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Tooth measurements performed on digital models using the “Compare” software. A, Segmentation of the digital models (TS and T1). B, Best-fit surface registration algorithm automatically superimposes individual teeth from the segmented models (TS or T1) on the corresponding teeth in the unsegmented T0 model. C, Local tooth reference frame that the software automatically generates, defining the principal local coordinate tooth axes being generated (Automated Tooth Coordinates).
