SITE LINK

韓國人靑年의 下顎智齒에 關한 放射線學的硏究
RADIOLOGIC STUDY OF MANDIBULAR THIRD MOLAR OF KOREAN YOUTHS

치과방사선 1982년 12권 1호 p.57 ~ 62

소속 상세정보

안형규(安炯珪)/Hyung Kyu Ahn

KMID : 0378219820120010057

Abstract

著者는 5年에 걸친 서울大學校齒科大學 3學年生中에서 埋伏된 下顎智齒 514例를 對象으
로 하여 Winter의 分類法을 包含한 Pell과 Gregory의 分類法을 基準으로 하여 分類해 보았
고, 下顎第三臼齒가 近心傾斜時(水平位包含) 隣接한 第二大臼齒의 遠心面에 發生한 齒牙
蝕罹患率을 調査하였던 바 다음과 같은 결론을 얻었다.
1. 下顎骨上行枝와 第二大臼齒遠心部間의 關係를 基準으로 한 分類에서는 classⅠ이 272
例 (52.9%)로 首位를 차지하었다.
2. 智齒長軸과 第二大臼齒長軸間의 關係를 基準으로 한 分類에서는 近心傾斜位가 239例
(46.5%)로 首位였다.
3. 위의 두가지 分類를 함께 해본 결과 class I의 近心傾斜位가 140例(27.2%)로 首位였다.
4. 近心傾斜位와 水平位에 해당하는 智齒의 長軸이 咬合平面과 이루는 角島의 岺均값은
143°였다.
5. 病巢를 가지고 있는 下顎智齒는 73例로 14.2%를 차지하였다
6. 下顎第二大臼齒遠心商에 發生한 齒牙蝕罹患率은 3.1%
#초록#
The author has made a study on the classification of the mandibular 3rd molars of
Korean youths through dental radiography by means of Pell & Gregory's classification
and on the prevalence of the dental caries of distal surface of the mandibular 2nd molar
adjacent to the mandibular 3rd molars turned anteriorly.
The results are as follow ;
1. It was found that the largest case number was class 1 (272 cases, 52.9%) in the
relation of the tooth to the ramus of the mandible and 2nd molar.
2. The mesio-angular position was the largest number (139 cases, 46.5%) in the
relation of the long axis of the impacted mandibular 3rd molar to the long axis of the
2nd molar.
3. The mesio-angular position of class I was the largest number (140 cases, 27.2%) in
the re-lation of the tooth to the ramus of the mandible and 2nd molar arnd the long
axis of the impacted mandibular 3rd molar to the long axis of the 2nd molar.
4. The average angle of the long axis of mandibular 3rd molar in mesioangular
Position or horizontal position to the occlusal plane was 143°.
5. Mandibular 3rd molar with lesion such as dental caries or pericoronitis was 73
cases (14.2).
6. The caries incidence rate of the distal surface of the 2nd molar was about 3.1%.