ArticleThe Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association2026
The Correlation Between Static and Dynamic Facial Asymmetry in Unilateral Cleft Lip and Palate.
Article in The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
ObjectiveAssess the relationship between static and dynamic facial asymmetry in unilateral cleft lip and palate during maximum smile.DesignRetrospective cross-sectional study.SettingMultidisciplinary dentofacial planning clinic.ParticipantsThirty-one surgically managed non-syndromic unilateral cleft lip and palate patients between the ages of 13 to 17 years.Materials and MethodsDynamic three-dimensional (3D) facial images (four-dimensional [4D]) throughout the course of a maximum smile were captured using video stereophotogrammetry at a rate of 60 frames per second, which generated 180 3D images/expression. A generic facial mesh containing more than 7000 vertices was superimposed onto the 3D facial images to quantify and track facial asymmetry throughout the captured sequence. Partial ordinary Procrustes analysis was utilized to calculate an asymmetry score at the rest position, maximum smile, and at the point of maximum mathematical asymmetry. The relationships between the asymmetry at rest and the asymmetry at the point of maximum smile (static 3D), and the maximum mathematical asymmetry (dynamic 4D) were evaluated.ResultsAsymmetry scores were higher at maximum smile than at rest. Maximum mathematical asymmetry was observed in most cases during the relaxation phase. Static asymmetry at rest and maximum smile was strongly correlated with the maximum mathematical asymmetry (
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