Vertical proportions of face: a cephalometric study

Area of Science:

• Orthodontics
• Anthropometry
• Facial Morphology

Background:

• Facial harmony is influenced by vertical facial proportions.
• Understanding sex-based differences in facial skeletal dimensions is crucial for orthodontic and surgical planning.

Purpose of the Study:

• To compare vertical facial heights between males and females.
• To investigate the constancy of specific facial height ratios in relation to facial harmony.

Main Methods:

• Cephalometric analysis was performed on 48 subjects (25 males, 23 females) with excellent occlusion and facial harmony.
• Vertical facial heights (anterior and posterior) were measured and analyzed separately for each sex.

Main Results:

• Significant differences were found in both anterior and posterior facial heights between males and females, with males showing higher values.
• The ratio of Upper Anterior Facial Height to Total Anterior Facial Height remained constant across sexes and ethnic groups.
• The ratio of Lower Posterior Facial Height to Total Posterior Facial Height was consistently 65% irrespective of sex.
• A significant difference was observed in the ratio of Total Anterior Facial Height to Total Posterior Facial Height between males and females.

Conclusions:

• Facial height ratios, particularly Upper Anterior Facial Height to Total Anterior Facial Height and Lower Posterior Facial Height to Total Posterior Facial Height, are reliable indicators of facial harmony.
• Males generally possess greater anterior and posterior facial heights compared to females.
• These consistent ratios offer valuable insights for assessing facial morphology and deviations, irrespective of sex.