الفهرس 
Prevalence of facial asymmetry among preorthodontic adult patient : a cross-sectional retrospective study
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Abstract
Aim: The current research aimed to estimate the prevalence of facial asymmetry among the Egyptian
population, Determining the type of asymmetry (whether related to chin or nose or eye) and its relation
to gender (male or female).
Methodology: One hundred and fifty frontal photographic image were recruited from the orthodontic
department clinics of multiple universities (Cairo, Ain shams, Alexandriaو Al-Azhar and Mansora
Universities). For standardization, only photos of patients properly oriented in a natural head position
were admitted. To achieve this posture precisely, all subjects’ heads had to be centered and fixed on a
cephalostat. Fourteen points and ten lines connecting between the midsagittal line and the horizontal line
were drawn to assess asymmetry