Abstract: The layered composite product (10) can be applied to an impression tray (20) to take the impression of an edentulous arch. The product comprises a layer of photopolymerizable material (11), a layer of wax (12) and a separating film (13) interposed between the photopolymerizable layer and the wax layer.

Abstract: The positioning device has two rows of seats, namely an upper row (13) and a lower row (12), for temporarily retaining artificial teeth (14, 15) to be positioned and mounted on prosthetic supports. The teeth are retained in a relationship of maximum intercuspidation, in such a way that they can be positioned and mounted in this condition on the mandibular and maxillary prosthetic supports.

Abstract: The curved plate is used to position and model a malleable material capable of temporarily supporting the incisor and pinless teeth according to positions and orientations that will then be fixed permanently in the prosthesis. The plate has a general U shape, delimited by two parabola-shaped contours: an outer edge and an inner edge, respectively corresponding to the contour of the vestibular walls of the incisor and pinless teeth of the prosthesis to be built. The plate features a flat surface on its lower face, and an appendix defining a visible reference point that must correspond to the position of the interincisive papilla. The distance between the reference point and an average central point of the outer edge indicating a position situated between the more vestibular walls of the upper central incisor teeth, is between 8 and 10 mm.

Abstract: The craniostatic positioner comprises a pair of plates carried by a transverse yoke and having, one a collimator with a socket for the insertion of the X-ray tube therein, the other a cassette holder with an optical centering device, and a positioning assembly for positioning the patient's head including a headrest, a forehead slider, and an auricolar compass provided with at least one swivelling extension which cooperates with the compass in defining a reference plane containing anatomically definite and selectable points of the skull structure.

Abstract: Procedure and device, through which it is possible to realize a three-dimensional and transparent representation of the crest of each plater mold, and then to displace this representation, while keeping it parallel to its original position, in a direction at least approximately perpendicular to the occlusal plane, thus translating to an occlusal level under a three-dimensional form, the characteristics of the anatomic conformation of the underlying alveolar crests. Therefore, even after the application of a wax mask over the plaster mold, we still dispose of a representation of the crest, so displaced by perpendicular translation as to leave free the space needed for the fitting of the teeth, and this representation will allow in every moment to select the position of the different teeth and to control the position assigned, singularly and collectively, to the teeth themselves.