Case snapshot
Field | What we had |
|---|---|
Teeth | #8 and #9 (two upper central incisors) |
Age / medical | Adult female, no bruxism noted, no active periodontal issues |
Existing restorations | Older direct composite on one central (over a decade), small enamel craze line on the other |
Dentist's brief | Two lithium-disilicate veneers, target shade A1 with a slight brightening margin for later lower-arch whitening, keep the midline, preserve the natural incisal halo |
Submission | Intraoral scan (prep + opposing + bite), smile and retracted photos with the shade tab in frame, basal shade photo of each prepped central, DSD reference |
Turnaround asked for | Standard, with design preview before milling |
The brief is clean. The thing that makes two front teeth veneers hard isn't in the brief — it's in the basal shade and the neighbor comparison, both of which only show up after the prep.
What the dentist asked us to solve
Three asks, written in the words a bench technician cares about:
- A1 is the target, but go a shade brighter so the lower arch can be bleached later without the uppers looking off. This is a margin, not a number. It changes layering, not just the ingot pick.
- Keep the midline where it is. Two front teeth means the eye lands on the midline first. Any formal change ripples outward.
- Preserve a soft incisal halo. Not full translucency — a quiet rim that reads as natural enamel.
Nothing here is unusual on paper. It gets interesting once the preps come back.
The constraints we actually faced in the lab
- Basal shade was darker than target. The older composite side showed through more than the enamel side. The opacity layer and the body layer have to be designed against that, not against the ingot's own shade.
- Minimum thickness is non-negotiable. We needed enough body thickness to carry the brightening margin without going chalky, and enough incisal space to carry a halo without going opaque. Published clinic sources commonly quote about 0.3–0.5 mm or about 0.5 mm of facial reduction for a porcelain veneer — that's a vendor-side range, not an authoritative one, so we read it as a planning window rather than a rule. The rule that is authoritative is to keep the prep in enamel wherever you can. A 2025 meta-analysis of ceramic veneers bonded to different substrates found enamel-bonded veneers at almost perfect survival and success, 99% each with a range of 98% to 100%; veneers with severe dentin exposure fell to 91% survival and 74% success (systematic review of veneers bonded to enamel versus dentin, PubMed 38604905). That gap is the whole reason we ask for a stump shade photo before designing: it tells us how much of this case has already left enamel.
- Two units, one eye. The two shells have to look like a pair. That means the same ingot batch, the same firing cycle, same layering recipe, and documented QC on the pair as a pair.
How we built it
1. Shade reading — before anything else
We don't trust phone photos for a 2 front teeth veneers case. The flash and auto-white-balance on a phone shift the cervical cue enough to lose the match. For a 2 front teeth veneers submission we ask for:
- Natural tooth + shade tab in the same frame, in daylight, teeth clean and moist.
- A separate basal shade photo of each prepped central with the tab in frame, so our technician can judge how much masking is needed.
That second photo matters more than the first. For a thin veneer, the stump shade drives the opacity layer, and the opacity layer drives everything that happens on top of it.
2. Material pick — why lithium disilicate on this one
For two front teeth veneers in a case with a visible craze line on one side and composite showing through on the other, we picked lithium disilicate (E.max). It's bondable, it carries layered esthetics well, and it has long-run clinical data behind it. The porcelain-veneer survival numbers for 2 front teeth veneers that matter for this conversation:
- Around 95.5% at 10 years across 25 studies and 6,500 porcelain laminate veneers (systematic review of long-term survival, PMC7961608). That figure counts fracture, debonding, secondary caries and need for endodontic treatment as failures.
- About 53% still free of any re-intervention at 10 years among veneers placed in England and Wales general dental services (ten-year outcome study, PubMed 18538912). Same procedure, different question — survival counts a repaired veneer as surviving. We tell our dentist clients to carry both numbers into the patient conversation, because "how long does this last" and "how long before anyone touches it again" are not the same question.
