CUTTING EDGE CAD/CAM SOLUTION INCREASES RESTORATIVE ACCURACY AND MINIMIZES CHAIRTIME
After 10 years of investigating and demoing several versions of CEREC, I was asked by Benco in 2013 to be a beta tester of its OneVisit CAD/CAM system. I jumped at the opportunity to assess its viability in clinical settings and test the limits of what it could do. I was very impressed and when it was available, I purchased and am now an official user of the OneVisit system? 3M ESPE?s True Definition scanner along with Glidewell?s IOS FastDesign software and TS 150 milling machine.
I have found the True Definition scanner to be highly accurate and precise. As with all new technologies, there is a learning curve, but once you crest that curve, the technique becomes second nature. The biggest differentiator of this scanner is repeatable accuracy.
The IOS FastDesign software is a version of the same software Glidewell uses at its lab facility. It is very user friendly, guiding us quickly through the design process from margin marking and design proposal, to final production. With the software?s extensive library of dental anatomy possibilities, anyone on my team is able to quickly and easily design a wide range of restorations.
The TS 150 milling machine consistently gives us precisely fitting restorations with excellent marginal integrity. From scan start to completion of the restoration, the process can be completed in about 20 minutes.
On the occasion that I don?t mill restorations in the office, the True Definition scanner?s open architecture has changed the way I think about the process. I can use the scanner for all fixed and removable cases. It takes only 3 days to scan an arch and have the models printed and mailed back to us from 3M ESPE. With the advances in 3D printing and model making, it is becoming a viable option to be completely impression-free in a practice.
Meeting Present Challenges?
I had a couple of patients present with endodontically treated teeth had broken off at the gingiva, and with zero clinical crown height. I offered them the option to ?experiment? with a milled restoration that I would fit it into the existing root canal prep and bond into that area. So far, these restorations have been sucessful, and this has led me to change the way I prep all restorations by becoming much more conservative in my enamel removal. Without the scanner and mill, the only option for those teeth would have been extraction.
With traditional techniques, most dentists do crown preps the same way?anesthetic, prep, impress, temporize in the 1-hour first visit, and then reappoint for a 30-minute seating appointment. With One- Visit, we now appoint for 1 hour and take care of everything in the first visit. Eliminating the follow up appointment frees up our schedule significantly.
?And Future Challenges
Overall, milled restorations are far superior in accuracy to a hand waxed restoration. Labs have already figured this out and are increasing switching to CAD/CAM processes, either printing waxups or milling restorations. Benco?s OneVisit CAD/CAM system is an ideal combination of components that was easy and economical to integrate into my practice.