Proportional and Angular Photogrammetric Analysis of the Soft Tissue Facial Frontal View of Young Adults in Shiraz, Iran

Introduction: Facial beauty is becoming more and more important worldwide. This is defined as being close to what is advertised as attractiveness by the media and is determined mainly by golden proportions. This study aimed to observe the soft tissue facial angular and proportional norms of South Iranian population attending Shiraz Dental Schoolʹs clinic. Materials and methods: Seventy subjects (34 males and 36 females; 16 - 30 years of age) with Persian origin who had a skeletal class I pattern and almost well-aligned maxillary and mandibular dental arches who participated in this cross-sectional study were selected from patients attending Shiraz Dental Schoolʹs orthodontic clinic in 2013. Standardized frontal facial view digital photographs were taken from subjects and were traced. Four angular and eight proportional facial variables were analyzed using AutoCAD software. For statistical evaluation, a Studentʹs t-test was used and the reliability of the method was assessed using Inter-class Correlation Coefficient within a four-week interval. Results: Men had a higher facial asymmetry, a higher facial Index, a higher proportion of the distance between inner canthus of the eyes divided by the mean of the width of the right and left eyes, and a lower facial aperture modified angle average compared to females. Conclusion: The average measurements of most facial variables of this studyʹs population deviated from the ideal values suggested in texts and from those of the comparison population.