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All other geometrical descriptors can be obtained, as previously shown in Methods section, starting from first and second derivatives, and are easily computed for each point of the facial surface.
Porcelain veneers, alternatively termed dental veneers or dental porcelain laminates, are wafer-thin shells of porcelain that are bonded onto the facial surface of teeth so as to create a cosmetic improvement for a tooth.
In addition, an impression of the facial surfaces of the unprepared anterior teeth can be made to show how the anterior teeth look, by having the patient occlude the teeth, and placing fast-setting bite registration material on the facial surfaces of both the mandibular and maxillary anterior teeth (Fig.
Another 3D facial surface imaging modality commonly used in facial anthropometry is laser scanning, which typically sweeps a narrow laser beam across the subject's face.
Likewise, the 3-D facial surface images in the database offer the potential for the quantitative investigation of the evidential value of superimposition and consideration of the influence of pose angle in superimposition comparisons.
These facial surface images are done by laser or optical scanners and by three-dimensional digitizing method.
Three-Dimensional Face Recognition from Video: Facial Surface Reconstruction and Analysis Using Tensor Algebra and Differential Geometry Justin Moore Solomon, Thomas Jefferson High School for Science and Technology, Alexandria, Virginia)
Especially for a convex facial surface (which heals less well cosmetically than concave facial surfaces), this technique was believed to offer the potential for a better long-term cosmetic result.