Journal of Korean Academy of Oral and Maxillofacial Radiology (치과방사선)
- Volume 7 Issue 1
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- Pages.5-8
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- 1977
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- 1225-049X(pISSN)
THE STUDY OF IMPACTED AND SUPERNUMERARY TEETH IN YOUNG MAN BY THE FULL MOUTH ROENTGENOGRAMS
청년 전악X선사진에 있어서 매복치 및 과잉치에 관한 연구
- Ahn Hyung Kyu (Dept. of Dental Radiology, College of Dentistry, Seoul National University)
- 안형규 (서울대학교 치과대학 치과방사선학교실)
- Published : 1977.12.01
Abstract
The author has observed 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 positions in the dental arch. The result were as follows; 1. The incidences of impacted teeth were 59.05% and the ratio of upper jaw to lower one 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.
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