Temporary Dentures

Material and Design Options

Base material routes

Four routes are available. They are not graded versions of the same product — they trade against each other on strength, processing time, adjustability, and appearance.

Heat-cure PMMA. The conventional route. The base is packed and polymerized under heat and pressure, giving good strength and dimensional stability and a low-porosity result. It processes well against a cast or printed model and accepts chairside adjustment. This is the default for most interim cases, and the reason is mechanical rather than cosmetic. PMMA's properties in prosthodontic applications are covered in a review of polymethyl methacrylate in prosthodontics and in a broader review of polymeric denture base materials.

Self-cure acrylic. Sets without external heat. Faster, and useful when a case cannot go through a full processing cycle or when you want to adjust quickly at the chairside. The trade is real: self-cure resin has lower strength and higher residual monomer content than heat-cure, and it is more prone to warpage over time. Appropriate for short intervals; less ideal if the appliance will see heavy function for months.

Injection-molded thermoplastic. Nylon-family and acetal bases are injected under pressure rather than packed. They flex rather than fracture, can be esthetically pleasing without visible metal, and can be modified — which matters if the patient has a metal sensitivity or the appliance needs to be relieved around an implant. The trade is adjustability: these resins cannot be ground and polished the way PMMA can, and a poorly planned relief is hard to correct later. Nonmetal clasp indications and their material limits are examined in the definition and indications paper on non-metal clasp dentures and the follow-up on material properties and clinical features; the periodontal question is covered in a randomized cross-over trial of thermoplastic RPDs and in the evidence review on nonmetal clasp dentures.

3D-printed resin. A fully digital route from scan to appliance. The advantages are genuine — the model is reproduced exactly, and a remake reproduces the first result rather than re-deriving it. Practical fully digitized flipper fabrication workflows and a fully digital workflow for interim flexible partial dentures both document the approach, and 3D printing for removable prosthetics reviews where it is heading. The constraint is that it suits tooth arrangement and base form better than it suits cases demanding substantial undercuts.

Tooth options

• Composite resin teeth — bond reliably to an acrylic base and adjust without chipping. Our default for interim use.
• Acrylic resin teeth — the conventional choice; bond well and are forgiving during adjustment.
• Porcelain — better wear resistance and translucency, but heavier, more brittle at the connector, and it needs a retentive mechanism. Select it when esthetic demands justify the tradeoff.

Shade and mold can be specified by guide and value, and you can name a brand and shade reference on the work order. If you want a specific base material brand and lot for a case, say so on the prescription — we work to the brand and batch you specify rather than a default, and batch, brand, and origin documentation can be provided per case.

Design elements worth stating explicitly

The more of these you specify, the fewer assumptions we have to make on your behalf:

• Rest seat position and form — whether one is prepared, and on which tooth
• Post dam — whether required, and where the cast is to be altered
• Border extent — full extension versus modification, and any area to deliberately shorten
• Clasp type and location — wrought wire, cast, or attachment
• Centric relation record — whether we should record against it or hold existing vertical dimension
• Areas to relieve — implant sites, grafted tissue, tender areas

If you would rather we design these, say so explicitly. Leaving it unstated is not the same as delegating it.

When Patients Need One

Interim appliances show up in a small number of recurring situations, and the right material choice usually differs between them.

Healing after extraction. A partial or full interim appliance maintains appearance and function while the socket remodels and the treatment plan is still being decided. This is the classic case, and it is the one most often ordered as a same-day immediate.

Implant waiting period. Between implant placement and the restorative phase, patients need teeth. The appliance has to be designed around the planned abutments so it can be relieved or removed without disturbing them when the definitive stage arrives.

Bridging interim to definitive. When a long multi-unit case is staged — full-arch work, grafted sites, a series of extractions — an interim appliance holds the functional and esthetic space between visits. Clinical reports on staged prosthetic rehabilitation and on immediate denture fabrication as a clinical report both work through the sequencing decisions this involves.

Pre-surgical and grafted sites. Where tissue volume is changing for a planned procedure, an interim gives the patient a functional stopgap and a preview of the intended result.

Tell us which of these applies on the work order. The design requirements — and often the material route — differ enough between them that guessing produces rework.

