Frontal sinus index size and mandibular ramus height on cephalometric radiography as a parameter for determining gender

The increase in fatalities in Indonesia can occur due to natural and human factors. The role of forensic odontology to help identify the gender of the victim. The mandibular ramus height and Frontal Sinus Index (FSI) parameters have good gender dimorphism. This study aims to determine the average height of the mandibular ramus and FSI of males and females in patients at RSGM UMY Hospital and to identify the differences in the mean between the two parameter groups. This cross-sectional study used secondary data from lateral cephalometric radiographs of patients at RSGM UMY. The sample included 77 radiographs of 21 males and 56 females aged 17-40. Data were then analyzed using SPSS version 26 with the Kolmogorov-Smirnov and Levene tests to determine the data’s normality and homogeneity. An unpaired t-test was then performed to determine the difference between groups and the average height of the mandibular ramus. The average mandibular ramus height for male and female groups was 69.0190 mm and 60.2554 mm, respectively. The average FSI for males and females were 2.6633 mm and 3.5071 mm, respectively. The unpaired parametric t-test results on the average of each gender group showed a significant difference (p