Orthodontic management ran through the teen years. The space was opened and held with a bonded pontic on a retainer. Placement of the fixture was deferred until skeletal maturity, standard practice to avoid later infra-occlusion as growth continues after apparent completion.
By the time the fixture went in, the ridge had been edentulous in that position for over a decade. The buccal plate had thinned from the lack of a tooth to load it — a predictable outcome in congenitally missing sites — and the surgeon staged a buccal graft before placement, then added a small contour graft at fixture insertion to recover the facial profile. A narrow-platform fixture was selected rather than a standard diameter, consistent with the ~1.5 mm minimum clearance from each adjacent root reported in the clinical literature for anterior implants and with narrow-diameter implants in lateral incisor sites.
The clinical photo set that came with the scan:
- Smile line. Mid-to-high on full smile — the gingival margins show, so any error at the collar would be visible.
- Contralateral #10. Normal lateral, not a peg. Length and width within the standard envelope. A usable reference for shape, incisal halo, and surface texture.
- Adjacent central (#8) and canine (#6). The central reads bright and translucent with a defined mamelon pattern; the canine is warmer and more saturated with flatter translucency. The new crown has to bridge them, not copy either one.
- Soft tissue. Keratinized band adequate on the facial. Gingival phenotype reads on the thin side — scalloped margins, slight translucency near the collar. Papillae on either side of the planned site are intact.
- Occlusion. Class I incisor relationship, light anterior guidance in protrusive. The lateral site has limited vertical overlap, so the palatal of the final crown will not take heavy occlusal load.
What the dentist asked for
The prescription came in through our case portal, with photos, scan files, and a written note. Everything on the list below sits inside what a lab decides, not what the surgeon decided. The surgical part was already done.
On the interface
- Confirm the implant platform from the packaging label photo before anything is designed. If the scan body library and the label disagree, stop and come back for clarification. No guessing.
- Build a custom abutment, not a stock one. The margin needs to follow the gingival zenith, not sit flat.
- Screw-retained single crown if the implant angulation allows. If the access channel exits the facial, come back with a plan before milling.
On form
- Match the contralateral #10 for crown length, mesiodistal width, and labial curvature. Do not just make it "a lateral", make it the mirror of this patient's own lateral.
- Keep the gingival margin level with the contralateral. No creeping above, no sinking below.
- Build the emergence profile narrow and gradual. The surgeon worked hard to keep the papillae intact; a bulky emergence will push them back.
On optics
- Match the contralateral at try-in, not at seat. The patient had waited years. No surprises on delivery day.
- Reproduce the incisal halo and the mamelon pattern of the contralateral, not a generic incisal translucent block.
- No metal read-through, no grey halo at the collar. The facial phenotype is on the thin side, so whatever is behind the ceramic has to be tooth-coloured.
- Match the surface texture. The patient's own teeth have visible perikymata; a flat, over-polished facial would read as fake under natural light even if the shade is right.
On function
- Light proximal contacts. The adjacent central and canine are both stable; the lab should not create a tight contact that would push them off position.
- Light centric contact in MIP, no contact in lateral or protrusive. A single-unit anterior implant does not share load the way a natural tooth does.
On delivery
- Deliver on the quoted schedule. The clinic had the patient booked. A missed day meant a rebook six weeks out.
Thirteen items, all of them lab-side. That is how we handle anterior single-unit implant work: everything that can be specified ahead of time, gets specified ahead of time.
Our production workflow
Every step below ran inside our Shenzhen facility. No outsourcing.
Step 1 — Case intake and file verification
Files landed through the clinic's Trios link: implant scan body, opposing arch, bite in MIP, implant packaging label photo, clinical photo set with the contralateral under polarised and non-polarised light.
Our CAD lead walked the file first and cross-checked the label photo against the scan body library — confirming brand, platform diameter, and connection before anything else happens. Guessing a platform from an STL alone is the fastest way to end up with an abutment 0.1 mm off and a crown that will not seat passively.
