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ePaper created 2017-03-17, 11:21:45 | version 1.38.0
| industry report use of the magnification systems Fig. 38 Fig. 39 Fig. 40 Fig. 38: Final exam with prosthesis inserted; at this stage the prosthesis stability is tested. Figs. 39 & 40: Patient with the inserted prostheses. At this stage, the prosthesis could be finalised using the silicone to control the spaces and to relocate the teeth (Figs. 27 & 28). The importance of using the silicone keys throughout the design and final is visible in Figure 29, where the available space for the repositioning of the teeth is clearly visible. Without damaging the individual teeth, the set-up is repro- duced in a practical and quick way, keeping all the features of the initial project (Fig. 30). After repositioning and the new waxing was com- pleted, the model with the denture was inserted in the injection flask, and attached with a silicone base (Fig. 31). When the wax was removed and the model cleaned and isolated; the teeth were repositioned in the silicone key, the superstructure sandblasted, treated with primer, opaque and cured and put back on the model (Fig. 32). The flask was injected with resin and after its curing, the prosthesis is finished, rechecked in the articulator and polished (Figs. 33 & 34). Even the inner side was refined and polished, and only after this final steps, the retentive caps were inserted inside the prosthesis. These caps have the retention that the patient desires and the project necessitates (Fig. 35). After the structure was polished, it was delivered to the clinician; pol- ishing is a crucial part of the process to avoid plaque adherence (Fig. 36). During the final test after the bar is screwed in the mouth, it is good to double check the surrounding areas of the implants and the correct spaces for daily hygiene (Fig. 37). After its insertion, the prosthesis is re-checked and eventually discarded or remodeled; after a few days the patient was reviewed with great satisfaction of the work done and had a smile on his face (Figs. 38–40). Conclusion removable prosthesis, as they provide the possibility to check the good sitting of the superstructure on the bar and the proper function of the retentive sys- tems; this eliminates the negative internal tensions of the whole system that can be transmitted to the implants, thus extending the life of attachments and of the whole system._ about Dr Gualtiero Mandelli graduated in Medicine and Surgery from University of Study of Milan in 1985. After graduating, he achieved three post-graduate specialisms in: Orthodontics, Stomatology and Pediatrics in the same University. He was Visiting Professor in Orthodontics at University of Parma from 2003 to 2010 and from 2011 he has been Visiting Professor at Specialisation School in Orthodontics at University of Brescia. His private practice is in Lombardia. He has been a member of SIDO from 1995. Dr Mandelli is also an author of various scientific works and has given talks and presentations at numerous courses and congresses. Carlo Borromeo founded Dental Laboratory Borromeo in Italy in 1988, specialising in the construction of prosthesis for implants using CAD/CAM. He collaborates with Nobel Biocare Procera, Dental Wings, Rhein’83 and other companies to improve his expertise with As pointed out in this article, the importance of using magnification systems is evident, including their materials. He is a highly published industry author and presents and participates in many dental lab courses and conferences. 34 CAD/CAM 1 2017