韓國人 永久齒 萌出時期 關한 統計學的 硏究
STATISTIC STUDY ON ERUPTION TIME OF PERMANENT TEETH IN KOREA
소속 상세정보
차문색(車文索)/Moon Je Won
문제원(文濟源)/Cha Moon Ho
KMID : 0358919840110010025
Abstract
結論
著者는 서울市內 幼淮園, 國民學校 및 淸州地域 國民學校의 滿 5才∼13才사이의 兒臺
15,671名을 對象으로 永久齒 萌出時期 및 萌出順位에 關해 硏究하여 다음과 같은 結論을 얻
었다.
1. 女子가 男子에 比하여 永久齒 萌出時期가 平均 0.45年 발랐다.
2. 永久街의 50% 萌出人 指數는 다음과 같았다.
上顎에서
中切齒 : 7.37年
側切齒 : 8.50年
犬 齒 : 10.83年
第一小臼齒 : 10.30年
第二小臼齒 : 11.09年
第一大臼齒 : 6.49年
第二大臼齒 : 12.79年
下顎에서
中切齒 : 6.40年
側切齒 : 7.41年
犬 齒 : 10.18年
第一小臼齒 : 10.26年
第二小臼齒 : 11.15年
第一大臼齒 : 6.32年
第二大臼齒 : 12.05年
3. 永久齒 萌出順位는 다음과 같았다.
男子에서
下顎第一大臼齒, 下鄂中切齒→上顎第一大臼齒→上顎中切齒→下顎側切齒→上顎側切齒→下
顎犬齒, 上下顎第一小臼齒→上顎犬齒→上下顎第二小臼齒→下顎第二大臼齒→上顎第二大臼齒
의 順이었고
女子에서
下顎第一大臼齒, 下顎中切齒→上顎第一大臼齒→下顎側切齒, 上顎中切齒→上鄂側切齒→下顎
犬齒, 上下鄂第一小臼齒→上顎犬齒→上下顎第二小臼齒→下顎第二大臼齒→上顎第二大臼齒의
順이었다.
4. 下顎齒의 萌出時期는 上顎의 同名齒보다 平均 0.73年 빠르나 第一小臼齒는 거의 비슷했
고 第二小關齒는 오히려 0.06 年 느렸다.
5. 萌出時期나 順位에 있어서 左, 右側 齒牙의 顯著한 差異는 없었다.
6. 永久齒 萌出時期는 1963年에 調査한 車의 報告보다 大體로 달라진 傾向을 보였다.
#초록#
The author has sought to determine the time and the sequence of permanent teeth
eruption in Korean children. The study group consisted of 15,671 healthy children (male
8,015; female 7,656) aged 5-13 years old who lived in Seoul or Cheongju.
The results were as follows:
1. The eruption times of permanent teeth were 0.45 years earlier in females than in
males.
2. The ages corresponding to ER50 of permanent teeth were as follows:
In Maxilla
1) central incisor was 7.37yrs
2) lateral incisor was 8.50yrs
3) canine was 10.83yrs
4) 1st premolar was 10.30yrs
5) 2nd premolar was 11.09yrs
6) 1st molar was 6.49yrs
7) 2nd molar was 12.79yrs
In Mandible
1) central incisor was 6.40yrs
2) lateral incisor was 7.41yrs
3) canine was 10.18yrs
4) 1st premolar was 10.26yrs
5) 2nd premolar was 11.15yrs
6) 1st molar was 6.32yrs
7) 2nd molar was 12.05yrs
3. The eruption sequence of permanent teeth by Z-test was as follow:
In Male
1st : Mandibular 1st molar, and Mandibular central incisor
2nd : Maxillary 1st molar
3rd : Maxillary central incisor
4th : Mandibular lateral incisor
5th : Maxillary lateral incisor
6th : Mandibular canine, Maxillary and Mandibular 1st premolar
7th : Maxillary canine
8th : Maxillary and Mandibular 2nd premolar
9th : Mandibular 2nd molar
10th : Maxillary 2nd molar
In Female
1st : Mandibular 1st molar, and Mandibular central incisor
2nd : Maxillary 1st molar.
3rd : Mandibular lateral incisor, Maxillary central incisor
4th : Maxillary lateral incisor
5th : Mandibular canine, Maxillary and Mandibular 1st premolar
6th : Maxillary canine
7th : Maxilary and Mandibular 2nd premolar
8th : Mandibular 2nd molar
9th : Maxil1ary 2nd molar
4. The corresponding permanent teeth in the mandible generally erupted earlier than
the corresponding permanent teeth in the maxilla by an average of 0.73 years, but the
mean eruption time of mandibular 1st premolars was almost the same as those of
maxillary 1st premolars, and the mean eruption time of mandibular 2nd premolars was
0.06 years later than those of maxillary 2nd premolars.
5. There is no significant difference between left and right arch in the eruption time
and sequence.
6. Generally, the ages of permanent teeth eruption tended to be earlier than those of
Dr. Cha’s data from 1963.
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