Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 66. (Budapest 1974)

Bottyán, O.: The sexual dimorphism of the human mandible

y tions referring to the analysis of various characteristics is smaller owing to the imperfection of some of the mandibles. The material was grouped according to sex, therefore, the infantile I—II and the juvenile mandibles (59 specimens) were not evaluated in the present paper. The remaining 259 male and 214 female mandibles (a total of 473) served as basis to the present study. From the works of the above authors, only the sexual and age determinations have been made use of tin the present study. The rest of the data was compiled anew based on own measurements with the same instrument (vernier caliper and mandibulometer) applying identical methods in each case, using the measurement points of Martin. The depth of an incisure was taken by a palatometer. The morphoscopic observations followed the anatomic description of AUGIER (in: POIRIER & SHARPY 1931). I. Morphometric examinations The degree of sexual dimorphism revealed in the absolute measurements and indices (Table 1) was established by an approximating method elaborated in an earlier work (BOTTYÁN 1972). Besides the male and female mean values (Table 1. columns 3 and 5), colum 6 also gives the percentual deviations referring to the male measurements. (The negative values for males refer to lower means than those of females.). Table 1. Sexual dimorphism of the mandible 1. 2. 3. 4. Î 5. 6. 7. 8. Measurement : 6 $ 4. Î Î á_í 100 a Mean deviation Difference from the mean deviation. Measurement : N M N M á_í 100 a Mean deviation Difference from the mean deviation. 65. 173 121.29 170 114.91 5.26 5.86 -0.60 66. 232 102.41 204 94.05 8.16 0.00 + 2.16 67. 255 45.89 213 43.88 4.38 3.37 + 1.01 68. 254 72.27 214 68.96 4.58 5.19 -0.61 68/1. 246 97.91 207 93.89 4.11 4.74 -0.63 69. 245 30.62 208 27.18 11.23 9.69 + 1.54 69/1. 277 30.45 183 27.92 8.30 9.42 -1.12 69/3. 252 12.82 214 11.68 8.87 5.26 -3.61 70. 239 63.31 205 57.25 9.57 9.84 -0.27 70/3. 232 14.14 201 13.10 7.36 — — 71. 249 32.02 212 30.10 5.81 6.53 -0.72 71/1. 232 29.90 203 28.46 5.00 — — 79 + 162 121.51 141 123.51 -1.65 -3.30 - 1.65 71: 70 233 51.75 203 52.81 -2.05 -3.44 -1.39 66: 65 173 84.47 163 81.68 3.30 2.09 + 1.21 69/3: 69/1 252 42.10 214 41.83 0.64 -4.58 -5.22 70/3: 71/1 232 47.59 202 46.40 2.50 — In order to make the evaluation of the magnitude of numerical measurements easy, DEBETS (ALEXEYEV & DEBETS 1965) elaborated a method to classify various measurements, among them for those of the mandible, too. The classification was made for males and females separately, by doing this very useful data have been disclosed with regard to sexual dimorphism. Column 7 of the table includes the percentual deviation formed similarly as in column 6 on the basis of the mean