Comparison of Facial Profile Esthetics of Subjects with Bimaxillary Protrusion, as Preferred by the Subjects, Orthodontists and Laypersons
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Abstract
Introduction: The purposes of this study were to compare preferred facial profiles of subjects with bimaxillary protrusion produced by a 3-D facial light scanner between subjects, orthodontists and laypersons.
Methods: Facial images were recorded for 44 Thai subjects with bimaxillary protrusion. A computer program which combined cephalometric radiographs and 3-D photographic images was used to produce five modified profiles by retroclining and retruding the maxillary central incisors. The subjects ranked only their own facial profiles. Eighteen orthodontists and 30 laypersons ranked all profiles. The position of the upper and lower lips in relation to the E-line was measured on the most preferred images.
Results: The majority of observers in all of the groups chose the images at 50% of profile change, -2.11 to -1.99 mm for the upper lip to E-line, and -1.74 to -1.48 mm for the lower lip to E-line, as the most esthetic preferences. There were no significant differences in preferred facial profiles or lip position.
Conclusions: All three groups of observers preferred the same facial profiles, a slightly retruded upper and lower lip in relation to the E-line.
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References
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