Inside the Fabrication Process

The sequence below is the standard route. Which of these nodes actually apply to a given case depends on what you ordered.

1. Case intake and evaluation — data checked, design requirements read, questions raised before work starts
2. Model or digital file preparation — cast poured from the impression, or the scan file verified and prepared for production
3. Record verification — the bite registration is checked against the opposing arch before arrangement
4. Tooth arrangement — on a record base or wax rim, positioned to your occlusal target
5. Try-in stage (where included) — you check arrangement, lip support, phonetics, and occlusion against the mouth before the base is processed
6. Base processing — flasking and packing, or the digital equivalent
7. Finishing — borders, contouring, and polish
8. Inspection — see Quality control
9. Delivery

Why the try-in stage matters

A try-in is the only point in this sequence where you can see the appliance before it becomes acrylic. It is where you verify the things that cannot be corrected afterwards:

• Whether the tooth position supports the lip
• Whether the incisal plane is where you intended
• Whether the patient produces sibilants cleanly
• Whether the centric record seats where you expect it to

Skipping it to save a day is a reasonable call in a straightforward anterior case. In a case with an altered vertical dimension, a single anterior replacement, or an opposed dentition under heavy load, it is the cheapest insurance available — an error caught at try-in costs a day, and the same error caught at delivery costs the appointment.

Staged delivery

Where the case allows it, we can deliver in two stages — a try-in appointment, then completion after your approval. Ask for it when you submit; whether a given case can be staged depends on its configuration, and we will tell you at the order stage rather than after the fact.

Quality Control and Rework

Inspection happens before an appliance leaves us, and it is done by a QC group that is separate from the production bench — roughly 25 people work in quality control across the lab.

At finishing and inspection, the checkpoints include:

• Fit verified against the master model, not against the working cast
• Occlusal interferences removed and the vertical dimension confirmed against the record
• Borders and surfaces finished to the specified contour
• Tooth position and shade confirmed against the work order
• Tissue-contact areas checked for polish and for any that might irritate healing tissue
• Disinfection and protective packaging before packing

Finishing and inspection requirements of this kind are specified in detail in the US Air Force dental laboratory technical data sheet on denture laboratory specialty work, and the removable partial denture manual produced by Dalhousie University's prosthodontics department sets out comparable master-model and clasp-position verification steps.

On rework: if something is wrong with an appliance we made, tell us what you are seeing and send the case back. Our first question will be about the data rather than the appliance — whether the tissue state has changed since the impression was taken, whether the patient is wearing it as instructed, whether the fit was adjusted at insertion. On an interim appliance, fit changes over days and weeks are expected, and a significant portion of what looks like a manufacturing problem is an adjustment that was never made. We would rather resolve that with a chairside adjustment than remake an appliance that was built correctly.

We also ask you to tell us before returning a case, rather than after. A short conversation at the point of the problem is faster than a remakes queue.

Turnaround and Capacity

We quote turnaround per case rather than publishing a flat figure, because the variables are real and a single number would be misleading: the material route, whether a try-in stage is included, whether a staged delivery applies, the completeness of the submitted data, and current production load all move the date. Give us your target delivery date at submission and we will confirm what is achievable against it before work starts — including telling you if the date will not work, so you can plan around it.

On capacity, the removable denture department runs about 55 technicians. Total removable denture output runs roughly 4,000 cases per month in normal season and 6,500 per month at peak, backed by trained standby staff so that peak periods do not degrade into missed dates. We manufacture in two plants, Shenzhen and Huizhou, and every stage from case intake through inspection happens in-house — design, production, and quality control are not split across third-party labs.

If you are assessing us for ongoing volume, the relevant facts are those numbers and the fact that you can verify them yourself: we accept factory visits and video inspections of the production floor.

Risks Worth Naming

Two risks are specific to removable partials and are worth raising with the patient, even though the decision about them belongs in your chair.

Fit loss and tissue trauma. As the ridge remodels, pressure concentrates on the tissues least able to tolerate it. Untreated, this produces sore spots and, in some patients, denture stomatitis. Scheduled relines and early adjustment are the mitigation.

