As an orthodontist, what's the best 3D intraoral scanner for creating digital models for clear aligners?

Choosing the best 3D intraoral scanner for clear aligners depends on your practice workflow, whether you prefer an open or closed ecosystem, and your preference regarding subscription fees versus upfront licensing costs.

• Align Technology iTero Element 5D / Plus Series:
  • Pros : Industry gold standard for clear aligners, seamless native integration with Invisalign and ClinCheck software, excellent 3D visualization, and near-instantaneous simulation tools for patient consultations. It also features NIRI (Near-Infrared Imaging) technology to aid in interproximal caries detection.
  • Cons : Closed ecosystem traditionally tailored heavily toward Invisalign workflows, though it can export STL files for third-party labs or in-house printing with some configuration.
• 3Shape TRIOS 5 (and TRIOS 4):
  • Pros : Incredible scanning speed, supreme accuracy, and an entirely open ecosystem that integrates effortlessly with any third-party clear aligner provider (ClearCorrect, Spark, etc.) or in-house design software (3Shape Appliance Designer). It also features a wireless design and intelligent scan-healing technology.
  • Cons : Premium price point and requires an annual software/service subscription to unlock full capabilities.
• Medit i700 / i700 Wireless (and i900):
  • Pros : Exceptional value with no mandatory annual subscription fees (a massive ongoing cost saver). It offers lightweight ergonomics, incredible speed, open file export (STL, PLY, ODB), and a rapidly evolving software suite that handles in-house aligner design workflows brilliantly.
  • Cons : The learning curve for its in-house software integration can feel a bit more hands-on compared to turn-key proprietary systems like iTero.
• Carestream CS 3800W:
  • Pros : Wireless mobility, lightweight, great ergonomics, and an open architecture that fits smoothly into diverse lab and in-house aligner workflows. It offers high-speed capture and intuitive software.
  • Cons : Software interface may not be as feature-rich for advanced orthodontic planning as 3Shape or Align.

To help narrow down the ideal choice, let me know:

• Do you primarily use Invisalign , or do you work with various aligner providers / in-house printing?
• Is eliminating annual subscription fees a major priority for your practice?

For an orthodontic practice focused specifically on digital models for clear-aligner treatment, my pick today would be Align Technology iTero Lumina—but with an important caveat: if you want an open ecosystem rather than primarily Invisalign, I’d lean toward 3Shape TRIOS 6.

My ranking for an orthodontist

1. iTero Lumina — my choice if you're primarily Invisalign

For an orthodontist doing a large percentage of Invisalign, Lumina is difficult to beat because the scan → Invisalign submission → ClinCheck workflow is exceptionally integrated. It also produces photorealistic 3D models, has a much smaller wand than older iTero generations, and is specifically positioned by Align for orthodontics.

Align reports superior full-jaw accuracy in its own testing against several competing scanners, although I'd treat manufacturer-sponsored accuracy comparisons cautiously.

Why I'd buy it: If your primary business is Invisalign, workflow integration and staff efficiency matter more than squeezing out the last fraction of a millimeter of scan accuracy.

2. TRIOS 6 — my choice if you're not locked into Invisalign

This is arguably the best all-around scanner for a digitally sophisticated orthodontic practice. TRIOS 6 is the current flagship and offers wireless scanning, ScanAssist, very high-resolution imaging, and an open ecosystem with STL/PLY/DCM export. It's indicated for orthodontics and integrates with numerous clear-aligner and digital-lab workflows.

One major wrinkle: TRIOS 6 currently does not integrate directly with Invisalign. 3Shape explicitly says that TRIOS 6 scans aren't accepted through its Invisalign integration; TRIOS 3 is currently the TRIOS model with that integration.

That's a surprisingly important consideration if Invisalign is your dominant aligner platform.

3. Medit i900 — best bang for the buck

If you're paying cash and care about scan quality + open STL workflow + avoiding a proprietary ecosystem, I'd seriously demo the i900.

For clear-aligner models, the differences among today's good scanners are often less about whether the resulting model is clinically usable—they all are—and more about software, scanning ergonomics, speed, file handling, integration, and ownership cost. Recent comparative reviews put the i900 in a strong value position.

