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A RADIOLOGICAL STUDY ON THE TOOTH SHAPE ANOMALY

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Abstract

1989³â 3¿ùºÎÅÍ 1993³â 2¿ù±îÁö °æºÏ´ëÇб³º´¿ø Ä¡°ú¿¡ ³»¿øÇÑ 12¼¼ ÀÌ»óÀÇ 6,082¸íÀÇ ±¸
³»Àü¾Ç Ç¥Áعæ»ç¼±»çÁøÀ» Æǵ¶ÇÏ°í Ä¡¾ÆÀÇ ÇüÅÂÇÐÀû ÀÌ»óÀ» Á¶»çÇÏ¿© ´ÙÀ½ÀÇ °á·ÐÀ» ¾ò¾ú
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1.Ä¡¾ÆÇüÅ ÀÌ»óÀÇ ¹ß»ýºóµµ´Â ´Ù¾çÇÏ°Ô ³ªÅ¸³µÀ¸¸ç, °¡Àå ³ôÀº ¹ß»ýºóµµÀÇ Ä¡¾ÆÇüÅ ÀÌ»ó
Àº ¸¸°îÄ¡(20.14%)¿´À¸¸ç, ´ÙÀ½À¸·Î Ä¡³»Ä¡(3.02%), Àü»óÄ¡(1.48%), Àå¼öÄ¡(0.34%), Ä¡¿ÜÄ¡
(0.33%), Å»·Ð ±³µÎ(0.20%), À¶ÇÕ(0.07%)ÀÇ ¼øÀ̾ú°í, ½Ö»ýÄ¡´Â °üÂûµÇÁö ¾Ê¾Ò´Ù.
2. Àü»óÄ¡¿Í Ä¡¿ÜÄ¡ ±×¸®°í ¸¸°îÄ¡´Â ¿©¼º¿¡¼­ È£¹ßµÇ¾ú°í, Ä¡³»Ä¡, Àå¼öÄ¡, Å»·Ð±³µÎ, À¶
ÇÕÀº ³²¼º¿¡¼­ È£¹ßµÇ¾ú´Ù.
3. Ä¡¾ÆÇüÅ ÀÌ»óÀº ÆíÃø¼ºÀ¸·Î ³ªÅ¸³ª´Â °æ¿ì°¡ ´ëºÎºÐÀ̾úÀ¸¸ç, Ä¡¿ÜÄ¡¿Í Àå¼öÄ¡´Â ¾çÃø
¼ºÀ¸·Î È£¹ßµÇ¾ú´Ù.
4. Àü»óÄ¡, Ä¡³»Ä¡, Å»·Ð±³µÎ´Â »ó¾Ç ÃøÀýÄ¡¿¡¼­ °¡Àå È£¹ßµÇ¾ú°í, Ä¡¿ÜÄ¡´Â ÇÏ¾Ç ¼Ò±¸Ä¡,
Àå¼öÄ¡´Â »ó¾Ç Á¦1´ë±¸Ä¡, ¸¸°îÄ¡´Â »ó¾Ç Á¦1¼Ò±¸Ä¡ ±×¸®°í À¶ÇÕÀº ÇÏ¾Ç ÀüÄ¡¿¡¼­ °¡Àå È£
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The purpose of this study was to evaluate the prevalence and distribution according
to the types of tooth shape anomalies in permanent teeth of 6,082 persons by means of
analysis of the full mouth periapical radiographs. And the following results were
obtained:
1. Among tooth shape anomalies, the highest incidence was observed on dilaceration
(20.14%), foll owed by dens invaginatus(3.02%), peg lateralis(1.48%), taurodontism
(0.34%), dens evaginatus (0.33%), talon cusp(0.20%), fusion(0.07%) and gemination(0%)
in descending order of frequency.
2. Peg lateralis, dens invaginatus and dilaceration occurred more prevalent in females,
and other types of tooth shape anomalies occurred more prevalent in males.
3. Dens evaginatus and taurodontism occurred with bilateral tendency, but other
anomalies occured with unilateral tendency.
4. As to the involved teeth, maxillary lateral incisors were the most frequently
involved teeth on peg lateralis, dens invaginatus and talon cusp. And the mandibular
premolars were the most frequently involved teeth on dens evaginatus, the maxillary
first molars were on taurodontism, the maxillary second premolars were on dilaceration,
and the mandibular incisors and canines were on fusion.

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