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KMID : 0378019630060060033
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New Medical Journal
1963 Volume.6 No. 6 p.33 ~ p.62
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A Morphological Study of Korean Denitition
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Abstract
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A total of 2,758 teeth extracted from individuals of Korean birth, were studied for the following measurements: 1) weight and volume of teeth, 2) specific gravity, 3) the volume of the pulp cavity, 4) the enumeration of the index of pulp cavity volume.
1. There was no significant difference in the weight of teeth with regard to an increase in age. How-ever, upper teeth weighed more than lower teeth in general, and those of the male were heavier than those of the female.
2. No significant difference was observed in the volume of the teeth regarding the age increase in both sexes. The upper teeth, however, were slightly larger in size than the lower teeth, and larger in the male.
3. A slight increase of specific gravity was observed with the age increase in the teeth of both sexes. In general, the lower teeth had a greater specific gravity than the upper teeth, and the teeth of female had a greater specific gravity than those of the male.
4. The secondary dentine formation around the pulp cavity increased with age and its formation took place more actively at the pulp horn, roof and floor of the pulp,cavity. In spite of the fact that there was no difference in the weight and volume of teeth with regard to age, slight increase in specific gravity was ovserved. Secondary dentine formation was assumed to account for this.
5. The volume of the pulp cavity decreased as the age increased in both sexes. In general, pulp cavity of the upper teeth was larger than that of the lower and slightly larger in the male than in the female.
6. The index of the pulp cavity volume decreased with an increase in age of the teeth of both sexes. However, there was no significant differences between the upper ´and the lower teeth, or between the male and female.
7. In comparison with Japanese and European teeth, Korean teeth are lighter in weight. The volume of Korean teeth are smaller than those of the Japanese, and the specific gravity of Korean teeth is greater than that of Japanese teeth.
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KEYWORD
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