Chief complaint, in her words to the clinician: "I want fixed teeth that look like teeth. I don't want to think about them when I'm at work." By the time she arrived she had already researched a PFM bridge anterior restoration as an option and asked for it by name.
How she lost the teeth. #8 was knocked out at age 11 in a biking accident. #7 and #10 were lost in her early twenties — both were root-canal-treated after the same trauma, both cracked at the apical third over the next few years, both eventually extracted. #9 survived the original hit and is still her own tooth. The flipper was fitted after a bonded Maryland bridge debonded twice in the first year.
Clinical findings at this visit.
- #6 and #11 — intact natural teeth, pulp vital on cold testing, each carrying an old Class III composite that was starting to leak. Both canines inclined distally by roughly 7–10°, enough to pull the common path of insertion off a straight line.
- #9 — intact, pulp vital, around 2 mm of incisal wear from decades of parafunction against the denture base.
- Ridge in the #7–#10 zone — moderate horizontal resorption, roughly 3 mm narrower than the adjacent crestal width. Soft tissue healthy, no inflammation, keratinized band adequate.
- Opposing arch — natural dentition, Class I occlusion, 3 mm overbite, 2 mm overjet. No edge-to-edge contact.
- Smile line — low. At full smile only the cervical third of the central incisor region shows. Lip support looked thin on the labial, and she brought that up herself.
- Shade — natural teeth sit around A2 body with slightly warmer cervicals. Both canines (#6 and #11) show noticeable internal darkening from the aging composites; stump shade reads A3.5. #9 reads A2.
- Hygiene baseline — plaque index low, bleeding on probing under 10%, floss use daily. She was already comfortable using floss threaders from the denture era.
What the clinician asked for on this PFM bridge anterior
The clinician's write-up to the lab was two short paragraphs and a shade map. Reproducing it here, because it is a good example of how a case should be handed off to a dental laboratory.
- Design: 6-unit anterior PFM bridge, #6 to #11. Three abutments (#6, #9, #11), three pontics (#7, #8, #10).
- No facial metal collar. Porcelain shoulder on the labial, metal chamfer on the lingual.
- Modified ridge-lap pontics. Convex tissue side, light contact at the labial crest only, cleanable with a threader.
- Shade: body A2, incisal A1, cervical blended one half-step warmer; stump shade A3.5 on #6 and #11, A2 on #9. VITA Classical tab photo and a cross-polarized intraoral photo attached.
- Occlusion: respect the existing anterior guidance; keep the metal-porcelain junction out of any centric or protrusive contact. Don't change the overbite.
- Alloy: base-metal Co-Cr framework. Patient has no nickel-allergy history, but the clinic goes nickel-free on anterior work by default to keep that variable off the table.
- Milestones: metal try-in before porcelain, bisque try-in before glaze, finished in roughly two weeks.
The clinician added one extra line that shaped the whole PFM bridge anterior plan more than the rest of the brief: "The patient has a low smile line. Please don't over-reduce #9 for extra incisal translucency — I want to keep enamel."
That one sentence told us the final result had to come from frame geometry and shade work, not from aggressive preparation on the single remaining natural central incisor. The whole plan was built around that constraint.
Why a PFM bridge anterior design made sense here
Zirconia was looked at. Three facts moved the plan toward porcelain fused to metal in this specific case:
- Both canine abutments tipped distally. Metal frameworks can be milled thinner and still carry load, which gave us room to adjust the path of insertion without over-preparing #6 and #11. A monolithic translucent zirconia frame would have forced thicker connectors in a region where every tenth of a millimeter mattered.
- A3.5 stump shade on both canines. PFM blocks substrate color with a metal coping plus two thin opaque passes. High-translucent zirconia would have let the darker core read through.
- Repairability. Porcelain chips on a PFM bridge anterior restoration can be bonded chair-side or re-fired at the lab. On a six-unit upper that matters — a single chip should not cost the patient the whole restoration. This advantage holds over monolithic alternatives where a fracture often forces complete replacement.
For context on the material class, a systematic review of 1,796 metal-ceramic FDPs reported a 5-year survival rate of 94.4% (Sailer 2015, PMID 25935732), and a 15-year follow-up on 515 metal-ceramic FPDs placed between 1984 and 1997 recorded 85% survival at 15 years (De Backer 2006, PMID 12375457). These numbers describe metal-ceramic FDPs as a class, not six-unit anterior PFM specifically — we treat them as background, not a projection for this restoration.