The access channel on the virtual plan exited slightly palatal of ideal, inside the lingual contour. Screw-retained was feasible. We locked that call before design opened.
Step 2 — Restorative plan written before any milling
Two decisions get written down before the mill opens:
- Abutment: titanium base plus a milled zirconia superstructure. On a facial envelope this thin, an unshaded titanium stump drops value and reads through the ceramic. The zirconia superstructure gives a tooth-coloured substrate behind the crown. Our bench rule, where facial ceramic finishes under roughly 1.2 mm: never leave unshaded titanium behind it.
- Framework: multilayer zirconia. The blank comes with a gradient built in — denser at the cervical, more translucent at the incisal. We pulled the opacity grade down one step from a posterior bridge spec; a single-unit lateral does not need the strength envelope of a three-unit molar case, and pulling it down returns layering space where translucency reads.
Ceramic distribution gets mapped at this stage, not left for the bench to improvise:
Zone | What we specified | Why |
|---|---|---|
Cervical third, facial | full ceramic envelope kept | opacity shows here if the layer is thin |
Mid-body, facial | reduction distributed here, not uniformly | layering space has to land where translucency reads |
Incisal edge | space preserved for layered incisal effects | the lateral's incisal halo sells the match |
Palatal | reduced more aggressively | out of the smile line |
Step 3 — Shade plan
A single tab photograph is not enough on a lateral between a bright central and a warm canine. Our standard anterior protocol is layered: stump shade of the abutment, plus three targets — cervical, body, incisal — with the contralateral used for shape and halo, and the central plus canine together setting the shade envelope. We photograph everything side by side in both lighting conditions, filed to the case tray.
Step 4 — Custom abutment design and milling
Abutment designed on the finalised virtual plan: Ti-base plus milled zirconia superstructure, margin following the gingival zenith of the contralateral (request #5), emergence narrow and gradual (request #6). Internal design review by the senior CAD lead covers margin position, emergence angle, screw channel axis, clearance from the opposing, and whether the superstructure thickness supports the planned ceramic allocation.
Milled on the dedicated anterior cell, sintered on the fixed abutment curve.
Step 5 — Crown CAD and milling
Crown designed on the finalised abutment position — not on an earlier draft, not on the pre-abutment plan. Multilayer zirconia blank selected against the shade map; blank orientation checked so the gradient landed with the long axis of the crown. Milled, sintered on our fixed temperature curve, transferred to the ceramic bench with the formula log attached to the case tray.
Step 6 — Ceramic layering
Build-up by the senior anterior technician — ten-plus years on anterior aesthetic work, the standard we hold for every lateral and central incisor case. Layered per the formula log: dentin, body, incisal translucent, mamelon mapping, surface texture. Each layer logged by batch number and firing cycle. Glaze, polish, texture, done against the contralateral photo under both lighting conditions.
The written log stays with the case. If anything came back from the clinic, the exact same crown could be rebuilt from the record alone.
Step 7 — Quality control
Three-stage QC runs on every case; we add an anterior-aesthetic sign-off on top for high-visibility work like this one.
Checked at the model and on the implant analog: passive seat (no rock, no bounce, no pressure needed to engage the screw), screw torque behaviour, proximal contacts (light, per request #11), static occlusion, lateral and protrusive clearance (request #12).
Checked on the ceramic: colour against the three-point shade map, value under daylight-corrected light, translucency in the correct thirds, fluorescence under UV, surface texture against the contralateral photo, midline, line angles, left-right symmetry.
Access channel finished under 10 mm of ceramic above the screw head, composite plug, floor liner for future removal — because the long-term literature in this indication shows implant survival at ten years is excellent while restoration survival sits lower. The crown is the part that eventually gets replaced; screw-retained means it can be, without destroying the abutment underneath.
Step 8 — Pack and ship
Crown and abutment packaged with the retention screw in a labelled sachet, torque value marked on the case card, double-checked at pack-out, shipped with tracking.
