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A RADIOGRAPHIC STUDY OF SUPERNUMERARY TEETH

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Abstract

º» ¿¬±¸¿¡¼­´Â ÃÑ 69,442¸í (³²¼º 35,157¸í, ¿©¼º 34,285¸í)ÀÇ Ä¡±Ù´ÜX¼±»çÁø ¶Ç´Â Æijë¶ó
¸¶X¼±»çÁø¿¡¼­ °úÀ×Ä¡·Î Æǵ¶µÈ 1,300°³ÀÇ Ä¡¾ÆµéÀ» ´ë»óÀ¸·Î À̵éÀÇ ¹ß»ýÀ², ¼ºº°, ¿¬·É,
¹ß»ýºÎÀ§ ¹× X¼±»çÁøÀ» Á¶»ç ¡¤ºÐ¼®ÇÑ ¹Ù ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù
1. Àüü Á¶»ç´ë»ó 69,442¸í Áß °úÀ×Ä¡¸¦ º¸À¯ÇÑ È¯ÀÚ´Â 1,050¸í (1.5%)À̾úÀ¸¸ç, ÀÌÁß ³²¼º
ÀÌ 777¸í (74.0%), ¿©¼ºÀÌ 273¸í (26.0%)À¸·Î½á ¿©¼º¿¡ ºñÇØ ³²¼º¿¡¼­ ¸¹¾Ò´Ù.
2. °úÀ×Ä¡¸¦ °¡Áø 1,050¸í Áß 10´ë ¹Ì¸¸ÀÌ 448¸í (42.7%)À¸·Î °¡Àå ¸¹¾ÒÀ¸¸ç, 10´ë¿¡¼­
212¸í (20.2%), 20´ë¿¡¼­ 148¸í (14.1%), 40´ë¿¡¼­ 76¸í (7.2%)ÀÇ ¼øÀ¸·Î ¹ß»ýµÇ¾ú´Ù.
3. ¹ß»ýºÎÀ§º° ºÐÆ÷´Â »ó¾Ç¿¡ 1,283¸í(98.7%), ÇϾǿ¡ 17°³(1 3%)·Î½á °ÅÀÇ ´ëºÎºÐÀÇ °úÀ×
Ä¡°¡ »ó¾Ç¿¡¼­ ¹ß»ýµÇ¾úÀ¸¸ç, Á¤Áß°úÀ×Ä¡°¡ 1,171°³(90.1%)·Î½á °¡Àå ³ôÀº ¹ß»ýÀ²À» º¸¿´°í,
»ó¾ÇÃøÀýÄ¡ºÎ°¡ 41°³(3.1%), »ó¾Ç±¸ÈÄÄ¡°¡ 29°³(2.2%), »ó¾Ç±¸¹æÄ¡°¡ 19°³(1.5%) À̾ú´Ù.
4. ¸ÍÃâ°ú ¸Åº¹»óÅ´ ¸ÍÃâµÈ °ÍÀÌ 225°³(17.3%), ¸Åº¹µÈ °ÍÀÌ 1,075°³ (82.7%)·Î½á ´ëºÎ
ºÐÀÇ °úÀ×Ä¡°¡ ¸Åº¹µÇ¾î ÀÖ¾úÀ¸¸ç, Ä¡¾ÆºÎÀ§º°·Î´Â ÃøÀýÄ¡ºÎ¿¡¼­ ¹ß»ýµÈ °úÀ×Ä¡ÀÇ 36°³
(87.8%)°¡ ¸Åº¹µÊÀ¸·Î½á °¡Àå ³ôÀº ¸Åº¹À²À» º¸¿´´Ù.
5. ¸Åº¹µÈ °úÀ×Ä¡ 1,075°³ Áß ¸Åº¹¹æÇâÀº ¿ª À§Ä¡°¡ 678°³ (63.1%), Á¤À§Ä¡°¡ 195°³
(18.1%), °æ»çÀ§Ä¡°¡ 202°³ (18.8%)À̾úÀ¸¸ç, ¸Åº¹À§Ä¡´Â Á¤À§¹ýÀ» ½ÃÇàÇÑ 765°³ÀÇ °úÀ×Ä¡
Áß ±¸°³(¼³)Ãø¿¡ 651°³(85.0%), Áß¾ÓºÎ¿Í Çù(¼ø)Ãø¿¡ °øÈ÷ 57°³(7.5%)°¡ ¸Åº¹µÇ¾ú´Ù.
6. °úÀ×Ä¡ÀÇ ÇüÅ´ ÀÎÁ¢Ä¡¿Í À¯»çÇÑ Å©±â¿Í ÇüŸ¦ º¸ÀÌ´Â Ãß°¡Ä¡¾Æ°¡ 41°³(3.2%), ºñÁ¤
»óÀûÀÎ Å©±â¿Í ÇüŸ¦ º¸ÀÌ´Â ºÎÄ¡¾Æ°¡ 1,259°³(96.8%)À̾úÀ¸¸ç, Ä¡¾ÆºÎÀ§º°·Î´Â »ó¾ÇÃøÀýÄ¡
ºÎ¿Í ÇϾǼұ¸Ä¡ºÎ¿¡¼­ ³ôÀº À²·Î ÀÎÁ¢Ä¡¾Æ¿Í À¯»çÇÑ Å©±â¿Í ÇüŸ¦ º¸¿´´Ù.
7. ÀÎÁ¢Ä¡¾Æ ¹× ÁÖÀ§Á¶Á÷¿¡ ´ëÇÑ ¿µÇâÀº ÃÑ »ýÀÌ 5°³ (0.4%), Ä¡°£ÀÌ°³°¡ 138°³ (10.6%),
Ä¡¾ÆȸÀüÀÌ 70°³ (5.4%), ¸ÍÃâÀå¾Ö°¡ 59°³ (4.5%), Ä¡±ÙÈí¼ö°¡ 32°³(2.5%), ÇÔÄ¡¼º ³¶Á¾ÀÇ ¹ß»ýÀÌ 29°³ (2.2%) À̾ú´Ù.
#ÃÊ·Ï#
The purpose of this study was to evaluate the incidence and radiographic features of
