A method for capturing the shape of a dento-maxillofacial object out of volumetric image data of the dento-maxillofacial object is described. The method includes performing a segmentation of the volumetric image data with at least one calculated segmentation parameter indicative of the distinction between the dento-maxillofacial object and its background and derived from a calibration procedure. The method further includes capturing the shape of the dento-maxillofacial object from the segmented volumetric image data.