Sex Determination Using Mandibular Canine among Northeastern Nigerian Population

Establishing a person’s identity is important for both legal and humanitarian purposes.Sex determination is a key characteristic used in the identification of a deceased individual.The aim of this study was to determine sex by using mandibular canines among individuals in the Northeastern Nigerian population.Two hundred and eight individuals(102 men and 106 women)participated in this study.The mesiodistal widths of the mandibular canines and intercanine distances were measured using a vernier caliper and a divider.Step‑wise logistic regression analyses were used to determine sex based on mandibular parameters.Male participants had significantly higher mandibular mesiodistal width than female participants.Similarly,the canine index was significantly higher in male participants than in female participants.The mesiodistal width of the left mandibular canine exhibited the highest sexual dimorphism(9.78%)and was the best characteristic for use in determining sex,with an accuracy of 75%.Among the Northwestern Nigerian population,sex can be most accurately determined using the mesiodistal width of the left mandibular canine.

Sex Determination Using Cheiloscopy and Mandibular Canine Index as a Tool in Forensic Dentistry

Identification of a person's individuality and sex determination are important for legal as well as identification purposes.The aim of the present study was to check the reliability of cheiloscopy and mandibular canine index(MCI)in the detennination of sex in an individual.The aim of this study is to analyze difierent lip patterns reproduced by the natural dye(vermilion)and lysochrome(Sudan Black Ⅱ)dyes and to compare the MCI in males and females for the determination of sex and to check the reliability of cheiloscopy and MCI for the same.Latent lip prints were developed using natural dye(vermilion)and lysochrome(Sudan Black Ⅱ)dyes and their patterns categorized according to Tsuchihashi's classification.MCI were calculated.Analysis of the two was performed.According to discriminant functional analysis,percentage accuracy for cheiloscopy in the determination of sex was found to be 55%while for MCI,the same value was 85%.Natural dye(vermilion)was found as an efficient dye compared to lysochrome(Sudan Black Ⅱ)dyes for the development of latent lip prints.Both the dyes showed Type Ⅰ lip print pattern to be common in males and females.Furthermore,all the parameters in MCI were found to be significant in the determination of sex in an individual.The results of the present study revealed MCI to be more reliable in the determination of sex than cheiloscopy.