The Future of the Dental Lab Is Material Intelligence

Main Editorial Analysis

There is a trap in dental technology. Every time a new machine arrives, the industry asks the same question: What can it make?

A mill can make zirconia crowns. A printer can make models, guides, dentures, provisionals, splints, and now maybe permanent restorations. A scanner can turn analog steps into files. A new puck, resin, or block promises better strength, better esthetics, better fit, better speed, better margins, better everything.

But that is not the question that matters. The better question is: What can the lab prove?

That is the thread running through the work of Dr. Russell A. Giordano II, Professor of Restorative Sciences & Biomaterials at Boston University. His research profile is unusually relevant to dental labs because it sits at the intersection of materials science, CAD/CAM, ceramics, composites, 3D printing, finishing, polishing, and dental-material standards.

That combination matters. Giordano's work is not simply about zirconia or about 3D printing. It points to a larger shift: the dental lab is no longer just a production center. It is becoming a biomaterials decision center. The labs that win the next decade will not be the ones that merely buy new machines first. They will be the ones that can validate materials, control workflows, explain risks, and match the right indication to the right process.

The Material Is No Longer the Material

For most of dental lab history, materials seemed relatively easy to categorize: PFM, feldspathic porcelain, lithium disilicate, full-contour zirconia, layered zirconia, acrylic dentures, milled PMMA, or printed models. Each material had a familiar identity and a familiar risk profile.

That world is disappearing. Today, a "ceramic" may be a traditional glass ceramic, zirconia, a polymer-infiltrated ceramic network, a resin-matrix ceramic, or a ceramic-filled printable resin. A "digital denture" may be milled, printed, monolithic, bonded, layered, stained, characterized, or manufactured through a validated closed system.

A restoration is not just a material. It is composition + machine + design + milling or printing parameters + curing or sintering + finishing + polishing + bonding + aging + indication. Change one piece and you may change the clinical result. A printed crown resin is not just a resin. It is a resin printed on a specific machine, at a specific orientation, washed under specific conditions, post-cured in a specific unit, finished in a specific way, and bonded according to a specific protocol.

A zirconia crown is not just zirconia. It is a certain yttria level, translucency class, layer position, sintering schedule, surface treatment, wall thickness, connector design, and cementation strategy. A milled ceramic restoration is not just a block. It is a block plus burs, coolant, toolpath, margin design, chipping behavior, and post-mill polishing.

This is the first big theme: the material is the workflow.

The Word 'Ceramic' Is Breaking

The most obvious example is the changing meaning of the word ceramic. The ADA's 2023 porcelain/ceramic definition removed earlier manufacturing-language restrictions such as "pressed, fired, polished or milled" and instead moved toward a definition based on materials containing predominantly inorganic refractory compounds.

That is not just a coding technicality. It is a market signal. Once the definition became less tied to a specific manufacturing method, ceramic-filled 3D-printed materials could move closer to the same commercial and reimbursement conversation as traditional ceramic restorations. But the business implication can outrun the materials science.

A printable, ceramic-filled resin may meet a category definition. That does not mean it behaves like zirconia. It does not mean it behaves like lithium disilicate. It does not mean it should be used for every indication where a dentist has historically prescribed a ceramic crown.

Giordano's continuing-education work on hybrid ceramic permanent restorations gets directly at this issue by comparing machining and 3D printing, physical and mechanical properties, filler content, elastic modulus, and evidence for 3D-printed permanent restorative materials. The category label is not enough. A lab should not ask only whether something is a ceramic. It should ask what the filler content is, whether filler is reported by weight or volume, what the elastic modulus is, what the wear behavior is, how stable the color is, what surface treatment is required, which standard was used, and which indication was actually validated.

3D Printing Is Crossing a Line—But Crossing Is Not Arrival

For years, dental 3D printing was easiest to understand in terms of support products: models, surgical guides, splints, trays, try-ins, and temporary appliances. Now the conversation has moved into final restorations.

That is a big deal. But it should not make labs reckless. The research does not say, "Printed permanent restorations are fake." It says something more useful: printed permanent restorations are real enough to evaluate seriously, but not mature enough to treat casually.

