This study is conducted with a view to make correct sexual differentiation by the utilization of discriminant functions. For that purpose were randomly sampled out 148 young adult testees, comprising 6 7 males and 81 females, ranging from 15 through 18 years of age. Based on the values made available from the measurement of 6 items corresponding to the maxillary cast models, a statistical analysis was made to abstract feasible discriminant functions.
The resultant findings are as follows:
1. The mean value by sex indicates, in all items, higher one in male group than in female group. 2. Through the measurement were defined -as singificant items in sexual differentiation the
bucco-lingual dimensions of canine, 1st-molar, 2nd molar, and 1st bimolar width.
3. Derived from the values from measurement items were discriminant functions with the intention of applying them to sexual differentiation, as follows: 1) Y = -25.4112 + 0.7513BL3 + 0.3298BL4 - 0.2854BL5 + 0.7350BL6 - 0.3482BL7 +
0.2893AW (as tested by Method I)
2) Y = -25.0628 + 0.7737BL3 + 0.7468BL6 - 0.3885BL7 + 0.2951AW (as tested by Method II)
BL3 : Bucco-lingual dimension of upper canine
BL4 : Bucco-lingual dimension of upper first premolar BL5 : Bucco-lingual dimension of upper second premolar BL6 : Bucco-lingual dimension of upper first molar
BL7 : Bucco-lingual dimension of upper second molar AW : Upper first bimolar width
Sexual differentiation in terms of discriminant functions represented. a probability of 76.4%.
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