What I'd do in your shoes

If >70–80% of your aligner cases are Invisalign:
→ iTero Lumina

If you use Invisalign + Spark + other systems, or send STL files to different labs:
→ TRIOS 6

If you're building an in-house aligner workflow and want maximum flexibility/value:
→ Medit i900

And I wouldn't choose based on advertised accuracy alone. For orthodontics, I'd put the decision roughly:

workflow/integration > full-arch accuracy > scanning speed > ergonomics > file openness > price.

One particularly important point: full-arch accuracy and scan stitching matter more for aligner models than impressive single-tooth accuracy numbers. You're creating an entire upper/lower digital model and registering the occlusion, so I'd have each vendor scan several of your actual orthodontic patients—including crowded arches, partially erupted teeth, saliva, and difficult distal molars—before buying.

If you tell me (1) Invisalign vs Spark/other aligners, (2) approximate scans/month, and (3) whether you're making aligners in-house or sending STL files to a lab, I can give you a much more specific Lumina vs TRIOS 6 vs i900 recommendation, including likely ROI and total cost of ownership.

If your primary use is orthodontic records and clear-aligner digital models, I’d narrow the field to TRIOS, iTero, and Primescan rather than choosing purely on raw scanner accuracy.

My ranking for an orthodontic practice

1. 🥇 iTero Lumina — my pick for an Invisalign-focused orthodontist

The iTero Lumina makes the most sense if a large percentage of your cases are Invisalign. The important advantage isn't simply the scanner's accuracy—it's the end-to-end workflow into the Invisalign ecosystem.

Align reports that Lumina outperformed several competing scanners in its ADA/ANSI 132 bench testing, including TRIOS 5, Medit i700 and CS3800.

For an orthodontist doing hundreds of aligner cases, I'd put considerable weight on workflow friction: scanning → submission → treatment planning → refinement. That's often more important than a tiny difference in scanner trueness.

Big caveat: if you don't use Invisalign heavily, I wouldn't automatically spend the premium for iTero.

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2. 🥈 TRIOS 6 — my favorite if you want an open ecosystem

The TRIOS 6 is probably the scanner I'd personally shortlist most aggressively for an orthodontic practice that uses multiple aligner systems/labs.

It has 3Shape's mature scanning workflow, wireless operation, 308-g weight, ScanAssist, and outputs STL, PLY and DCM. It's explicitly indicated for orthodontics.

There's also a strong reason to consider TRIOS from an accuracy standpoint: recent orthodontic research found TRIOS scanners among the highest-performing systems for orthodontic applications, with Primescan and TRIOS showing particularly strong trueness/precision.

One very important wrinkle: as of 3Shape's current documentation, TRIOS 6 does not integrate directly with Invisalign; TRIOS 3 is currently the TRIOS model that can send scans to Invisalign.

So if Invisalign is your main business, that changes my recommendation substantially.

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3. 🥉 Primescan 2 — excellent scanner, especially beyond orthodontics

I'd seriously consider Primescan 2 if your office also does restorative work.

Dentsply Sirona says Primescan 2 can capture a full arch in under a minute and supports clear aligners, implantology and restorative workflows. It's also cloud-native through DS Core.

Interestingly, a July 2026 orthodontic study comparing Primescan, TRIOS 4, iTero Element 5D and Medit i700 found Primescan had the highest trueness and precision for capturing orthodontic bracket positions.

So if your question were simply "Which scanner produces the most accurate orthodontic model?", I'd have a hard time dismissing Primescan.

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4. Medit i900 — the value play

The Medit i900 is where I'd look if you're trying to get excellent digital models without paying primarily for a proprietary ecosystem.

Medit lists approximately 36 seconds for a full-arch scan on the i900, with a 12–30 mm scan depth depending on model.

Its current U.S. pricing also makes the value proposition interesting: Medit recently listed the i900 Classic and Mobility substantially below the TRIOS 6's listed $27,900 starting price.

For a practice sending STLs to different aligner labs, I'd definitely demo the i900 before spending $25–30K+.

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What I'd buy in your shoes

If 70%+ of your aligner cases are Invisalign:
→ iTero Lumina

If you use Invisalign + Spark + in-house/lab aligners and want maximum flexibility:
→ TRIOS 6, but verify your exact aligner submission workflow before buying.