1,300 cases of supernumerary teeth by means of the analysis of periapical radiograms
and/or pantomograms in 69,442 persons visited the Department of Oral Radiology, School
of Dentist Kyung Hee University during January 1980 to December 1989.
This study of supernumerary teeth revealed the following features:
1. The incidence of supernumerary tooth was revealed to be 1.5% in total examined
persons, and there was a higher incidence in males (74.0%) than in females (26.0%).
2. The supernumerary teeth were most frequently occurred in the 1 st decade (42.7%),
followed by the 2nd decades (20.2%), the 3rd decades (14.1%), and the 5th decades
(7.2%).
3. There was a higher incidence in the maxilla (98.7%) than in the mandible (1.3%),
and mesiodens (90.1%) was the most frequently occurred. The maxillary lateral incisor
lesion (3.1%) was next in order of frequency followed by maxillary distomolar (2.2%),
and maxillary paramolar (1.5%).
4. There was a higher incidence of the impaction (82.7%) than that of the eruption
(If.3%), and supernumerary tooth in lateral incisor region (87.8%) was the most
frequently impacted
5. The inverted impaction was occurred in 63.1%, the vertical impaction in 18.1%, and
the angulated impaction in 18.8%. In localization, a palatally (lingually) impacted
supernumerary tooth was occurred in 85.0%, and middle impacted and buccally (labially)
impacted supernumerary tooth showed the same incidence (7.5%).
6. A supplemental tooth was occurred in 3.2%, an accessory tooth in 96.8%, and a
supplemental tooth was the most frequently occurred in maxillary lateral incisor and
mandibular premolar region.
7. In effects of supernumerary tooth on adjacent tooth, crowding was occurred in
0.4%, Ciastema in ¡¤ 10.6%, rotation in 5.4%, eruption disturbance in 4.5%, root
resorption in 2.5%, and dentigerous cyst in 2.2%.

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