判別函数による上顎犬歯の性別判定

概要

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The authors led the discriminant function to distinguish sex of the upper canine teeth. The materials were the upper canine teeth of 195 numbers (112 males and 83 females), belonging to department of Oral Anatomy, Kyushu Dental College. Measurements was made in four items (X_1 : crown width, X_2 : crown thickness, X_3 : crown length, X_4 : total length) in each tooth. The results were summarized as follows. 1. The upper canine teeth showed clearly sexual difference (at the level of 1 percent). 2. The sexual difference was greatest in total length and smallest in crown width. 3. The discriminant function was led, that is, Y=-0.00144X_1+0.00278X_2+0.00067X_3+0.00068X_4. The discriminant value (D.V.) was 0.03657. If Y value is larger than D.V., the tooth is regarded as male and smaller female. 4. The probability of misclassification was 38 percent. 5. The authors think it will be necessary to increase the numbers of teeth, the measurement items in the future. The authors think to be effective on forensic odontology and anthropology if this discriminant function is used in sexual diagnosis of the upper canine teeth.
1975-09-30