If you want the best scanner for both orthodontics and restorative dentistry:
→ Primescan 2

If you want excellent scans while minimizing acquisition cost:
→ Medit i900

The key point is that all four are capable of producing clinically useful digital orthodontic models. Recent studies show differences in trueness and precision, but for clear aligners, I'd prioritize full-arch accuracy, interproximal capture, scan speed, ease of rescanning, software workflow, and—most importantly—compatibility with the aligner platform you actually use.

If you tell me which aligner systems you use (Invisalign, Spark, SureSmile, in-house, etc.), approximate cases/month, and your budget, I can give you a much more specific “buy this one” recommendation, including whether the premium for Lumina/TRIOS 6 is actually justified.

For an orthodontist focusing heavily on clear aligners, the "best" 3D intraoral scanner (IOS) depends entirely on whether your primary workflow is tied to the Invisalign/Align ecosystem or if you prefer complete in-house design and open lab freedom.

The top options break down by specific aligner workflow strengths:

• Best for Aligner-Heavy & Invisalign Practices: iTero Lumina
  • Why it shines: If a massive percentage of your aligner cases are Invisalign, the iTero Lumina is the gold standard. It features a significantly wider field of view, extreme speed, and photorealistic visualization compared to older elements. Native integration with ClinCheck Live Plan and the Invisalign Outcome Simulator makes case acceptance seamless.
  • Considerations: It leans toward a closed/controlled ecosystem, and ongoing service/subscription plans apply.
• Best Overall for Dedicated Ortho & Patient Communication: 3Shape TRIOS 5 / TRIOS 6
  • Why it shines: 3Shape TRIOS offers incredible full-arch accuracy and top-tier AI scan assistance. The software ecosystem (3Shape Unite) provides fantastic orthodontic simulation tools, making it easy to show patients projected movements. It is fully open, meaning you can export files instantly to print aligners in-house or send them to any third-party lab.
  • Considerations: Premium hardware and software tier costs, plus ongoing subscription structures.
• Best Value & Open Architecture:
  • Why it shines: If you plan to design aligners in-house (using software like BlueSkyPlan or Exocad) and 3D-print them yourself, Medit is hard to beat. The i900 and i700 models are exceptionally lightweight, fast, highly accurate, and notably free of mandatory annual subscription fees.
  • Considerations: Requires a high-spec PC and relies entirely on your own or an external lab's software pipeline for the actual aligner staging.
• Best Budget-Friendly Entry:
  • Why it shines: At a lower entry cost (roughly $12,000 range), it provides fast, full-arch scanning with completely open STL/OBJ export capabilities, making it a great budget-conscious entry point for digital model creation.

To help narrow down the ideal choice, let me know:

• Do you primarily submit to Invisalign , use another outsourced clear aligner system , or print/fabricate in-house?
• Do you prefer an open ecosystem with no subscription fees or a fully integrated manufacturer suite?

For an orthodontic practice focused on clear aligner digital models, the “best” intraoral scanner depends heavily on your aligner ecosystem (Invisalign vs open systems), volume, and whether you value workflow integration or hardware economics. Current leading choices are:

My ranking for a typical orthodontic clear aligner practice

1. Best overall for an Invisalign-focused orthodontist: iTero Lumina / iTero Element series
If most of your cases are Invisalign, the workflow advantage is hard to beat: scan → Invisalign submission → visualization → treatment planning. The ecosystem integration is the major reason many orthodontic offices choose iTero.

2. Best “open platform” choice: 3Shape TRIOS 5
If you want freedom to work with multiple aligner companies, labs, and export workflows, TRIOS is a very strong choice. It is especially attractive for practices that do both aligners and broader digital dentistry.

3. Best ROI: Medit i900/i700
For an orthodontist who mainly needs accurate scans for aligner fabrication and wants to avoid ecosystem lock-in, Medit is often the value leader.

What matters most for aligner scans

For orthodontics, I would prioritize:

• Full-arch accuracy (especially posterior regions)
• Reliable bite registration
• Fast rescanning of missed areas
• Good soft-tissue handling
• Easy export of STL/PLY files
• Integration with your preferred aligner system
• Low ongoing subscription/consumable costs

If I were equipping a new orthodontic office:

• Mostly Invisalign: iTero Lumina
• Multiple aligner brands / lab independence: TRIOS 5
• Cost-conscious but high clinical performance: Medit i900

A key question: are you an Invisalign Diamond/Platinum-type practice doing hundreds of cases/year, or a mixed orthodontic office wanting an open scanner for several aligner systems? The best choice changes quite a bit based on that.