A 2025 narrative review of 3D-printed temporary and permanent resin restorations found that mechanical properties have improved, while challenges remain around color stability, water sorption, solubility, anisotropy, preprocessing, post-processing, and the absence of systematic benchmarking.

That is the sober middle ground labs need. The hype version says permanent printed crowns are here. The fear version says printed restorations are just resin. The useful version says: some printed materials may be appropriate for some indications under some workflows with some evidence. Labs should treat printed permanent restorations like a new product line with a validation ladder: understand the material class, test the workflow internally, limit the indication, track remakes and failures, and expand only where evidence supports expansion. The worst thing a lab can do is turn a promising material into an overpromised product.

Milling Is Mature—But Not Invisible

It is tempting to think this level of scrutiny applies only to 3D printing. It does not. One of the most practical Giordano-associated papers found that machining damage matters. The 2025 Journal of Prosthetic Dentistry study examined surface roughness and edge chipping in CAD/CAM materials and correlated machining damage with material strength.

Milling damage is not cosmetic. It can be structural. That should change how labs think about bur life, margin chipping, toolpath strategy, nesting, coolant, post-mill inspection, and finishing protocols. A crown margin that looks a little rough is not merely an esthetic issue. It may be a signal that the workflow is degrading the material.

In this sense, milling and printing are more alike than they seem. Both are digital. Both are machine-mediated. Both can produce consistent results. Both can also produce consistently bad results if the process is poorly controlled. Digital dentistry does not eliminate craftsmanship. It moves craftsmanship upstream into process design.

Zirconia Is Not a Commodity

No material exposes the danger of oversimplification better than zirconia. Labs often sell zirconia as if it were one category. But modern zirconia is a family of materials with different tradeoffs among strength, translucency, aging behavior, and indication.

A 2024 review on recent advances in dental zirconia explains that one common way to improve translucency is to decrease alumina and increase yttria content. The tradeoff is that higher-yttria zirconias may contain more cubic phase and show decreased mechanical properties compared with tougher 3Y zirconia.

This is not a minor technical distinction. It is a case-selection issue. A high-translucency anterior crown and a posterior bruxer bridge should not be made from the same mental model of zirconia. A multilayer puck is not mechanically identical from top to bottom.

The lab that understands this can sell better. Instead of asking dentists whether they want zirconia, the lab can guide them through strength versus esthetics, anterior versus posterior, single unit versus bridge, implant-supported versus tooth-supported, minimum thickness, cementation, retention, and bruxism risk. The future lab does not just take prescriptions. It helps design risk.

Dentures Show the New Evaluation Mindset

The digital denture category is another example of why the best answer is rarely simply printed or milled. A 2024 study comparing printed and milled denture base materials found that milled materials showed higher flexural strength than printed materials under the tested conditions.

That sounds like a clean victory for milling until you widen the evaluation. Another 2024 study compared mechanical, optical, and physical properties of 3D-printed denture base materials with milled and conventional references, including fracture toughness, translucency, stain resistance, and water sorption.

That is the right way to think. A denture base is not only a flexural-strength specimen. It is a prosthesis that needs fit, toughness, esthetics, repairability, stain resistance, tooth bonding, patient comfort, repeatability, and economic viability. Milling may win on some mechanical properties. Printing may win on speed, scalability, reproducibility, file storage, low waste, and multi-material workflow potential. Conventional processing may still have advantages in familiarity, repair culture, and clinical acceptance.

The right question is not which one is best. The right question is best for what, for whom, under which workflow, and with what failure mode.

Printed Models Are Not Just Plastic

Even simple printed products require discipline. A Giordano-group study on 3D-printed dental models evaluated the accuracy of printed models subjected to different storage conditions across printer/material combinations.

This may sound like a small operational detail. It is not. If printed models change dimensionally under heat or storage stress, then model accuracy becomes a logistics issue. A model left in a hot car, stored near a window, delayed in shipping, or used beyond an internal shelf-life window may become less reliable.

Any printed object that depends on accuracy needs an environmental protocol. That includes models, surgical guides, aligner models, splints, denture try-ins, and potentially printed restorations. The best labs will not merely print. They will document resin lot, printer, build orientation, layer thickness, wash time, solvent age, post-cure unit, post-cure cycle, storage condition, use-by window, and inspection method.