End to end, this case ran a paired abutment-plus-crown path with an added anterior-aesthetic review step. Our standard single implant crown turnaround is 2–3 working days, custom abutment 3–4 — this case took the longer path because every stage had to close before the next one started, not because any single step dragged.
Try-in feedback
The clinic sent a short report after seating.
From the dentist. The abutment seated passively on the first try — no rock, torque engaged clean, no need to re-cut access or adjust the margin. Occlusion came in as requested: light centric in MIP, clear in lateral and protrusive, light proximal contacts. Gingival margin sat level with the contralateral at placement, no blanching under the collar. One short glaze adjustment on an incisal line angle; otherwise seated and torqued without back-and-forth.
From the patient. Reported looking in the mirror and not being able to pick out which lateral was the implant — length, shape, and surface sheen read the same across the smile line. Noted that the gum colour around the new tooth looked the same as the neighbours, with no visible grey at the collar.
From us. The three decisions closed at Day 0 — tooth-coloured substrate behind the crown, opacity grade pulled down one step, three-point shade map rather than a single tab — were the three that would have shown up at try-in if any one of them had been wrong. The dentist's note on passive seat is the Day 0 platform-verification step paying off at the chair. Both notes went into the case archive alongside the formula log.
What this case says about how we work
Three things, said plainly.
Restorative decisions close before anything is milled, not at try-in. Substrate, framework grade, ceramic allocation, shade targets — all four decided in CAD, all four written down. That is why redos on anterior aesthetic cases are rare in our shop, and when one happens we rebuild from the formula log.
Every stage ran under one roof. CAD, 3D-printed model, CAM mill, zirconia sinter, ceramic build-up, QC. No case hand-offs. That is also why our turnaround on a case like this is predictable.
We hold the standard that fits the position. A lateral incisor is not a molar. It gets a dedicated anterior technician, an extra round of aesthetic QC, a layered shade map rather than a single tab, and a substrate choice made against the ceramic envelope. The clinical evidence on anterior implant restorations is clear that the margin for error is thinner here.
Working with us on your next lateral incisor implant case
To open a case like this one, send:
- Digital scan (Trios, iTero, Medit, Primescan, Shining 3D, DEXIS, Panda, or WeTransfer)
- Scan body on the fixture, plus the implant packaging label photo
- Opposing arch and bite in MIP
- Clinical photos: full-smile, retracted frontal, occlusal, shade photos with the tab in frame
- Contralateral under polarised and non-polarised light where you can get both
- Tissue phenotype and keratinized width
- Retention preference, or leave it to us to flag
Send what you have. If something is missing we come back for it before we start. We do not open a case on a half-prescription.
FAQ
Can you work with an implant platform that is not in your library?
Yes. We cover the majority of systems on the market, and where a platform is not directly in our library we work from the implant packaging label photo, the scan body data, and the physical connection — usually as a custom Ti-base plus zirconia superstructure. What we need before starting is a clear label photo and a seated scan body. Without both we will come back for them rather than design against a guess.
How long does a lateral incisor implant crown take?
A single implant crown is 2–3 working days from the day we receive the case, a custom abutment is 3–4. A paired abutment-plus-crown case like this one runs the longer path because every stage closes before the next opens, not because any single step drags. Turnaround is counted in working days from receipt; digital cases also avoid the shipping and customs leg a physical impression carries.
Why do you ask for photographs when a scan is already sent?
A scan tells us geometry, not optics. For a lateral specifically, the three-point shade map — cervical, body, incisal — is what decides whether the crown reads as translucent or reads as flat, and that cannot be extracted from an STL. We also need to see whether the contralateral is a normal lateral or peg-shaped, because the second case changes the reference strategy entirely. If polarised shots are not available at your clinic, send what you have in daylight and operatory light and we will flag the risk in writing before milling.
Istar Dental Lab, anterior implant restoration department. Facilities in Shenzhen and Huizhou, FDA, MDR, MHRA, and ISO 13485 registrations on file. Patient details anonymised; CAD files, material lot numbers, firing curves, and technician formula log retained in our case archive.