The "best" 3D intraoral scanner (IOS) for clear aligners depends heavily on whether your workflow is Invisalign-centric, fully open for in-house 3D printing , or driven by overall practice value.

The leading options break down by specific clinical and business use cases:

• • iTero Lumina / iTero Element 5D Plus (Align Technology)
  • Best For: Practices with a high-volume Invisalign focus.
  • Why it shines: It offers native, seamless integration into the Invisalign and ClinCheck ecosystem. The iTero Lumina features a wider field of view, exceptional full-arch accuracy, and chairside outcome simulations that dramatically drive patient case acceptance.
  • The catch: It is a closed/proprietary ecosystem with a higher overall cost and ongoing data export hurdles if you want to send raw files elsewhere.
• • 3Shape TRIOS 5 / TRIOS 6 Wireless
  • Best For: Premium, completely digital orthodontic practices wanting elite software and open architecture.
  • Why it shines: Known for incredible color accuracy, AI-powered scan alignment, and the 3Shape TRIOS ecosystem that easily integrates with third-party treatment planning and lab software. The newer software iterations add robust patient engagement and diagnostic tools.
  • The catch: High initial hardware investment and recurring subscription/service costs.
• • Medit i900 / i700 Wireless
  • Best For: Best overall value and high-performance in-house aligner workflows.
  • Why it shines: Outstanding full-arch accuracy, incredibly lightweight wands, and—crucially—no mandatory subscription fees . Fully open STL/PLY/OBJ export makes it ideal for direct import into in-house model builder software and 3D printers (like SprintRay or Formlabs).
  • The catch: Requires a high-spec computer workstation and relies on your own software savvy for treatment setup if you aren't using a specific lab partner.
• • Shining 3D Aoralscan Elite / Aoralscan 3 Wireless
  • Best For: Budget-conscious practices expanding their digital footprint without losing performance.
  • Why it shines: Highly competitive pricing (around $12,000 to $13,000 for standard wireless setups), open architecture export, fast scanning times, and great user community support. The Elite line even ventures into advanced multi-use territory with integrated photogrammetry.
  • The catch: Software isn't quite as polished for pure orthodontic patient simulation as iTero or 3Shape.

To help narrow down which system fits your clinic best, tell me:

• Are you primarily submitting to Invisalign , using outsourced open labs , or printing aligners in-house?
• Do you prefer a subscription-free open model (like Medit) or an all-in-one branded ecosystem (like iTero)?

For an orthodontic practice focused on digital models for clear aligners, the "best" scanner depends on whether your priority is Invisalign integration, open workflow, or value. Current evidence suggests that several premium scanners deliver clinically excellent accuracy for aligner workflows, with workflow and software ecosystem often being the deciding factors rather than raw scan accuracy alone.

My top recommendations are:

1. iTero Element / Lumina (Best for Invisalign practices)

Best if: Most of your cases are Invisalign.

Pros

• Native Invisalign integration
• Outcome Simulator and Progress Assessment
• Excellent orthodontic workflow
• Very reliable full-arch scanning
• Strong patient communication tools

Cons

• Higher purchase price
• Ongoing subscription costs
• Less open than competing ecosystems

If your practice is primarily Invisalign-based, it's difficult to beat the efficiency of the iTero workflow despite its higher total cost of ownership.

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2. 3Shape TRIOS 5 (Best overall scanner)

Best if: You want one scanner for orthodontics, restorative, and implants.

Pros

• Outstanding accuracy
• Fast scanning
• Excellent ergonomics
• Open STL workflow
• Integrates with many aligner manufacturers and labs

Cons

• Premium pricing
• Some advanced integrations require additional software

TRIOS has long been regarded as one of the most versatile premium scanners, with excellent accuracy and an open digital ecosystem. Independent studies consistently place it among the most accurate systems for orthodontic applications.

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3. Medit i900 (Best value)

Best if: You want premium performance without premium ongoing costs.

Pros

• Excellent scan quality
• Open STL/PLY/OBJ exports
• No mandatory subscription
• Lightweight scanner
• Strong AI-assisted scanning software

Cons

• Not as tightly integrated with Invisalign as iTero
• Some manufacturer-specific workflows require additional steps

For practices producing in-house models or working with multiple aligner systems, the Medit platform offers one of the best performance-to-cost ratios.

