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What records, impressions, and shade information does a PFZ case require?

A PFZ is fabricated entirely from the records you submit, so complete, accurate records are the foundation of a well-fitting, well-matched esthetic restoration. ROE accepts both traditional and digital workflows.

Required records

ROE asks for traditional or digital impressions, an impression of the prepared teeth, an opposing model with bite registration, and a shade. Whether you submit PVS impressions or an intraoral scan, capture the full margin, the prepared tooth, the adjacent and opposing dentition, and a reliable bite.

Shade selection

Because PFZ is chosen for esthetics, shade communication matters. ROE matches all 16 VITA shades and 4 bleach shades and works in both the Vita Classical and Vita 3D-Master systems, with copings available in regular, translucent, and bleached shades. Capture color photographs with the shade tab held next to the prepared and neighboring teeth in good lighting, and include a stump (preparation) shade, since a discrepancy between the stump shade and the desired final shade can cause an inaccurate match. For demanding cases, ROE offers a shade-in-lab service.

Bite registration that you can verify

Use only a single rope of bite material on the occlusal surfaces and have the patient close into it; too much material prevents you from confirming the teeth are fully seated in occlusion. If a case lacks adequate centric stops, capture whatever stops are available with bite rims or a full-arch impression. If you are uncertain a bite will mount correctly, ask ROE to mount and verify it before fabrication proceeds.

Impression quality checklist

Before sending a traditional impression, confirm that margins are clearly captured, that there are no voids or bubbles, that there are no tears or pulls, that material thickness is adequate, that the opposing arch is captured, and that occlusal registration is correct. For digital scans, confirm the prep area is fully covered, including the margin line and contact points, and that the arches snap together correctly at the bite.

Clinical rule of thumb: A margin you cannot see in the impression is a margin the lab cannot reproduce. Retract, dry, and verify margin visibility before capturing the final record.

 

Additional Resources

For more information concerning the Porcelain Fused Zirconia (PFZ):

Contact Information

For help with a Locator Fixed solution for your next case, contact ROE Dental Laboratory: