Sex determination of a person becomes the first priority of a forensic investigator in the process of investigation. Dental evidence plays a crucial role in providing informative data towards establishing the unknown’s identity. Studies in the field of Forensic Odontology have shown that canines and molars can withstand extreme temperatures and various insults. They present the highest sexual dimorphism amongst all teeth, making them ideal teeth in forensic investigative procedures. This study comprising 300 subjects (150 males and 150 females) was intended to measure the inter–canine arch width and inter–molar arch width in both maxillary and mandibular arches to determine the sexual dimorphism for these teeth and thus evaluating the efficacy of the molars over canines in sex determination.