SITE LINK

下顎骨의 皮質骨두께와 骨緻密度에 關한 放射線學的硏究
A ROENTGENOGRAPHIC STUDY OF CORTICAL THICKNESS AND BONE DENSITY OF MANDIBLE

치과방사선 1984년 14권 1호 p.51 ~ 59

소속 상세정보

신동진(申東眞)/Dong Jin Shin 이양내(李洋來)/Sang Rae Lee

KMID : 0378219840140010051

Abstract

著者는 骨組織疾患의 旣注歷이 없고 骨組織의 形態가 正常인 456名의 pantomogram에서
下顎隅角部의 皮質骨의 두께와, 309名의 口內漂準撮影寫眞에서 densitometer를 利用한
aluminum step wedge 두께에 對한 相對的인 骨緻密度의 變化를 年齡 및 性에 따라 分析,
觀察하여 다음과 같은 結論을 얻었다.
1. 下顎隅角部의 皮質骨의 두께는 年齡의 增加에 따라서 男子 40-49歲群과 女子 30-39歲
群까지는 增加하였으나 20-29 歲群以上에서는 그 增加幅은 크지 않았고, 그 以後의 年齡群
에서는 減少하였으며 그 減少는 女子에서 큰 傾向을 보였다.
2. 下顎隅角部의 皮質骨의 두께는 대체적으로 女子에서 보다 男子에서 큰 傾向을 보였으
나 40-49歲群以下에서는 男女差의 統計學的인 有意性이 없었다.
3. Densitometer를 利用한 aluminum step wedge의 두께에 對한 相對的인 骨緻密度의 年
齡에 따른 變化는 皮質骨두께의 變化와 그 傾向이 類似하나 骨緻密度와 年齡間의 相關關係
가 男子에서는 比較的 낮았고(r=0.22, p<0.005), 女子에서는 그 有意性이 없었으며 (r=0.06,
P>0.05), 男女差에 對한 有意性은 50-59歲群에서만 있었다.
#초록#
The aim of this study was to investigate the thickness of angular cortex and bone
density of mandible in normal person.
Age changes and sex differences of those were comprised in this study.
Material included 456 pantomographic views and 309 intraoral films taken by
paralleling technic
Conclusions from this study were as follows.
1. The thickness of mandibular angular cortex increased with age in both sexes before
15 to 19-year-old group. And those were relatively constant in the age range from 20
to 49 years in male and in the age range from 20 to 39 years in female, but decreased
after that age.
2. The thickness of mandibular angular cortex were larger in male than in female.
And no significant differences between sexes were noted before 40 to 49-year-old
group.
3. Changes of bone density with age were analogous to changes of thickness of
mandibular angular cortex.
Correlation coefficients between changes of bone density and age were arranged, and
male group underwent comparatively low correlation while insignificant statistically in
female group.
And no significant differences between sexes were found in all age groups except 50
to 59-year-old group.