- By ceramic type, 10-year survival runs 96.81% for lithium disilicate, 96.13% for feldspathic and 93.70% for leucite-reinforced, with no statistically significant long-term difference between them (meta-analysis by ceramic type, PMC12076113). Zirconia had short-term data only. This is the main reason we reached for lithium disilicate here rather than assuming "porcelain" is one material: it gives us the layered look the brief asked for while sitting at the top of the measured range.
Zirconia veneers exist and we make them — they're a stronger pick when occlusal load is heavy. On this 2 front teeth veneers case the dentist and the patient both wanted the layered look over raw strength, so lithium disilicate was the right pick.
3. Mock-up and design preview, before any ceramic was fired
We asked the dentist to run a wax-up / mock-up in the mouth and send back a confirmation photo before milling. Our scheduling adds 1–2 extra lab days when a case is held for design preview, and the dentist here agreed to that trade. It's cheaper to argue over form on a mock-up than on a bonded restoration. Form on two front teeth veneers is locked the moment the cement sets.
4. The layering plan, written down
For the pair, a 10-year-plus ceramist on our anterior esthetics group kept a layered log:
- Masking layer against the measured basal shade on each central (the two were not identical).
- Body layer biased slightly brighter than A1, aimed at the brightening-margin the dentist asked for.
- Incisal rim with a quiet halo — not a strong translucency, more a hint, so it reads as enamel rather than as "a veneer".
- Cervical blend matched to the neighbors (#7 and #10), not to the shade tab, because the eye compares the central-to-lateral transition before it compares the central to the tab.
Every powder, batch, firing curve and layer thickness went into the case record. If anything comes back for an adjustment, we can retrace it layer by layer.
5. The try-in — and the one adjustment we actually made
The dentist tried the pair in and sent us a photo back. Cervical third read a touch cooler than #7 and #10. The incisal and body were on target. Rather than guess from the chair, we pulled the shells back, re-balanced the cervical warmth in the body layer, re-fired, and re-shipped. Same ingot batch, same ceramist, same firing curve on the rest of the pair.
This is the quiet reason to document every layer: a cervical adjustment on 2 front teeth veneers isn't a redo — it's a targeted correction. Without the log it would've been a redo.
6. QC and shipment
Standard three-pass QC on this case: incoming data check, in-process check between milling and layering, independent final inspection before packing. Anterior esthetic cases get an extra specialist review on top of the three passes.
- Lab turnaround for a conventional fixed case at Istar: 2–3 production days.
- With a held design preview on this 2 front teeth veneers case: production ran about 1–2 days longer.
- Final inspection by an independent QC technician before the pair left the bench.
Shipping is separate and depends on where you're based.
Finished-piece targets
Not "the result" in a before-and-after sense — the targets we hit by the time the pair cleared QC:
- Shade on target plus the brightening margin the dentist asked for, verified against the submitted photos and the mock-up approval.
- Midline preserved to the submitted bite record.
- Incisal halo present but quiet — reads as enamel.
- Cervical third warmed to match #7 and #10, not the shade tab.
- Layer log, firing curves, ingot batch, cervical adjustment: all archived to the case file.
Whether the pair looks right in the mouth on day one and three years out is a clinical outcome, not a lab outcome. The lab outcome is whether the pair matched the brief, the submission data and the mock-up — on this one, it did, with one documented cervical adjustment on the way.
Submitting a two front teeth veneers case to us
If you want to send a pair of centrals to our bench, send these — in this order:
- Intraoral scan (prep + opposing + bite).
- Smile and retracted photos with the shade tab in frame, natural daylight.
- Basal shade photo of each prepped central with the shade tab in frame (this is the one that saves the case).
- Any DSD or wax-up you've already run.
- The brief — target shade, any brightening margin, incisal character you want.
We handle every step in-house in our Shenzhen and Huizhou facilities, from CAD design through porcelain layering, glazing and final QC. Lab turnaround for a conventional 2 front teeth veneers case is 2–3 production days, plus 1–2 days if you want the design preview locked before milling.