A bridge was then designed to restore teeth numbers 8-10. Because tooth number 8 had a dark underlying shade, it was determined that this part of the case should be restored using a zirconia framework with layered porcelain. Zirconia can mask out severely dark shades and was a great option to mask out this dark stump shade.
In addition to the ability to mask out the underlying color, the zirconia restorations are twice as strong as e.max restorations and are an excellent option for bridges. Then porcelain was layered over the framework to match the color and characterizations of the e.max restorations.
Ordinarily, it is best to try and restore cases using the same materials to get the best match. However, understanding the benefits of each material and using them to achieve optimal results is the best option. The key is to have ceramists, like those that are part of the Smiles by Design team at Burbank Dental Lab, that understand the art of layering porcelain to match differing materials flawlessly.
The final step in the fabrication process at the lab was to check the case for the following:
- Proximal Contacts
- Occlusal Contacts
- Functional guidance
Overall, the harmony found between the dental lab and the clinician plays a critical role in achieving successful outcomes (see the image shown below).