Case produced at Khai Nguyen Dental Lab on the treating dentist’s prescription, published on Instagram @khainguyendentallab on 15 May 2025. No patient-identifying information is included.
Case details
| Indication | Ten maxillary veneers |
|---|---|
| Material | Amber Mill (milled lithium disilicate) |
| Shade | 1M1 to 1M2 |
| Technical point | The final restorations follow the wax-up approved by dentist and patient |
| Image source | Instagram @khainguyendentallab, 15 May 2025 |
Above: ten Amber Mill veneers on the holding stick before finishing.
Why the wax-up decides the outcome
In a multi-unit aesthetic case the central question is not “does the restoration look good” but “is it what the patient already agreed to”. A wax-up, whether in wax or digital, is a visual contract between three parties: dentist, patient and laboratory. Once the patient has seen and approved the form on an intraoral mock-up, the laboratory’s remaining job is to reproduce that design faithfully — not to improve on it unasked.
In this case the final restorations follow the original wax-up closely. That sounds simple but requires a disciplined workflow: the wax-up is scanned, used as the reference envelope when designing the veneers, and verified by superimposing the design file onto the wax-up file before milling.
Laboratory workflow
- Scan the approved wax-up and set it as the reference for the design.
- Design all ten units against that reference, keeping outline, proportion and incisal length consistent across the arch.
- Superimpose the design file onto the wax-up file to confirm that deviation from the wax-up stays within an acceptable threshold.
- Mill from lithium disilicate blanks, crystallise, stain to the 1M1–1M2 range and finish the surface.
Lessons for multi-unit aesthetic cases
- Always send the wax-up or mock-up scan if the patient has approved it. Without it the laboratory designs to general aesthetic norms, and the chance of missing the patient’s expectation is high.
- State explicitly if the wax-up needs adjusting: for example, “keep the form, reduce incisal length by 0.5 mm”. The laboratory will not modify an approved wax-up on its own initiative.
- Prepare through the mock-up, so veneer thickness stays even and does not have to be compensated by thickening the restoration.
See also minimum veneer thickness and our dental ceramic materials comparison.
The technique behind this case: Why a Restoration Must Follow the Approved Wax-Up.
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