Creating an aesthetically pleasing and highly functional zirconia crown takes careful preparation and know-how, and minor errors can result in an aesthetically displeasing or weak crown. To ensure consistently successful results, here are some tips and strategies for designing the perfect zirconia crown:
1. Check for structural integrity
Before doing any design work or creating the mock-up, check to make sure the surrounding teeth are structurally intact. If any decay or weak enamel is present, remediate those issues first and rebuild the structure where necessary.
2. Design a mock-up
Using an appropriate modelling wax, create a mock-up of the crown. This will form the basis of the zirconia crown, and you can use this model to determine the form and make any necessary adjustments before fabricating the crown from the zirconia material.
3. Choose materials carefully
Choose a dental zirconia material that is appropriate for the purpose. Pay attention to the fracture strength of the material, colour, and translucency as each factor must be taken into account during the fabrication process.
4. Fabrication and inspection
The fabrication process should be done using a combination of CAD/CAM technology and manual milling techniques. Once finished, inspect the fabricated crown to make sure it is not distorted, chipped, or stained.
The finishing process is critical in creating the perfect zirconia crown. Hand filing the final margins and surface texture ensures the crown is properly contoured and smooth. If necessary, adjustments can be made with polishing instruments.
Designing the perfect zirconia crown requires careful preparation with accurate measurements, selection of the appropriate material, precise fabrication techniques and a meticulous finishing touch. Following these tips and strategies will ensure a solid, aesthetically pleasing crown with exceptional results.