PROCEDURES AND MARKETING REQUIREMENTS FOR THE PROJECTION OF MEDICINAL PRODUCTS

摘要

A process and device allow transversal and longitudinal cracks to be marked on masticatory surfaces on crown moulds in dentistry by means of a simple mechanical device. The marking device (1) has at least a supporting arm (12) and at least a working arm (3) between which a defined angle is set. The advantage of the marking device (1) lies in the fact that it can be suported on an articulated part of an articulator, so that the centre of rotation of the marking device (1) lies at the position of the geometric central point of a condylar sphere on the axis of a hinge of the articulator. Longitudinal cracks can thus be marked on models by making an outer end of the working arm (2) describe an approximately circular orbit the center of which lies in the central point of the opposite condylar sphere of an articulation of the articulator. Transversal cracks can be marked by making the outer end of the working arm (2) describe an approximately circular arc the center of which lies in the central point of the condylar sphere on the same side of the articulation of the articulator. The invention has the particular advantage of allowing the Benett shift to be taken into account during marking by means of a coaxially rotatable guiding arm (23).