A Quantitative Assessment of Lip Movements in Different Facial Expressions Through 3-Dimensional on 3-Dimensional Superimposition: A Cross-Sectional Study.
作者： Daniele Gibelli , Marina Codari , Valentina Pucciarelli , Claudia Dolci , Chiarella Sforza
DOI: 10.1016/J.JOMS.2017.11.017
关键词:
摘要: Purpose The quantitative assessment of facial modifications from mimicry is relevant interest for the rehabilitation patients who can no longer produce expressions. This study investigated a novel application 3-dimensional on superimposition mimicry. Materials and Methods cross-sectional was based 10 men 30 to 40 years old underwent stereophotogrammetry neutral, happy, sad, angry Registration expressions neutral expression performed. Root mean square (RMS) point-to-point distance in labial area calculated between each one considered main parameter assessing modifications. In addition, effect size (Cohen d) assess effects movements relation Results All participants were free possible deformities, pathologies, or trauma that could affect RMS values areas differed significantly among (P = .0004 by Friedman test). widest lips observed happy (RMS, 4.06 mm; standard deviation [SD], 1.14 mm), with statistically difference compared sad 1.42 mm; SD, 1.15 mm) 0.76 mm; 0.45 mm) versus total face limited large expression. Conclusion found provides wider than other suggests procedure regional changes
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