeletal maturity of hand-wrist;Development of mandibular third molar

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