Abstract
Background: Facial harmony and beauty make people attractive. One of the important parts that has a significant role in esthetics is the position of maxillary and mandibular bones. This study aimed to evaluate the effect of different positions of both jaws on esthetic preferences among health professionals and laypersons.
 Materials and Methods: Two colored photographs of e profile were selected among one-hundred patients by evaluating the soft tissue parameters. Photographs were changed with Onyx-ceph software. All soft tissue landmarks of lower 3rd part of the profiles were displaced in the horizontal plane by 2mm intervals relative to the true vertical plane. We selected different group of people as judges, who were lay persons (N=100), general dentists (N=100), plastic surgeons (N=25), orthodontists (N=25), and maxillofacial surgeons (N=24); and asked them to select their preferred profile and acceptable anterior and posterior limits. ANOVA and LSD post-hoc tests were carried out to determine the differences among the responses of groups.
 Results: No significant differences were found among the judges´ opinion regarding the most attractive profile. Ranges for male photographs were statistically different in evaluators groups. A wider range was accepted for the male subject by plastic surgeons and general dentists which was significant comparing to laypersons (P<0.05).
 Conclusion: All of the evaluators selected the straight profile as the most preferred one. However, the range of acceptability was the narrowest in the layperson group in comparison with plastic surgeons and general dentists. Gender of the judges did not have an impact on their selections.
Highlights
The impact of Facial attractiveness on desirable physical characteristics has been accepted for many centuries [1]
Selection of Photographs Colored photographs of profile and lateral cephalograms of men and women who attended for treatment in the orthodontic department at Shiraz University of Medical Sciences, School of Dentistry, were selected by two orthodontists among 100 photographs of all patients referred to the clinics for alignments of their teeth those who have any sagittal or vertical skeletal malocclusion excluded
In this study we found that the range of acceptability for bimaxillary protrusion and retrusion was wider for surgeons and general dentists than orthodontists and laypersons with the narrowest for lay persons surprisingly
Summary
The impact of Facial attractiveness on desirable physical characteristics has been accepted for many centuries [1]. Dongieux et al [9] stated that vertical and anteroposterior mandibular variations could influence the total soft tissue facial esthetics Their result showed that a class III (lower molar mesially positioned relative to upper molar) open bite was not acceptable and the most favorite one was a class l normal profile [6]. The purpose of this study was to determine whether there are differences in the perception of bimaxillary protrusion and the preferences among lay people, general dentists, orthodontists, orofacial surgeons and plastic surgeons in our society. We selected different group of people as judges, who were lay persons (N=100), general dentists (N=100), plastic surgeons (N=25), orthodontists (N=25), and maxillofacial surgeons (N=24); and asked them to select their preferred profile and acceptable anterior and posterior limits. Gender of the judges did not have an impact on their selections. [GMJ. 2014;3(2):81-89]
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