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ePaper created 2017-08-25, 17:58:13 | version 1.38.0
use of CBCT and CAD/CAM cone beam supplement | Fig. 21 Fig. 22 Fig. 24 Fig. 21: Openings for screws are located before placing the crowns. – Fig. 22: Comparison of the pattern, that is, the temporary prosthesis and the final prosthetic work. – Fig. 23: Final restoration prior to handover and the placing of crowns. – Fig. 24: Final restoration—frontal view. – Fig. 25: Magnification showing precision in the making of the crowns and Fig. 23 Fig. 25 in veneering by means of pink composite. from all angles. Figures 5 to 9 show some exemplary prints of the views visible from the occlusal surface. Having finished the designing process, the bar should be visually inspected from the intragingival side (Fig. 10). After this has been done, the next step consists in testing the almost ready-made crowns before the final glazing and before attaching it onto the model. As a result it is possible to make corrections, should they be necessary. Of course, one should check the proper match-up and the aesthetics on the model (Figs. 13 & 14). After the model was analysed, we proceeded to an- alyse the fitting and the aesthetics in the mouth of the patient. Carrying out such a test makes a lot of sense, especially in a dynamic way, and by asking the patient to make various facial movements, such as smiles and grimaces, we can assess the properties of the course of the border line of the zenith of the teeth and the transition into a gingival garland. It is of real impor- tance as at this stage that we can plan the process of covering the construction with pink porcelain or composite (Figs. 15–17). After the test, we sent the construction to a pros- thetic laboratory with detailed guidelines for veneering. To achieve the proper location of the pink veneering it was necessary to place the porcelain crowns onto the bar and model the border line for the gingival garland Fig. 26: Transparency of the final restoration. Fig. 26 CAD/CAM 3 2017 53