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Comparison of arch form between Koreans and Egyptians

Korean Journal of Orthodontics 2010³â 40±Ç 5È£ p.334 ~ 341
Àå°©¼ö, ¼®°æÀº, Bayome Mohamed, ±èÀ±Áö, ±è¼ºÈÆ, ±¹À±¾Æ,
¼Ò¼Ó »ó¼¼Á¤º¸
Àå°©¼ö ( Jang Kab-Soo ) - °¡Å縯´ëÇб³ ÀÓ»óÄ¡ÀÇÇдëÇпø ±³Á¤Çаú
¼®°æÀº ( Suk Kyung-Eun ) - °¡Å縯´ëÇб³ ¼­¿ï¼º¸ðº´¿ø Ä¡°ú±³Á¤°ú
 ( Bayome Mohamed ) - °¡Å縯´ëÇб³ ÀÓ»óÄ¡ÀÇÇдëÇпø ±³Á¤Çаú
±èÀ±Áö ( Kim Yoon-Ji ) - °¡Å縯´ëÇб³ ¼­¿ï¼º¸ðº´¿ø Ä¡°ú±³Á¤°ú
±è¼ºÈÆ ( Kim Seong-Hun ) - °æÈñ´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç
±¹À±¾Æ ( Kook Yoon-Ah ) - °¡Å縯´ëÇб³ ¼­¿ï¼º¸ðº´¿ø Ä¡°ú±³Á¤°ú

Abstract

º» ¿¬±¸ÀÇ ¸ñÀûÀº Çѱ¹Àΰú ÀÌÁýÆ®ÀÎÀÇ Angle¾¾ I±Þ, II±Þ, III±Þ ºÎÁ¤±³ÇÕ±º¿¡¼­ ÇϾÇÄ¡¿­±ÃÀÇ Å©±â¿Í ÇüÅÂÀû Ư¼ºÀ» »óÈ£ ºñ±³ ºÐ¼®ÇÏ°íÀÚ ÇÏ¿´´Ù. Çѱ¹ÀÎ ºÎÁ¤±³ÇÕÀÚ 368¸í(114 Class I, 119 Class II, and 135 Class III)°ú ÀÌÁýÆ®ÀÎ ºÎÁ¤±³ÇÕÀÚ 94¸í(35 Class I, 32 Class II and 27 Class III)À» ´ë»óÀ¸·Î ÇÏ¿´´Ù. Ä¡·á Àü ÇÏ¾Ç Ä¡¿­ ¸ðÇüÀ» º¹»çÇÑ »çÁø¿¡¼­ 13°³ÀÇ ÀÎÁ¢ÇÑ Á¢Ã˸鿡¼­ °¡Àå ÇùÃø¿¡ À§Ä¡ÇÑ Á¡µéÀ» ÁÂǥȭÇÑ ÈÄ ÇÏ¾Ç Ä¡¾ÆÀÇ µÎ²² ÀÚ·á¿¡ ±Ù°ÅÇÏ¿© ÀÓ»ó ºê¶óÄÏ Á¡µéÀ» ¼³Á¤ÇÏ¿´°í 4°³ÀÇ ¼± °èÃø°ú 2°³ÀÇ ºñÀ²À» ÃøÁ¤ÇÏ¿´´Ù. Ä¡¿­±Ã ÇüŸ¦ tapered, ovoid, squaredÀÇ 3°¡Áö·Î ºÐ·ùÇÏ¿© µÎ ÀÎÁ¾ °£ ºÐÆ÷ Ư¼º¿¡ °üÇÏ¿© ºñ±³ÇÏ¿´´Ù. ÀÌÁýÆ®ÀÎÀº Çѱ¹Àκ¸´Ù ´ë±¸Ä¡ °£ Æø°æ°ú °ßÄ¡ °£ Æø°æÀÌ À¯ÀǼº ÀÖ°Ô Á¼¾ÒÀ¸¸ç (p £¼ 0.001), ´ë±¸Ä¡ °£ Àå°æ°ú °ßÄ¡ °£ Àå°æÀÌ ´õ ª¾Ò´Ù (p £¼ 0.001). ÀÌÁýÆ®Àο¡¼­´Â 3°¡ÁöÀÇ Ä¡¿­±Ã ÇüÅ°¡ µ¿µîÇÑ ºñÀ²·Î ³ªÅ¸³µÀ¸³ª (p = 0.46), Çѱ¹Àο¡¼­´Â square arch form (46.7%)ÀÌ °¡Àå ºó¹øÇÏ°Ô ³ªÅ¸³µ°í, tapered arch formÀÌ °¡Àå Àû°Ô ³ªÅ¸³µ´Ù(18.8%). º» ¿¬±¸ÀÇ °á°ú´Â ±â¼ºÇ°ÀÇ ÃÊź¼º È£¼±À» ¼±ÅÃÇÒ ¶§ ÀÎÁ¾ °£ÀÇ Â÷ÀÌ¿¡ ´ëÇÑ À¯ÀÍÇÑ Á¤º¸¸¦ Á¦°øÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î »ý°¢µÈ´Ù.

Objective: The purpose of this study was to evaluate morphologic differences in the mandibular arch between
Egyptian and Korean subjects.

Methods: The Egyptian sample consisted of 94 mandibular casts (35 Class I, 32 Class II and 27 Class III). The Korean sample consisted of 462 mandibular casts (114 Class I, 119 Class II, and 135 Class III). The most facial portion of 13 proximal contact areas was digitized from photocopied images of the mandibular dental arches. Clinical bracket points were calculated for each tooth. The subjects were grouped according to arch form to compare the frequency distribution of the 3 arch forms between the ethnic groups in each Angle classification.

Results:Egyptians had significantly narrower intermolar and intercanine widths (p£¼ 0.001), and shallower intermolar and intercanine depths (p £¼ 0.001) than Koreans. There was an even frequency istribution of the 3 arch forms within the Egyptian group (p = 0.46). However, in the Korean group, the most frequent arch form was the square arch form (46.7%), while the frequency of the tapered arch form wassignificantly lower (18.8%).

Conclusions: These results might provide helpful information in evaluating morphologic differences between ethnic groups in selection of preformed superelastic archwires.

Å°¿öµå

Ä¡¿­±Ã ÇüÅÂ; Ä¡¿­±Ã Å©±â; ÀÎÁ¾Áý´Ü; Çѱ¹ÀÎ; ÀÌÁýÆ®ÀÎ
Archform; Arch dimension; Ethnic group; Korean; Egyptian

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