Swallowing or aspiration. This is rare but it is documented, and the risk is highest with a small, unlatched unilateral partial denture worn during sleep. There are published case reports of unnoticed swallowing of a unilateral removable partial denture, of a swallowed partial denture, and of near aspiration of a full arch partial denture. Advising patients to remove partial dentures for sleep is a reasonable default, and it is worth saying explicitly at delivery.

Broader maintenance guidance, including evidence-based denture care recommendations, is available from the ADA on denture care and maintenance and from the Journal of the American Dental Association's guidelines on complete denture care. Whether a specific appliance is worn continuously or removed nocturnally is a clinical decision we leave to you.

How to Submit a Case

This is the part of the process most worth reading carefully. Almost everything we can do well depends on what arrives with the case, and the three things that most often cause delays are a thin prescription, a distorted impression, and an unspecified shade.

1. What the prescription should contain

An interim partial is a prescribed device, not a generic appliance — it still requires a prescription and a design. State the following:

Anything you leave blank becomes a question we have to ask you, and that question costs a day. Filling the form completely usually makes it unnecessary.

2. Choosing a submission medium

Both routes work. They are not equivalent, and mixing them within a case is where problems start.

If you are moving your removable cases to a scanner, the transition is usually straightforward — but tell us your scanner make and model with the first case so we can confirm the export path before you commit a full workflow to it.

3. Sending digital files

Send the scan file with the case. We work from the file itself rather than re-scanning, and we check the following on receipt:

• File integrity — opens completely, mesh is closed and manifold, no holes or self-intersections
• Anatomy coverage — full ridge, relevant landmarks, no truncated scan at the posterior
• Bite registration — supplied separately, correct material, not taken in a distorting medium
• Scan stage — whether pre-extraction or post-extraction, and whether the tissue is in the state you intend the appliance to fit

When something is wrong with a scan, we tell you which item failed rather than returning the case unexplained. If the ridge scan is sound but the bite registration is unusable, we can often proceed and ask you to re-take only that part.

4. What to send with the case

• Prescription or work order
• Impression or scan file
• Bite registration
• Shade specification (tooth and gum)
• Any opposing-arch data, when relevant to occlusal design
• Delivery date you are working toward
• Your case reference, so we can quote it back to you on delivery

Sending an Inquiry

You do not need a finished case to start a conversation. An inquiry can be as simple as a description of the clinical situation and the delivery date you are working toward.

Useful to include:

• What the appliance needs to do and how long it needs to do it
• The span, or a photo or scan if you have it
• Material preference, or a request for our recommendation
• Whether you need a try-in stage or staged delivery
• Your submission medium — impression or scan
• The target date
• Your region and any documentation requirements that apply to you

We will come back with a quotation, a realistic date, and any questions the data raised. If a case sits outside what we should be taking — that happens, and it is better to find out before the case is shipped than after — we will say so and point you elsewhere.

Questions Patients Ask

Patients ask these, and they ask them of whoever is in front of them. Answers here are from the lab side; anything clinical stays with you.

How long will my temporary denture last? Long enough to cover the treatment stage it was made for. Because the underlying tissues change during healing, an interim appliance is designed to be adjusted, relined, or replaced rather than to last indefinitely. Ask us at delivery which applies to your case.

Will it affect how I speak? Some adjustment is common, particularly with a new tooth position. Speech usually settles as you get used to the appliance. If it does not, a chairside adjustment usually resolves it.

Can I eat normally with it? Expect to modify your diet initially — softer foods, and avoiding very hard or very hot items — while your tissues settle and you adapt. Your clinician will give you specific guidance for your case.

Will it hurt? An interim appliance should not hurt. If it does, something needs adjusting — usually a pressure point where the tissue has changed since the impression was taken. That is a normal, correctable situation; do not simply stop wearing it and assume it will improve.

What if it comes loose? Looseness over weeks is expected as the ridge changes. If it becomes loose enough to move or drop during function, contact your clinician for an adjustment or a reline rather than continuing to wear it loosely.

Should I take it out at night? Your clinician will advise on this, and the advice depends on your specific situation. It is commonly recommended to remove partial dentures during sleep.

Interim and temporary dentures manufactured in-house at Istar Dental Lab, Shenzhen and Huizhou. Customary denture care guidance is available from the ADA.