The anatomical localization of foramen infraorbitale (FOI) and its relationship with ambient structures are of great importance for clinicians and surgeons. This study was performed on seventy five skulls, and the distance between FOI to important anatomical formations, angular position of the zygomatic bone and the relationship between these parameters were investigated on both sides. The distance of FOI to margo infraorbitalis (MI), apertura piriformis (AP) and spina nasalis anterior (SNA), upper face height (UH) and upper face width (UW) were measured. Zygomatic bone triangle angles (SA, PA, IA) and porion-nasion-spina nasalis anterior angle (PNS) were measured from lateral view of the skull. While there was no significant difference between right and left measurement except for PA (p=0.03), the distance from FOI to MI is showed a very high degree positive correlation between the right and left sides, the distance from the FOI to AP was weak correlated only right side.

Objective: This study aimed to evaluate the validity of the mastoid triangle anthropometric measurements and area between the three craniometric points, namely porion (po), asterion (ast), and mastoidale (ms) as a sex determinant. Materials and Methods: A total of 60 dry skulls (30 males and 30 females) were assessed for 10 morphometric measurements with a compass, and a total of 120 mastoid triangles were evaluated. Results: Statistically significant differences were found in all the mastoid triangle measurements between males and females (p≤0.01). Discriminant function analyses revealed that the left po-ms length and the total area of the mastoid triangle were two variables with the highest sensitivity at an accuracy rate of 90%. The models with three mastoid triangle variables including the total po-ms, total ms-ast, and total po-ast measurements, in combination, provided high discriminant potentials of 96.7% and 93.3% in females and males, respectively. When the total po-ms, total ms-ast, and total po-ast were used together, a greater sexual dimorphism was observed, correctly classifying the sex with a 95% accuracy rate. The mean value of the total area which is preferred due to the asymmetry between the sides of the skull was 1455.2 mm² in males and 1341.2 mm² in females. Conclusion:In the light of the obtained results, the discriminant function analyses of the mastoid triangle measurements are concluded to be reliable in sex determination and preferable in forensic medicine and anthropology. Amaç: Bu çalışmanın amacı, porion (po), asterion (ast) ve mastoidale (ms) olmak üzere üç kraniyometrik nokta arasındaki mastoid üçgen antropometrik ölçümlerinin ve alanının cinsiyet belirleyicisi olarak geçerliliğini değerlendirmektir. Gereç ve Yöntemler: Toplam 60 kuru kafatası (30 erkek ve 30 kadın) kullanılarak kaliper ile on adet ölçüm gerçekleştirildi, 120 mastoid üçgen değerlendirildi. Bulgular: Erkekler ve kadınlar arasında tüm mastoid üçgen ölçümlerinde istatistiksel olarak anlamlı farklılık bulundu (p≤0,01). Diskriminant fonksiyon analizinde sol poms uzunluğu ve mastoid üçgenin toplam alanının %90 doğruluk oranıyla en yüksek duyarlılığa sahip iki değişken olduğu bulundu. Toplam po-ms, toplam ms-ast ve toplam po-ast ölçümlerini bir arada içeren üç mastoid üçgen değişkenli modeller,