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A RADIOGRAPHIC STUDY OF FUSED AND GERMINATED TOOTH

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Abstract

º» ¿¬±¸´Â ³²ÀÚ 4,201¸í, ¿©ÀÚ 5,358¸í, ÃÑ 9,559¸íÀÇ Àü¾Ç±¸³»Ä¡±Ù´ÜÃÔ¿µ»çÁø°ú Æijë¶ó¸¶
ÃÔ¿µ»çÁø¿¡¼­ À¯ÇÕÄ¡¿Í ½Ö»ýÄ¡·Î Æǵ¶µÈ Ä¡¾ÆµéÀ» ´ë»óÀ¸·Î À̵éÀÇ ¹ß»ýÀ², È£¹ßºÎÀ§, À̵é
ÀÇ ¹ß»ýÀ¸·Î ÀÎÇÑ Èļӿµ±¸Ä¡ÀÇ °á¼ÕÀ², Ä¡°üºÎ Ä¡¾Æ¿ì½ÄÁõÀÇ ¹ß»ýÀ²À» °üÂûÇÏ°í ÇüÅ¿¡ µû
¸¥ ºÐ·ù¸¦ ½ÃµµÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. À¯ÇÕÀ¯Ä¡¿Í ¿µ±¸Ä¡, ½Ö»ýÀ¯Ä¡¿Í ¿µ±¸Ä¡ÀÇ ¹ß»ýÀ²Àº °¢°¢ 2.86%, 0.32%, 0.33%, 0.06%ÀÌ
¾úÀ¸¸ç, À̵éÀº ¿©ÀÚ¿¡¼­ ¸¹ÀÌ ¹ß»ýµÇ¾ú´Ù.
2. À¯ÇÕÀ¯Ä¡¿Í ¿µ±¸Ä¡´Â °¢°¢ 87.6%¿Í 88.8%°¡ ÇϾǿ¡¼­ ¹ß»ýµÇ°í, ÇϾÇÁ¿ìÃøÀýÄ¡¿Í °ß
Ä¡ºÎÀ§¿¡¼­ °¡Àå ¸¹ÀÌ ¹ß»ýµÇ¾ú´Ù. ¶ÇÇÑ ½Ö»ýÀ¯Ä¡´Â »ó¾Ç°ú ÇϾǿ¡ °¢°¢ 50%¾¿ÀÇ ¹ß»ýÀ²À»
º¸¿´À¸¸ç, »ó¾ÇÁßÀýÄ¡¿¡¼­ È£¹ßµÇ¾ú°í ½Ö»ý¿µ±¸Ä¡¿¡¼­´Â 3¿¹ÀÇ ¸ðµÎ°¡ ÇϾǿ¡¼­ ¹ß»ýµÇ¾ú´Ù.
3. À¯Ä¡ÀÇ À¯ÇÕÀ¸·Î ÀÎÇÑ Èļӿµ±¸Ä¡ÀÇ °á¼ÕÀ²Àº 43.8%À̾úÀ¸¸ç, »ó¾ÇÁÂÃøÁßÀýÄ¡¿Í ÃøÀý
Ä¡ºÎÀ§°¡ 85.7%, ÇϾǿìÃø°ßÄ¡¿Í ÃøÀýÄ¡ºÎÀ§°¡ 71.0%, ÇϾÇÁÂÃø°ßÄ¡¿Í ÃøÀýÄ¡ºÎÀ§°¡ 69.0%
ÀÇ °á¼ÕÀ²À» º¸¿´´Ù. ½Ö»ýÀ¯Ä¡·ÎÀÎÇÑ Èļӿµ±¸Ä¡ÀÇ °á¼ÕÀº ¹ß»ýµÇÁö ¾Ê¾Ò´Ù.
4. Ä¡°üºÎÀÇ Ä¡¾Æ¿ì½ÄÁõÀÇ ¹ß»ýÀ²Àº À¯ÇÕÀ¯Ä¡(42.3%), ½Ö»ýÀ¯Ä¡(18.8%), À¯ÇÕ¿µ±¸Ä¡(5.6%)
ÀÇ ¼øÀ̾úÀ¸¸ç, ½Ö»ý¿µ±¸Ä¡¿¡¼­´Â Ä¡¾Æ¿ì½ÄÁõÀÌ °üÂûµÇÁö ¾Ê¾Ò´Ù.
5. X¼±»çÁø¿¡¼­ Æǵ¶µÈ À¯ÇÕ¿µ±¸Ä¡, ½Ö»ýÀ¯Ä¡ ¹× ½Ö»ý¿µ±¸Ä¡ÀÇ ÇüÅ´ Type ¥¸ÀÌ °¡Àå
¸¹¾Ò°í, À¯ÇÕÀ¯Ä¡¿¡¼­´Â Type ¥°, Type ¥¸ÀÇ ¼øÀ̾ú´Ù.
#ÃÊ·Ï#
The incidence and several characteristic features of fused and geminated teeth were
studied radiographically, with full mouth periapical radiogram and pantomogram, in 4201
patients of mixed dentition and 5358 patients of permanent dentition.
The obtained results were as follows :
1. The prevalence was revealed to 2.86%, 0.32%, 0.33%, and 0.06% in deciduous fused
tooth, permanent fused tooth, deciduous geminated tooth and permanent geminated tooth
respectively, and these anomalies were occured in female more than male.
2. Fused teeth were observed predominantly in lower anterior teeth area, especially in
lateral incisor and canine region, and many cases of deciduous geminated tooth were
observed in upper central incisor region.
3. Congenital missing rates of succedaneous tooth in deciduous fused teeth were
57.1%, 85.7%, 71.0%, 69.0% in upper right and left central-lateral incisor regions, lower
right and left lateral incisor-canine regions, respectively.
4. Prevalence of dental caries was 42.3%, 18.8% and 5.6% in deciduous fused,
deciduous geminated and permanent fused tooth, respectively.
5. In classifying of fused and geminated teeth into 9 types, by following appearance
such as number of crown, root, pulp chamber and pulp canal of those teeth, it was
more favorable that Type I(2 crown, 2 root, 2 pulp chamber, 2 pulp canal) in deciduous
fused tooth and Type ¥¸(1 crown, 1 root, 1 pulp chamber, 1 pulp canal) in permanent
fused tooth, deciduous and permanent geminated tooth.

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