韓國人 乳齒列期 兒童의 齒穹크기 및 形態變化에 關한 硏究
A STUDY ON THE GROWTH CHANGES OF DENTAL ARCH DIMENSiON AND SHAPE DURING THE DECIDUOUS DENTITiON PERIOD IN KOREAN CHILDREN.
소속 상세정보
송도원(宋度源)/Do Won Song
KMID : 0358919870140010013
Abstract
結 論
著者는 3세부터 6세까지의 男女兒童 660 명을 對象으로 上下顎 경석고모형 1,105個를 계
측하고 齒穹福徑, 長徑 및 周圍徑을 계측하고 齒穹指數를 分析한 結果 다음과 같은 結論을
얻었다.
1 . 齒穹幅徑 :
(1)齒鳶惰徑은 연령이 증가함에 따라 男女 공히 增加하였다.
(2)齒寒幅徑은 上下顎 공히 男兒가 女兒에 비해 컸다.
(3)上顎穹幅經은 下顎穹 惰涇보다 顯著히 컸다.
2 . 齒穹長徑 :
(1)齒業長徑은 연령이 增加함에 따라 總齒穹長徑이 감소하였으며, 이는 前方部 長徑의 감
소에 의한 것이고, 後淪部長徑은 變化를 인정 할 수 없었다.
(2)齒穹長徑은 上顎에서는 總齒穹長徑, 後方部 長徑에서 男兒가 女兒보다 컸고 下顎은 男
女間의 차이를 인정할 수 없었다.
(3)上顎穹長經은 下顎穹의 長經보다 顯著히 컸다.
3 .齒穹周투구圍徑 :
(1)齒弩周圍徑은 연령이 增加함에 따라 男兒의 경우 上·下顎 補方部周圍涇은 增加하였고
女兒의 경우 下顎에서 總齒穹周冕圍徑 및 前方部周隱徑이 增加하였다.
2)齒穹周圍徑은 上顎에서 總齒穹周圍徑은 전연령을 통하여 男兒가 女兒보다 컸으나, 下顎
에서는 그 차이를 인정할 수 없었다.
(3)上顎의 齒穹周團徑은 下顎의 齒穹周圍徑보다 顯著히 컸다.
4 . 齒寒指數 :
(1)總齒穹指數(WEE/L):
上下顎에서 공히 乳齒列期를 통해 전체 齒穹形態가 넓어졌고, 上顎이 下顎에 비해 더 넓
었다.
2)前方部齒穹指數(LAC/WCC):
上·下顎에서 兒女 공히 前方部 齒穹形態가 넓어졌으며, 하악이 上顎에 비해 더 넓은 形
態로 되었다.
(3)後方部齒穹指數 (WCC/UTEE ) :
上·下顎에서 공히 離開度가 增加하였고, 下顎이 上顎에 비해 離開褻度가 컸다.
(4)齒穹長徑指數 ( LAC/LCE ) :
上 ·下痘 공히 前方部長經이 後方部長經에 비해 감소하는 變化를 하였고, 下顎이 上顎에
비해 後方部長經에 대한 前方部長經의 비율이 짧았다.
(5)男女間에 있어서 齒穹指數 차이는 인정할 수 없었다.
#초록#
The purpose of this study is to analyze the changes of dental arch dimension and
shape during the deciduous dentition period.
Dental arch dimension was divided into 3 categories; width, length and circumference.
Arch index was taken to analyze the changes of dental arch shape.
1105 stone models of maxillary and mandibular arches obtained from the children from
3 to 6 years of age were measured.
The results were as follows;
1. Arch width;
The widths of dental arches were increased with age both in rrlales and in females.
2. Arch length:
Total arch lengths were decreased with age. It was due to decrease of anterior arch
lengths because there were no notable changes in posterior arch lengths. The arches of
males were longer than those of females in upper arches at total arch length and
posterior arch length, but no notable sex differences were seen in lower arches.
3. Arch circumference:
Upper and lower anterior circumferences in males, lower anterior and total arch
circum-ferences in females were increased with age. Total arch circumferences of males
were longer than those of females in upper arches, but no notable sex differences were
seen in lower arches. Upper arches were definitely longer than lower arches.
4. Arch index:
Total arch index (WEE/L); Total arch forms were seen to become relatively broad
between 3 and 6 years of age both in males and in females. Upper arches were broader
than lower arches.
Anterior arch index (LAL/WCC); Anterior arch forms were seen to become relatively
flat between 3 and 6 years both in males and in females. Lower arches were flatter
than upper arches.
Posterior arch index (WCC/WEE); Forms of posterior sections were seen to become
more divergent in both arches.
Arch length index (LAC/LCE); Arch length ratios were seen to become decreased in
upper and lower arches. They were higher in upper arches than in lower arches.
5. There were no notable arch index differences between males and females.
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