Iraqi cephalometric norms using McNamara’s analysis

الملخص EN

Background : This study aimed to establish the cephalometric norms for Iraqis using McNamara's analysis and to verify the existence of sexual dimorphism.

Materials and Methods : 75 dental students, (33 males and 42 females) having normal occlusion, were chosen for this study.

Each student was subjected to clinical examination and digital true lateral cephalometric X-ray.

The radiographs were analyzed using AutoCAD program 2006 to measure the distances and angles.

Descriptive statistics was obtained for the measured variables for both genders and independent- samples t-test was performed to evaluate the genders difference.

Results and Conclusions : The maxilla is protrusive in males in comparison with females, the effective midface and mandibular lengths, lower facial height are significantly higher in males, and the Frankfort mandibular plane angle is significantly higher in females.

The females show retrusive mandibles with slight retrusive upper incisors in comparison with males, while both genders show the same lower incisor position.