Troubleshooting: what should I do if an EZneer case does not go as planned?
Most EZneer complications trace back to one of four causes: a glass-ceramic bonding protocol applied to zirconia, insufficient or uneven preparation, inadequate shade documentation, or contamination during seating.
Common issues and corrective actions
| Issue | Likely cause | What to do |
|---|---|---|
| Veneer debonded | Hydrofluoric or phosphoric acid was used, the MDP primer was skipped, the surface was contaminated, or isolation was inadequate | Re-treat the inner surface, confirm your primer contains MDP, rebond with a light cure resin adhesive. Re-cementation may be coded D2910 |
| Restoration darkened after cementation | A self-cure or dual-cure adhesive was used instead of the specified light cure resin | Follow the light cure resin-based adhesive instruction, which is specified to prevent darkening |
| Substrate color still visible | Preshaded veneer at minimum thickness over a dark or uneven prep | Move to the multilayered option in the 0.5 to 0.8 mm range and discuss the substrate with ROE before finalizing the prep |
| Shade does not match adjacent teeth | Shade recorded in poor lighting, no shade tab photo, or dehydrated teeth at the time of recording | Re-record shade with VITA 3D-Master and a shade tab photograph, or use the Shade-In-Lab Service |
| Incisal chipping or fracture | Incisal reduction outside the 0.75 to 1.5 mm range, or a thin unsupported edge instead of a butt joint | Confirm a 90-degree butt joint, verify occlusion and excursive contacts. Repair may be coded D2983 |
| Veneer will not seat fully | Residual cement or temporary material on the prep, tight interproximal, or a margin that is not fully captured | Clean the prep thoroughly, confirm the prep extends halfway through the contacts, and verify the 0.2 mm chamfer was captured in the impression |
| Open or tight contacts | Interproximal extension did not reach the specified depth, or impression distortion | Re-verify the prep against ROE's specifications and resend records if the margin or contact area is unreadable |
| Fit issues across multiple units | Impression distortion, scan stitching error, or a bite registration that does not reproduce | Rescan or re-impress. Verify the opposing arch and bite registration were both submitted |
When to escalate
- Before you re-prep or remake, contact Chairside Support. Many issues can be resolved without a second appointment.
- For warranty questions, EZneer carries a 2 year warranty. See the Warranty Statement.
- For remakes, returns, or credits, review the Returns and Refunds policy.
- General questions: info@roedentallab.com or (216) 663-2233.
Preventing problems on the next case
- Document shade before the teeth dehydrate, and always include a shade tab photograph.
- Flag masking cases in the Rx so the technician selects the right shading approach up front.
- Verify your primer contains MDP and that your adhesive is light cure, before the seating appointment.
- Record your standing preferences on the Doctor Lab Preferences form.
- Use the Case Delivery Calculator so the seating appointment is never scheduled ahead of delivery.