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靑年全顎X線寫眞에 있어서 埋伏齒 및 過剩齒에 關한 硏究
THE STUDY OF IMPACTED AND SUPERNUMERARY TEETH IN YOUNG MAN BY THE FULL MOUTH ROENTGENOGRAMS

치과방사선 1977년 7권 1호 p.5 ~ 8

안형규,

소속 상세정보

안형규 ( ) - 서울대학교 치과대학 방사선학교실

KMID : 0378219770070010005

Abstract

The author has abserved 906 full mouth roentgenograms in Korean young man who had the impacted and supernumerary teeth.
Impacted and supernumerary teeth were analysed upon several items, such as incidences and psitions in the dental arch.
The results were as follows;
1. The incidences of impacted teetch were 59.05% and the ration of upper jaw to lower on was 1:3.
2 The frequency of the supernumerary teeth were 5.52% and the ratio of maxilla to mandible was 49.:1.
3. No significant differences between right and left side in both jaws, but incidence rate of the supernumerary teeth was 74% in the maxillary central incisor area.
4. The positions of impacted and supernumerary teeth were vertical and inverted shapes in maxilla, whereas horizontal and mesio-angular forms in mandible.