I also find the digital impressions are a lot safer and less expensive than conventional impressions, as sometimes conventional impressions require retakes. Additionally, conventional impression materials require a great deal of skill to get a high-quality impression. Digital scanners, on the other hand, produce highly accurate digital impressions quickly and easily. The digital impressions are stored in the software, enabling digital models to be easily sent to the lab.
For this case, I created a 3D model of the scan using the VOCO SolFlex printer. I find it to be incredibly accurate, and it provides me with a working model that is also digital. I used the original mock-up to fabricate the temporaries using VOCO Structure 3, which is a nanoparticulated bisacryl, and the teeth were designed so there was enough gingival clearance with no excess material.
The patient was sent home with the provisionals. The lingual surface of the teeth remains untouched, and only the labial surface of the teeth was impacted by the preparation for the veneers.
The digital impressions were sent to the lab, so they could complete the design and the manufacture of the veneers. The lab received the scan and started designing the veneers for each individual tooth in exocad software.
The veneer designs were sent to the Amann Girrbach Ceramill Motion 2 mill for milling. Ivoclar e.max blocks were milled and then placed in the sintering furnace for the first cycle.
Despite the fact that this was one of the first cases we ever scanned with the CS 3600, the fit was perfect. In fact, it could not have been better.
I also referenced the X-ray documentation to ensure that all was correct. I then added the ceramic layer to the e.max veneer for the ultimate aesthetic approach. Of course, if your preference is to use fully milled e.max, you can use that approach as it’s a much simpler process and the overall aesthetics are fantastic.
The entire case was digitally planned, printed and milled.
The final milled veneers, onlays and crowns were placed on the 3D printed model for final verification of aesthetic outcome and fit. The veneers covered only the buccal and incisal surfaces of the tooth. There was an onlay on tooth 16 for a minimally invasive approach, and I placed a full crown on tooth 17 because it required more comprehensive treatment.
Then, I placed the veneers one last time to check the final fit. Due to the conservative approach I took with this case, the final placement required minimal anesthetic. To create a completely isolated field, a rubber dam was placed and the teeth were acid etched. While the teeth were being prepared, the crowns and veneers were also etched and prepped for the cementation. We used VOCO Bifix, which is designed specifically for veneers.
Finally, the veneers were cemented into place. We refer to our cementation process as #lifechangingdentistry, because it truly does make such a significant impact on the lives of our patients.
Our patient got his complete smile transformation. His occlusion is absolutely perfect and, due to the minimally invasive approach, the outcome was completed in a way that was very simple and very easy for him.
The 100% digital workflow.
While this patient came to us for a new smile, and he certainly got that, everybody on my team also had plenty of reason to smile.