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ePaper created 2017-03-17, 11:21:45 | version 1.38.0
digital dentures industry report | Fig. 12: Try-in of the prototype to check the functional parameters. Fig. 13: Complete dentures created with CAD/CAM. Fig. 14: The patient is visibly happy with her digitally produced set of dentures. Fig. 12 Fig. 13 The dental technician defined the extension of the denture and selected an appropriate tooth mould from a software library of denture teeth (Fig. 11). The Digital Denture Professional add-on contains several examples of functional set-ups for select Ivoclar Vivadent and CANDULOR denture teeth, saving considerable time. The functional para- meters and mandibular dynamics can be verified in a virtual articulator similar to the Stratos 300 (Ivoclar Vivadent) and possible interferences can be identified. Third appointment A third appointment is purely optional. In this case, a prototype was tried in on the patient to check the aesthetics, phonetics and function of the prospec- tive final dentures (Fig. 12). Fine adjustments, such as corrections to the midline and reduction of the vertical dimension, were communicated to the lab- oratory. There, the denture design was approved for CNC production. A transfer template was computed automatically to facilitate the correct placement of the denture teeth. The CNC milling machine then finished the denture bases. The dentures were re- moved from the disc and polished (Fig. 13). Fourth appointment Intra-oral evaluation of the complete dentures and subsequent modifications were carried out in the same way as the procedures for conventional den- tures. Hardly any alterations were necessary in this case. The dentures provided a secure and reliable fit and harmoniously integrated into the patient’s overall facial appearance (Fig. 14). Conclusion Scanning technologies, combined with CAD/CAM processes, substantially reduce the workload asso- ciated with the fabrication of complete dentures. Virtual set-up and design facilities (CAD) and den- ture milling procedures (CAM) eliminate the lengthy processes involved in model articulation and flask- ing. As polymerisation shrinkage does not occur, the Fig. 14 dentures exhibit a high accuracy of fit. The system described in this report meets the demographic and economic requirements for the production of straightforward, fast, cost-effective and high- quality dentures for edentulous patients._ contact Dr Piero Venezia is a practicing dentist at Studio Cavalcanti and Venezia in Bari in Italy. He can be contacted at info@studiocavalcantivenezia.it. Pasquale Lacasella is a dental technician at Apulia Digital Lab in Bari. He can be contacted at lacasella@apuliadigitalab.it. CAD/CAM 1 2017 27