Three technical hurdles behind this PFM bridge anterior design
1. Common path of insertion with two tipped canines. On the exocad model we rotated the insertion axis until #6 and #11 both had retentive walls above the undercut threshold, then checked what that cost us on #9. The compromise: #9 needed a bit more lingual reduction than it would have in isolation. We flagged that back to the clinician before she touched the real teeth — this was the "keep enamel on #9" conversation. She accepted the compromise and the design moved on.
2. Connector sizing in a narrow pontic zone. After ridge resorption, the embrasures between #7, #8 and #10 are naturally tight. The literature anchors a minimum connector cross-section of 6.25 mm² for metal-supported bridges, with a lingual-gingival rounded form (radius around 0.9 mm) to reduce stress concentration. On this bridge we targeted a connector area generous enough for a six-unit load, kept the gingival embrasure open enough to be cleaned with a threader, and routed the geometry so the metal-to-porcelain interface did not land on any contact point.
3. Porcelain thickness over the labial frame with an A3.5 stump underneath. To hit the shade target with A3.5 stump material underneath, we needed room for a thin opaque layer plus a proper dentin-and-incisal build. We zoned the frame — thinner on the labial where porcelain needed room (porcelain layer sitting in the 0.8–1.2 mm comfort range for anterior esthetics), thicker on the lingual where metal was carrying load. That split-thickness logic only works if the design is driven from the digital model, not estimated from a hand wax-up.
How we built this PFM bridge anterior, step by step
Scan review and CAD design — days 1–3
Trios scan, bite registration, and a diagnostic wax-up photo came in from the clinic. We checked the scan for margin clarity on all three abutments, confirmed the ridge contour under #7/#8/#10, and verified the opposing arch and the bite had been captured in the same session.
CAD was done in exocad. Coping thickness was zoned, connector geometry was drawn to the minimum cross-section target, pontic design was modified ridge-lap with a convex tissue surface, and occlusion was mapped so the metal-porcelain junction stayed clear of centric and protrusive contact. A printed resin model with removable dies came off the design file so the ceramic team had a tactile reference next to the digital one. For bridges longer than four units in the anterior region we use both — the digital model to drive measurements, the printed model to catch what the eye sees but the software does not.
Framework milling and metal try-in — days 4–7
The Co-Cr framework was milled from a certified disc, finished by hand under magnification, sandblasted with 50–100 µm Al₂O₃ in a one-way pass, steam-cleaned, and shipped for a metal try-in before any porcelain went on it.
The metal try-in is non-negotiable on any six-unit PFM bridge anterior restoration. If the frame doesn't seat passively on the real teeth, no amount of layering fixes it later. The clinician reported full seating, acceptable marginal fit under exploratory probing, and no rock on any abutment. She took three photos — one occlusal, one labial, one lingual — and signed off.
Degas, opaque and porcelain layering — days 8–11
Degas was run per the alloy's IFU, controlled hold time, even oxide layer. Feldspathic porcelain system matched by CTE to the Co-Cr alloy. Opaque went on in two thin passes — the first a wash to key into the oxide, the second a full-coverage layer to block the A3.5 stump from reading through on the two canines.
Dentin and incisal build followed the clinician's shade map. Cervicals warmed by a half-step. Incisal translucency used a small amount of blue-grey modifier in the center of #8 and #9 to echo the natural teeth in the lower arch. Pontic ridge-lap surfaces were kept smooth, convex, and glazed rather than polished mechanically — that keeps the tissue-side texture consistent with the natural teeth above.
Bisque try-in and final glaze — days 11–12
Back to the clinic in bisque. The clinician photographed the try-in in and out of the mouth, under daylight and under the operatory light, and sent back three small notes:
- A touch more incisal translucency on #8.
- Slightly reduced labial contour on #11.
- Open the gingival embrasure between #7 and #8 by about half a millimeter.
All three were chair-side-safe adjustments — we did the embrasure and contour work mechanically, re-stained the incisal on #8, re-glazed, cleaned, and shipped on day 12.
Shade protocol on a PFM bridge anterior case
The four records the clinic sent on this case:
Record | What arrived |
|---|---|
Shade code | A2 body, A1 incisal, cervical half-step warmer |
Stump shade | A3.5 on #6, A3.5 on #11, A2 on #9 |
Cross-polarized intraoral photo | Yes, with shade tab adjacent to the central incisors |
Written shade map | Yes, split into cervical / body / incisal zones |
Having all four lets the ceramist build the opaque, dentin and incisal layers against a real reference, not a guess. On a PFM bridge anterior case specifically, the stump shade and the cross-polarized photo are the two most undervalued pieces — a case without them is a case where the first bisque try-in is a coin flip.
Feedback from the clinician and the patient after cementation of this PFM bridge anterior
This is the part most case pages skip. It also happens to be where the real evidence sits, so we're reproducing it in order. The patient's words appear only where the clinician recorded them in her chart — we don't speak for the patient directly, we quote what the clinic sent back to us.
