Àá½Ã¸¸ ±â´Ù·Á ÁÖ¼¼¿ä. ·ÎµùÁßÀÔ´Ï´Ù.

»ó¾Ç Á¦2À¯±¸Ä¡¿Í »ó¾Ç Á¦1´ë±¸Ä¡ÀÇ Ä¡°ü ÇüÅÂ: Ä¡¾Æ°èÃøÇÐÀû ¿¬±¸

MORPHOLOGICAL FEATURES OF THE CROWNS OF MAXILLARY SECOND PRIMARY MOLAR AND FIRST PERMANENT MOLAR: AN ODONTOMETRIC STUDY

´ëÇѼҾÆÄ¡°úÇÐȸÁö 2011³â 38±Ç 4È£ p.337 ~ 347
±èÁöÀÎ, ÇöÈ«±Ù, ±è¿µÀç, ±èÁ¤¿í, Àå±âÅÃ, ÀÌ»óÈÆ, ÇѼ¼Çö, ±èÁ¾Ã¶,
¼Ò¼Ó »ó¼¼Á¤º¸
±èÁöÀΠ( Kim Ji-In ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
ÇöÈ«±Ù ( Hyun Hong-Keun ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
±è¿µÀç ( Kim Young-Jae ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÁ¤¿í ( Kim Jung-Wook ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
Àå±âÅà( Jang Ki-Taeg ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
ÀÌ»óÈÆ ( Lee Sang-Hoon ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
ÇѼ¼Çö ( Hahn Se-Hyun ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÁ¾Ã¶ ( Kim Chong-Chul ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

À¯Ä¡ Ä¡°üÀÇ ±âº»ÀûÀÎ ±¸Á¶´Â ´ë°³ °è½Â ¿µ±¸Ä¡¸¦ ´à´Â´Ù. ±×·¯³ª Á¦2À¯±¸Ä¡´Â °è½Â ¿µ±¸Ä¡ÀÎ Á¦2¼Ò±¸Ä¡º¸´Ù ¿ÀÈ÷·Á Á¦1´ë ±¸Ä¡¿Í ´õ À¯»çÇÑ °æÇâÀÌ ÀÖ´Ù. ÀÌ¿¡ º» ¿¬±¸´Â Çѱ¹Àο¡¼­ »ó¾Ç Á¦2À¯±¸Ä¡¿Í Á¦1´ë±¸Ä¡ÀÇ Ä¡¾Æ°èÃøÇÐÀû ÀÚ·á(odontometric data)¸¦ ¾ò¾î µÎ Ä¡¾ÆÀÇ ÇüÅÂ¿Í Å©±â »çÀÌÀÇ ¿¬°ü¼ºÀ» »ìÆ캸°í, ³ª¾Æ°¡ ³²³à°£ÀÇ Â÷ÀÌÁ¡ À¯¹«¸¦ °íÂûÇØ º¸°íÀÚ ÇÏ¿´´Ù. ³²¾Æ 150¸í, ¿©¾Æ 150¸í ÃÑ 300¸íÀÇ ¸ðÇüÀ» ÀÌ¿ëÇÏ¿© »ó¾Ç Á¦2À¯±¸Ä¡¿Í »ó¾Ç Á¦1´ë±¸Ä¡ÀÇ ±Ù¿ø½É Ä¡°ü Æø°æ, Çù¼³Ãø Ä¡°ü Æø°æ, °¢ ±³µÎÀÇ Á÷°æ, ±³µÎÁ¤°£ °Å¸®¸¦ °èÃøÇÏ¿´°í, Ä¡°üÀÇ ±³ÇÕ¸é »çÁøÀ» ÃÔ¿µÇÏ¿© °¢ ±³µÎÁ¤ »çÀÌÀÇ °¢µµ¸¦ ÃøÁ¤ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù. 1. ³²¾Æ¿¡¼­ Protocone index, Paraconeindex, Distobuccal cusp(DBC)°¢, Mesiobuccal cusp(MBC)°¢Àº »ó¾Ç Á¦1´ë ±¸Ä¡¿Í Á¦2À¯±¸Ä¡ »çÀÌ¿¡ Åë°èÀû À¯ÀÇÂ÷°¡ °üÂûµÇÁö ¾Ê¾Ò°í(p>0.05), ÁߵÀÇ »ó°ü°ü°è°¡ È®ÀεǾú´Ù. 2. ¿©¾Æ¿¡¼­ crown index, Distobuccal cusp(DBC)°¢, Mesiobuccal cusp(MBC)°¢Àº »ó¾Ç Á¦1´ë±¸Ä¡¿Í Á¦2À¯±¸Ä¡ »çÀÌ¿¡ Åë°èÀû À¯ÀÇÂ÷°¡ °üÂûµÇÁö ¾Ê¾Ò°í(p>0.05), ÁߵÀÇ »ó°ü°ü°è°¡ È®ÀεǾú´Ù. 3. ³², ¿© ¸ðµÎ¿¡¼­ Distobuccal cusp(DBC)°¢, Mesiobuccal cusp(MBC)°¢Àº µÎ Ä¡¾Æ »çÀÌ¿¡ À¯ÀÇÇÒ¸¸ÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò°í(p>0.05), Distolingual cusp(DLC)°¢¿¡¼­´Â Åë°èÀû À¯ÀÇÂ÷°¡ °üÂûµÇ¾ú´Ù(p<0.01). 4. ´ëºÎºÐÀÇ °èÃøÄ¡¿¡¼­ ³²³à Â÷À̸¦ ³ªÅ¸³ÂÁö¸¸, Distobuccal cusp (DBC)°¢Àº »ó¾Ç Á¦1´ë±¸Ä¡¿Í Á¦2À¯±¸Ä¡ ¸ðµÎ¿¡¼­ ³²³à Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù(p>0.05).

The basic structure of the primary crowns usually resemble their succeeding permanent teeth. However, maxillary second primary molars resemble ipsilateral first permanent molars. Accordingly in this study, odontometric data of the two teeth was obtained, then analyzed to verify the morphological relationship and sex difference between the two teeth. Dental study casts were examined for their mesiodistal and buccolingual width of the crowns, diameter of each cusps, and intercuspal distances. Photographs of the crowns were taken to measure the angles between each cusp tip. The results are as follows : 1. In boys, PrI, PaI, DBC angle, and MBC angle did not show any statistically significant difference between the two teeth(p>0.05), and moderate level of correlations were observed. 2. In girls, crown index, DBC angle, and MBC angle of the two teeth did not show any statistically significant difference(p>0.05), and moderate level of correlations were recognized. 3. Measurements that did not show statistically significant difference between the two teeth in both boys and girls were DBC angle and MBC angle(p>0.05). In DLC angle, however, statistically significant difference was observed(p<0.01). 4. Most of the measurements showed sex differences, except DBC angle, which did not show any sex difference in both teeth(p>0.05).

Å°¿öµå

»ó¾Ç Á¦1´ë±¸Ä¡; »ó¾Ç Á¦2À¯±¸Ä¡; Ä¡¾Æ°èÃø; ÇüÅÂ; »ó°ü°ü°è
Maxillary first permanent molar; Maxillary second primary molar; Odontometry; Morphology; Correlation

¿ø¹® ¹× ¸µÅ©¾Æ¿ô Á¤º¸

  

µîÀçÀú³Î Á¤º¸

KCI