Lab Tribune Middle East & Africa Edition No. 5, 2017

PUBLISHED IN DUBAI www.dental-tribune.me November-December 2017 | No. 6, Vol. 7 Processing of NPM sintering metal with inLab MC X5. User Case Base-metal bridges from small to large By Dentsply Sirona The CAD/CAM-based in-house pro- duction of crown and bridge frame- works made of non-precious metals (NPM) has opened up new possibili- ties in the dental laboratory for some time now, as it presents a faster, more economical, and more reliable alternative to conventional casting methods. The scope of this option is now further extended by the new inCoris CCB disc (Dentsply Sirona CAD/CAM) that allows the fabrica- tion of wide-span NPM restorations using the inLab MC X5 5-axis milling unit. These two concrete cases docu- ment the digital process. Case report 1: 4-unit bridge The patient presented at the den- tal practitioner’s offi ce has a failing bridge in her upper left quadrant (tooth 22 to 26). Due to agenesis of the canine, a four-unit bridge with one pontic at site 25 was required. As the patient wished to bring the cost down as low as possible, the dentist agreed to provide a veneered bridge with an NPM framework. ÿPage B2 Fig. 3, 4: A virtual version of the master model, including segmentation and pinning, was created for subsequent mounting on the perforated plate. Fig. 5: The model data were exported in STL format by way of the interface module of the inLab CAD software and used for in- house production of the physical model with a 3D printer. Fig. 6: The model axis, the jaw ridge line, and the insertion axis were defi ned in the inLab CAD 16.0 software (Fig. 6). Fig. 1, 2: The bridge restoration was fi rst defi ned in the software inLab CAD SW 16.0 (Fig. 1), choosing the new inCoris CCB disc for the framework (Fig. 2). The digital impres- sion of the intraoral situation was taken at the dental offi ce using the CEREC Bluecam intraoral camera and transferred to the dental laboratory’s inLab CAD SW 16.0 online via the Sirona Connect portal. LIFELIKE ESTHETICS – EFFICIENTLY PRESSED IPS e.max® PRESS MULTI THE WORLD’S FIRST POLYCHROMATIC PRESS INGOT • Monolithic LS2 restorations showing a lifelike shade progression • Exceptional combination of strength, esthetics and effi ciency • For crowns, veneers and hybrid abutment crowns • Coordinated with high-precision Programat press furnaces • Maximum cost effectiveness in the press technique c e r a m i c y o u n e e d l l a l a l Fig. 7-10: Thanks to its integrated biogeneric function, the CAD software supplied a design proposal. Only minor modifi cations were made: the contact points were individually adjusted and the thickness of the framework was reduced somewhat. www.ivoclarvivadent.com Ivoclar Vivadent AG Bendererstrasse 2 | 9494 Schaan | Liechtenstein Tel.: +423 235 35 35 | Fax: +423 235 33 60

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