Day 1 — cementation visit
What the clinician recorded:
- Passive seating confirmed again before cementation. Floss passed through all five contact points without binding.
- Occlusion checked with 40 µm articulating paper — centric contacts on #6 and #11 only (as planned), anterior guidance landed on porcelain surfaces, no contact at any metal-porcelain junction.
- Cemented with a self-adhesive resin cement, shade A2. Excess cleared with floss and a scaler, no sub-gingival residue flagged under magnification.
- Chair time: 45 minutes including local anesthesia and photos.
What the patient said, from the clinician's chart note:
"Patient looked in the mirror, held it for about twenty seconds, said 'that's my face again.' Did not ask for any adjustment. She noted the labial contour felt 'fuller' than the flipper and asked if that would be visible in a work photo — demonstrated with a selfie on her phone, decided it looked natural, moved on."
What the clinician said to us by email that evening:
"Seated beautifully, no rock, no high spot. The incisal change you made on #8 is spot on — it reads at daylight and it reads under the operatory light, which is honestly the hard combination. One happy patient. Thanks."
Week 1 — soft-tissue check
What the clinician recorded:
- No cold or hot sensitivity reported.
- Mild gingival erythema at the labial of the #7 pontic site, consistent with a new restoration contacting the ridge. No pain, no bleeding on probing.
- Floss threader cleaning demonstrated chair-side; patient was able to clean under all three pontics on the second attempt.
- No chips, no fractures, no debond. No adjustments required.
What the patient reported, from the chart:
"Patient says the first two days felt 'strange on the tongue' at the lingual of the central pontics — adapted by day three. Reports no food trapping. Able to pronounce 's' and 'f' sounds without a lisp from the second day on. Not wearing lipstick to the appointment because 'I keep forgetting I have new teeth'."
Week 4 — recall
What the clinician recorded:
- Gingival tissue around all three pontic sites was pink, firm, no stippling loss, no probing depths over 2 mm.
- No plaque accumulation at the metal-porcelain junction on the lingual.
- No incisal wear facets on the bridge, no high-spot wear on the opposing lowers.
- Marginal integrity unchanged under exploratory probing on all three abutments.
What the patient reported, from the chart:
"Patient reports she stopped covering her mouth in meetings around day three. Says she forgets the bridge is there except when flossing. Took her sister to lunch over the weekend, sister did not notice anything had changed about her teeth. No requests, no complaints, happy to continue standard recall."
About the lab
Direct-manufacturing dental laboratory, not a trading company or middleman. The whole PFM workflow — case intake, CAD design, framework milling, porcelain layering, QC, packaging — runs under one roof across our Shenzhen and Huizhou facilities. Our ceramic and metal department carries roughly 70 technicians dedicated to crown-and-bridge work in metal-supported systems, and all cases pass through a QC department before shipment. We work with clinics, dentists and dental labs across the United States, the Netherlands, Germany, France, Belgium, Austria, the United Kingdom, Luxembourg and Switzerland, and we welcome factory visits and video audits.
Rework policy: if the piece doesn't seat passively at metal try-in or doesn't match the agreed shade map at bisque try-in, we re-make it. That's part of the standard delivery, not a separate line item.
FAQ
What stump shade information do you need for a PFM bridge anterior case?
Shade code (VITA Classical or 3D-Master) plus a cross-polarized photo of each prepared abutment, taken next to the shade tab. On a PFM bridge anterior restoration specifically, the stump shade determines the opaque layer. Without it we're building the opaque pass against a guess.
What's your standard turnaround for a PFM bridge anterior case like this one?
Twelve working days for a multi-unit PFM bridge anterior restoration, including a metal try-in and a bisque try-in. One revision cycle before metal try-in is included.
Can porcelain chips on a PFM bridge anterior case be repaired without replacing the whole bridge?
Yes. Small chips can be bonded chair-side with a composite system; larger ones can be returned to the lab for porcelain re-fire. That is one practical advantage a PFM bridge anterior restoration keeps over monolithic alternatives.
Do you share long-term outcome data on individual cases?
We share the design file, the metal try-in photos, the bisque try-in notes, the delivered bridge, and the clinician's recall notes when the clinic agrees to share them (as on this page). Long-term outcomes depend on cementation, hygiene and occlusal factors we are not involved with after shipping — we don't speak to those.
Want a quote on a PFM bridge anterior case? Send the scan or impression, bite record, intraoral photos, shade tab photo and stump shade. We'll come back inside one working day with a design-level review — including whether PFM is actually the right call for your case, or whether another material would serve you better.