Quick comparison

If I were equipping a new orthodontic office

• 100% Invisalign practice: iTero
• Mixed orthodontics + restorative: TRIOS 5
• Independent aligner production or multiple aligner brands: Medit i900

One important point is that modern flagship scanners have reached a level where clinical accuracy differences are generally small for clear aligner treatment. Recent comparative studies found scanners such as Primescan, TRIOS, and iTero all produced clinically acceptable digital models, with workflow efficiency and software ecosystem often having a greater impact on day-to-day practice than tiny differences in trueness.

If you're planning to print your own aligner models in-house (using systems like SprintRay, Formlabs, or Asiga), I'd lean toward TRIOS 5 or Medit i900 because of their open-file workflows. If you're primarily submitting cases to Invisalign, iTero remains the most streamlined option.

When evaluating the best 3D intraoral scanner (IOS) for an orthodontic workflow focused on clear aligners, the "best" choice heavily depends on whether your practice is tied to a specific aligner ecosystem (like Invisalign) or if you prefer an open workflow for in-house 3D printing or independent labs.

The top-performing intraoral scanners for clear aligners break down by practice workflow and priorities:

1. iTero Lumina / iTero Element 5D Plus (Align Technology)
   • Best For: High-volume Invisalign practices.
   • Why it shines: It is the undisputed gold standard for native integration with Align's ecosystem. The iTero Lumina features a significantly wider field of view, blazing-fast scan speeds, and high-accuracy 3D visualization that streamlines ClinCheck submissions instantly. It also includes powerful patient-facing outcome simulators that massively drive case acceptance.
   • The Catch: It is a high-investment premium system, and open-format file exporting can involve restrictive workflows or added fees depending on your setup. [1][2][3][4][5][6] 3Shape TRIOS 5 / TRIOS 6 Wireless
   • Best For: Fully digital, open-architecture orthodontic practices.
   • Why it shines: Renowned for exceptional color accuracy, high-resolution mesh detail, and smart-heat anti-fog technology. The TRIOS software ecosystem integrates seamlessly with almost any third-party lab software or in-house indirect bonding and clear aligner design software (like uLab or Exocad). It is completely open, meaning your files go wherever you want without friction.
   • The Catch: Premium pricing and ongoing subscription structures apply.
2. Medit i900 / Medit i700 Wireless
   • Best For: Best overall value and in-house 3D printing workflows.
   • Why it shines: Medit has captured massive market share by offering top-tier full-arch accuracy, a lightweight ergonomic wand, completely open file export (.stl, .obj, .ply ), and no mandatory software subscription fees . If you plan to export your scans directly into slicing software to 3D-print your own aligner models in-office, the Medit series offers an unmatched return on investment.
   • The Catch: Lacks the proprietary chairside marketing/simulation suites built into ecosystems like iTero's Invisalign portal.
3. Shining 3D Aoralscan Elite / Aoralscan ELF
   • Best For: Budget-conscious clinics or mixed practices expanding into digital.
   • Why it shines: Offers impressive accuracy, AI-enhanced processing, and an accessible price point compared to the tier-one heavyweights. It outputs fully open formats (.stl, .obj ) and handles full-arch orthodontic capture capably without high running costs.

To help narrow down which system fits your operatory, tell me:

• Are you primarily submitting cases to Invisalign , or are you designing and 3D-printing aligners in-house?
• Do you have a strict preference for a wireless vs. wired wand?

If your primary goal is creating highly accurate digital models for clear aligners, there isn't a single best scanner for every orthodontic practice. The right choice depends on whether you prioritize aligner ecosystem integration, open workflow, or overall value.

Based on the current evidence and what many orthodontic practices use, I'd rank them like this:

1. 3Shape TRIOS 5 (Best overall for orthodontists)

Best for: Open workflow, multiple aligner systems, digital practice.

Pros

• Excellent accuracy for full-arch orthodontic scans.
• Very fast scanning with minimal rescans.
• Exports open STL, PLY, and DCM files.
• Compatible with nearly every aligner manufacturer (Spark, Angel Aligner, SureSmile, uLab, ClearCorrect, in-house workflows).
• Excellent AI-assisted scan cleanup.

