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Several different 3D-printing technologies and materials are commercially available, and the differences in printing accuracy and mechanical behavior among them are unknown.
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K E Y W O R D S gender discrimination, intraoral scanner, palatal vault, palate, palate geometrics, probability valueĭigital dentures can be fabricated by subtractive milling or, more recently, by 3D-printing technology. Since geometric comparison requires far less computation time, geometric comparison alone can be used as an adjunct metric for limiting the possible matches in a dental 3D database in determining both sex and identity, especially if no other evidence is available. The difference in the 3D palatal model between twin siblings is primarily due to palate geometrics. By combining the height, depth, and width into a discriminative function, the sex correctly correlated 83.9% of the time, identity by 91.2% sensitivity, and twining by 68.5%. The study confirmed that the smoothing function had little effect on the discriminatory function since the Mean Absolute Distance (MAD) between M.Z.T.
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Digital smoothing was used to remove the rugae, and palatal height, depth, and width were measured. The palates of 64 monozygotic (M.Z.T.) and 39 dizygotic (D.Z.T.) twins were digitized three times using a scanner. Its aim is not only to determine if geometric comparison alone is sufficient not only to assist in identification but if it supports the hypothesis of assisting in sex discrimination when no other comparative data is available. This study aimed to evaluate the discriminative potential when only simple geometric analysis is used. Previous 3D superimposition studies of digital scans of the human palate, using geometric and surface morphology comparisons, have shown its usefulness in assisting in the identification process, including its ability to distinguish identical twins.