Additive Manufacturing Is Not One Thing

There is another category mistake labs need to avoid: treating all 3D-printed dental materials as if they belong to the same technological family.

A printed model resin, printed surgical guide resin, printed denture base resin, printed temporary crown resin, ceramic-filled printed crown resin, and true additively manufactured ceramic are different categories.

A 2025 systematic review on additive-manufactured ceramics found that additive manufacturing is expanding as an alternative to conventional pressing and milling techniques for ceramic restorations, but that experimental and clinical evidence on final ceramic products remains insufficient.

This matters because the phrase "3D-printed ceramic" can blur two very different things: a ceramic-filled printable resin or composite, and a true printed ceramic that becomes ceramic after debinding, sintering, or related processing. Those are not the same from a materials-science perspective. They are not the same clinically. They are not the same from a lab workflow standpoint.

A lab that understands the distinction earns trust. A lab that hides the distinction may win a sale and lose a relationship.

The New Lab Operating System

So what should dental labs actually do with this? The answer is not to slow down. The answer is to become more disciplined. The labs that thrive will build an operating system around materials intelligence.

• Build a material evidence file: Every major material in the lab should have a one-page scorecard. Not a brochure. Not a sales sheet. A real evidence file. It should include material class, manufacturer, indication, standard tested, flexural strength, modulus, fracture toughness where available, wear data, stain data, water aging, thermocycling, bonding protocol, surface treatment, minimum thickness, contraindications, and evidence level.
• Create indication ladders: Do not launch every new material into every indication. For a printed permanent material, the ladder might start with single-unit low-load cases, then selected premolars, then controlled posterior use, then higher-load cases only if internal and external evidence supports it.
• Track failures by workflow, not just material: Most labs track remakes too broadly: zirconia fracture, shade remake, debond, margin open, doctor adjustment. That is not enough. The useful question is which workflow produced the failure: which mill, which bur age, which puck, which layer position, which printer, which orientation, which curing cycle, which finishing protocol, which cementation instruction, which doctor, and which indication.
• Give doctors cementation cards: As material categories multiply, cementation confusion becomes one of the biggest hidden risks in the market. Zirconia, lithium disilicate, feldspathic porcelain, resin-matrix ceramics, hybrid ceramics, printed composites, and temporary resins do not all want the same surface treatment. A lab should send material-specific cementation instructions with every case where protocol matters.
• Sell the validation story: Most labs market the output: beautiful zirconia crowns, fast digital dentures, printed nightguards, same-day restorations, premium esthetics. That is fine, but it is increasingly generic. The stronger message is: "We validate every material before we recommend it."

The Lab as a Biomaterials Advisor

The most important shift is psychological. For decades, the lab's role was downstream from the prescription. The dentist prescribed. The lab fabricated. That model still exists, but it is becoming incomplete.

Materials have become too complex. Digital workflows have too many variables. Product categories are changing too fast. Marketing claims are too aggressive. Dentists are busy. Manufacturers are incentivized to simplify. Patients expect speed, esthetics, and durability at once.

That creates an opening. The modern lab can become the dentist's biomaterials advisor. Not in an academic way. In a practical way.

A dentist sends a posterior bruxer case and asks for high-translucency zirconia. The lab can explain the tradeoff. A dentist asks for a printed permanent crown on a high-load molar. The lab can recommend a safer indication or a different material. A dentist wants a digital denture. The lab can explain when milled, printed, or conventional processing makes the most sense.

This is how a lab escapes commodity pressure. Not by becoming louder. By becoming smarter.

The Core Lesson

New dental materials should not be adopted because they are new, printable, millable, reimbursable, or well-marketed. They should be adopted because the lab understands how they behave inside a controlled workflow.

The future belongs to labs that can answer six questions: What exactly is this material? What evidence supports this indication? Which workflow variables change the result? How should it be finished and bonded? What are the likely failure modes? How does our internal data compare with the published evidence?

The labs that answer those questions will not merely fabricate restorations. They will guide clinical decisions, reduce remakes, help dentists choose intelligently, make technology less confusing, and turn materials expertise into a commercial advantage.