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THE STUDY ON THE PREDICTION OF THE MESIODISTAL DIAMETERS OF UNERUPTED CANINES AND PREMOLARS IN KOREAN MALE AND FEMALE

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Abstract

º» ¿¬±¸´Â ¼­¿ï½Ã Ä¡°úÀÇ»çȸ¿¡¼­ ÁÖ°üÇÑ °ÇÄ¡¾Æµ¿ ¼±¹ß´ëȸ Èĺ¸ÀÇ °æ¼®°í¸ðÇü 162½ÖÀ» ºÐ¼®ÇÏ¿© ¼ºº°¿¡ µû¶ó ÇÏ¾Ç ¿µ±¸ 4ÀüÄ¡ ±Ù¿ø½É Ä¡°ü Æø°æÇÕÀÇ °èÃøÄ¡¿¡¼­ »ó¾Ç ¹× ÇϾÇÀÇ ÆíÃø ¿µ±¸ °ßÄ¡ ¹× Á¦ 1, 2¼Ò±¸Ä¡ ±Ù¿ø½É Æø°æÇÕÀ» ÃßÁ¤Çϴ ȸ±Í¹æÁ¤½Ä°ú È®·üÇ¥¸¦ ±¸ÇÏ¿´´Ù. ±×¸®°í ¼ºº°°£ Â÷À̸¦ ºñ±³ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. ³²ÀÚ¿Í ¿©ÀÚ ¸ðµÎ µ¿ÀÏÇÑ ¾Ç±Ã ³»¿¡¼­ Á¿ìÃø ¿µ±¸ °ßÄ¡ ¹× ¼Ò±¸Ä¡ÀÇ Æø°æÂýÀº À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù(p>0.05). ³²³à°£ÀÇ »óÇÏ¾Ç Á¿ìÃø ¿µ±¸ °ßÄ¡ ¹× ¼Ò±¸Ä¡ÀÇ Æø°æÇÕÀ» ºñ±³ÇÑ °á°ú ³²ÀÚ°¡ ¿©ÀÚº¸´Ù- Å©°Ô ³ªÅ¸³µ´Ù(p<0.01).
2. ¼ºº°¿¡ µû¶ó ÇÏ¾Ç ¿µ±¸ 4ÀüÄ¡ÀÇ ±Ù¿ø½É Ä¡°ü Æø°æÇÕÀÇ °èÃøÄ¡(x)¿¡¼­ »ó¾Ç ¹× ÇϾÇÀÇ ÆíÃø ¿µ±¸ °ßÄ¡ ¹× Á¦ 1, 2¼Ò±¸Ä¡ÀÇ ±Ù¿ø½É Æø°æÇÕ(y)À» ÃßÁ¤Çϱâ À§ÇÑ È¸±Í ¹æÁ¤½ÄÀº ´ÙÀ½°ú °°¾Ò´Ù.
³²ÀÚ »ó¾Ç ¿µ±¸ °ßÄ¡ ¹× ¼Ò±¸Ä¡ Æø°æÇÕ : y=10.45+0.53x
³²ÀÚ ÇÏ¾Ç ¿µ±¸ °ßÄ¡ ¹× ¼Ò±¸Ä¡ Æø°æÇÕ : y=10.07+0.5lx
¿©ÀÚ »ó¾Ç ¿µ±¸ °ßÄ¡ ¹× ¼Ò±¸Ä¡ Æø°æÇÕ : y=12.65+0.42x
¿©ÀÚ ÇÏ¾Ç ¿µ±¸ °ßÄ¡ ¹× ¼Ò±¸Ä¡ Æø°æÇÕ : y=11.70+0.42x
³²ÀÚ+¿©ÀÚ »ó¾Ç ¿µ±¸ °ßÄ¡ ¹× ¼Ò±¸Ä¡ Æø°æÇÕ : y=11.01+0.50x
³²ÀÚ+¿©ÀÚ ÇÏ¾Ç ¿µ±¸ °ßÄ¡ ¹× ¼Ò±¸Ä¡ Æø°æÇÕ : y=9.87+0.51x

The purpose of this study was to establish regression equations and probability charts for predicting the sum of mesiodistal crown diameters of unerupted unilateral canine and premolars from the sum of mesiodistal crown diameters of four mandibular incisors in Korean male and female. The plaster casts of 162 children( 75 boys and 87 girls) among the contestees in 1994-2001 Healthy Dentition Contest in Seoul were measured. Sex differences are compared and the following results were obtained:
1. Bilateral comparison of sum of widths of permanent canine and premolars showed no significant differences for either sex(p)0.05). Sum of widths of permanent canine and premolars of male were significantly larger than that of female(p(0.01).
2. Regression equations for the prediction of sum of widths of permanent canine and premolars in each sex were as follows:
Male EMaxillary 345 : y = 10.45 + 0.53x
Male E Mandibular 345 : y=10.07 + 0.51x
Female EMaxillary 345 : y = 12.65 + 0.42x
Female EMandibular 345 : y = 11. 70 + 0.42x
Male+female E Maxillary 345 : y =11.01 + 0.50x
Male+female EMandibular 345 : y=9.87+0.51x

Å°¿öµå

È¥ÇÕÄ¡¿­ ºÐ¼®;ȸ±Í¹æÁ¤½Ä;È®·üÇ¥;Ä¡¾ÆÅ©±â;¼ºº°Â÷;Mixed dentition analysis;Regression equation;Probability chart;Tooth size;Sex differences

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