Cons

• Premium price.
• Annual software/service costs depending on package.

This is probably the scanner I'd recommend if you're building a modern orthodontic practice that isn't tied to a single aligner company.

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2. Primescan 2 (Best scan accuracy)

Best for: Maximum scan fidelity and digital dentistry.

Pros

• Frequently ranks among the most accurate scanners in independent studies.
• Outstanding capture of occlusion and fine anatomy.
• Excellent for appliances, indirect bonding, and aligners.

Cons

• Larger scanner head than some competitors.
• More expensive ecosystem.
• Software is geared more toward comprehensive dentistry than orthodontics.

Recent comparative studies consistently place Primescan among the most accurate intraoral scanners, with TRIOS and iTero close behind for orthodontic applications.

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3. iTero Lumina / Element 5D Plus (Best for Invisalign practices)

Best for: Heavy Invisalign users.

Pros

• Native Invisalign integration.
• Outcome Simulator.
• Progress Assessment.
• Very familiar workflow for orthodontists.

Cons

• Closed ecosystem.
• Less flexible if you want to use multiple aligner manufacturers.
• Higher long-term ownership costs due to subscriptions and consumables.

If your practice is 80–100% Invisalign, this is difficult to beat from a workflow perspective, even though raw scan accuracy is similar to other flagship scanners.

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4. Medit i900 (Best value)

Best for: Cost-conscious practices.

Pros

• Excellent accuracy.
• Open STL workflow.
• No mandatory subscription in many configurations.
• Lightweight scanner.
• Excellent software updates.

Cons

• Fewer orthodontic-specific tools than iTero.
• Smaller ecosystem than TRIOS.

For practices planning to fabricate in-house aligners or work with multiple labs, Medit offers one of the strongest price-to-performance ratios.

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Accuracy for aligners

Current evidence suggests that the major flagship scanners (TRIOS, Primescan, iTero, Medit) all produce scans that are clinically acceptable for clear aligner fabrication. Differences in operator technique and scanning protocol often have a greater impact than the scanner itself. Systematic reviews conclude that modern intraoral scanners provide sufficient accuracy, excellent reproducibility, faster workflows, and improved patient comfort compared with conventional impressions.

My recommendations by practice type

If I were opening a new orthodontic office today

1. TRIOS 5 — best balance of accuracy, speed, open workflow, and future flexibility.
2. Medit i900 — if minimizing ongoing costs is a priority.
3. iTero Lumina — if Invisalign will be the core of the practice.
4. Primescan 2 — if you also perform a significant amount of restorative dentistry and want top-tier scan fidelity.

If you're also planning to print your own models and fabricate clear aligners in-house (e.g., with uLab, Graphy, or Maestro 3D), I can also recommend the best scanner–printer–resin combinations for a complete digital orthodontic workflow.

Based on the latest industry data and orthodontic workflows as of mid-2026, the best intraoral scanner depends on whether you prioritize Invisalign integration, overall accuracy, or in-house aligner fabrication.

The top contenders for creating digital models for clear aligners include:

• Best Overall for Ortho & Invisalign: iTero Lumina is considered the default for ortho-heavy offices, offering seamless Invisalign integration, excellent full-arch capture, and advanced TimeLapse tracking.
• Best Premium/All-Rounder: 3Shape TRIOS 5 is favored for its high accuracy, AI-powered scanning, and superior software ecosystem, making it excellent for both in-house and third-party aligner workflows.
• Best Value for In-House Aligners: Medit i900 is noted for its high accuracy, light weight, and open system (no subscription fees), making it ideal for creating digital models for in-house printing.
• Best Budget/Entry-Level Option: Shining 3D Aoralscan 3 Wireless or the ELF series ($12,000–$13,000) are solid, cost-effective options with fast, open-system scanning, well-suited for high-efficiency digital workflows.

Key Considerations for Orthodontists:

• Arch Accuracy: High accuracy in full-arch scans is essential for aligner fit.
• Software Ecosystem: Look for software that includes orthodontic simulations for better patient case acceptance.
• Workflow: Consider if you need a "closed" system (direct to Invisalign) or an "open" system that exports STL/OBJ files for in-house printing or other aligner providers.

To help narrow down the best choice for you, are you looking primarily for Invisalign integration, high-speed in-house aligner fabrication , or the lowest total cost of ownership?