CAD/CAM - international magazine of digital dentistry

I 09 CE article _ daily digital dentistry I CAD/CAM 1_2013 to be fully crystalized in a two-stage ceramic oven (e.g.,ProgramatCS)priortofinaldelivery.Thispro- vides a major benefit to the entire procedure, with the advantages that the IPS e.max CAD milled restoration can be tried in the mouth and contacts verified before final firing and characterization. This makes the final delivery of the restoration more predictable and consistent. The introduction of DentaLogic software ver- sion 2.0 coincides with the availability of ad- ditional shades of IPS e.max for chairside use. IPS e.max Impulse introduces five new shades, three Value and two Opal shades. Because of the different brightness values of the three Value blocks, restorations can be optimally integrated into the surrounding tooth structure in terms of their shade. The two Opal blocks allow clinicians to imitate the lifelike opalescent effect, which is desired in anterior restorations. The Opal blocks are ideally suited for the fabrication of veneers and thin veneers. IPS e.max CAD blocks can also be seated with adhesive or conventional protocol depending on the retentive characteristics of the preparation following approved guidelines (Table 1). Acrylic Even though the price of gold has reached an all-time high6, if nostalgia and/or clinical concern of adequate clearance, margin design or material preference steer you toward metal-based restora- tions, you can still take advantage of digital scan- ning and designing benefits while providing you or your laboratory with a simplified fabrication process for metal-based (gold) restorations. TheBOB (BurnOutBlock)blockfromD4DTech- nologies can be selected for any preparation style and then scanned and milled for presentation to a laboratory for investment, burnout and casting (or pressing), thus providing you with consistency in design, contacts and contour for your skilled design applications (Figs. 7 & 8). _Conclusion Chairside CAD/CAM systems have provided cli- nicians with a new level of control in the practice of dentistry. From diagnosis through preparation and material selection, clinicians now have the capability of selecting from a variety of materials with proven clinical performance and to deliver restorations with unmatched efficiency and pro- ductivity.Thecategoriesofresin,resinceramicand glass ceramic give today's modern practices the ability to offer solutions for the majority of crown and bridge indications right in the office._ Editorial note: A complete list of references is available fromthepublisher. Figs. 7 & 8_The B.O.B. (Burn Out Block) provides the opportunity to design cast gold restorations virtually. Dr Curtis Jansen completed his DDS and his prosthodontic education at the University of Southern California (USC) School of Dentistry. He taught full time at USC and was director of implant dentistry in the Department of Restorative Dentistry.Currently,he has a full-time practice limited to prosthodontics and a dental laboratory in Monterey,California. Dr Curtis Jansen 34 Dormody Court Monterey,CA 93940 USA cejdds@mac.com www.cejdentistry.com. CAD/CAM_about the author Fig. 8Fig. 7