The Form 4B Ecosystem
Complete Your 3D Printing Experience
A Side-by-side Comparison
Formlabs Form 4B vs. Phrozen Sonic CS+
See why the Formlabs Form 4B is the leading 3D printing solution for dental labs, practices, and orthodontics.
Formlabs Form 4B
Complete Cost
$9,227
The $7,469 starting price includes all the essential tools required to start printing, software, plus one year of Dental Service Plan. The Form 4B Complete Package for $9,227 adds automated post-processing tools for a turnkey solution. Buy from Formlabs via sales or the online store, or purchase through one of our distribution partners.
Technology
Print Technology
MSLA
Low Force Display™ (LFD)
A new generation of stereolithography (SLA) 3D printing where reduced peel forces lead to incredible surface finish and unmatched accuracy.
Print Speed
11 models in 9 minutes
3D print 11 clear aligner models in 9 minutes achieving a throughput of 49 seconds per model thanks to the blazing fast print speed of up to 100 mm/h.
Read this article for a full list of print speed by indication.
Productivity
More than 2x larger build surface for higher productivity
Print up to 11 clear aligner models or 8 splints in one build thanks to the 2.5x larger 20 x 12.5 x 21 cm build volume.
Supported Dental Applications & Materials
15+ validated indications
A wide range of indications on a single printer, validated, tested, and directly supported by Formlabs.
Open System
Open material mode available enabling third-party resins.
Reliability
99% print success rate
Form 4B was measured to have a 98.7% print success rate by an independent global leader in product testing. Read a complete description of the test methodology and see the results in our white paper.
A new Release Texture and a durable Flexible Film Resin Tank minimize peel forces during printing. Plus, the built-in Resin Level Sensor and Z-Axis Force Sensor ensure consistency and performance.
In the event of an issue, error messages display QR codes that lead to support articles to get you back up and running as quickly as possible.
Restorative Model Surface Accuracy
Accurate, repeatable prints with a smooth surface finish
The 50 μm XY resolution with pre-tuned anti-aliasing for subpixel resolution results in superior fine and sharp feature performance, and helps deliver an unrivaled accuracy of final parts.
On average, Form 4B and Precision Model Resin produce dental models with:
- 99.7% of surfaces within 100 μm of CAD model**
- 95% of surfaces within 50 μm of CAD model**
- 69% of surfaces within 25 μm of CAD model**
** Using Precision Model Resin and 50 µm layer height. Tested using a full arch restorative model with dies. Four models were printed per print job on three different printers and post-processed according to the recommended settings.
Wavelength Light
405 nm
Ease of Use
Resin Dispensing
Automatic Resin Handling
- No Mess: Automatic resin dispensing eliminates the need for manual intervention, resulting in reliable prints and a clean workspace.
- Streamlined Workflow: Resin level sensing and automatic resin dispensing ensure optimal resin levels are maintained with 3x fewer interactions.
- Reliable: Consistent, precise, and automated resin dispensing for reliable completion of prints.
Part Removal
Quick, easy, and tool-free with Flex Build Platform
Prevents part breakage and potential injuries while removing parts.
Resin Identification
Automated resin identification when a cartridge is inserted
Post-Processing
Automated
Resin Mixing
Automated, with debris detection
Monitoring
Integrated camera for remote monitoring and traceability
Cost of Ownership
Resin
$79/L
Fast Model Resin for dental models costs $79/L in cartridges, $65/L in 5L containers, and prices can go as low as $35 for bulk orders. Resins for all other applications are also comparable or more cost-effective.
Resin Tanks
$99
Service
$1,499
Service and warranty include superior benefits, such as personalized onboarding, phone and email support, and hot swap expedited replacement in the event your printer needs service.
Light Processing Unit
$535
Lifetime details: 600k - 1.9M layers, depending on material and layer height.*
*For example, approximately 5,000 prints using diagnostic models (22 mm tall), Grey Resin V5, and 100 µm layer height.
Phrozen Sonic CS+
Complete Cost
$7,237
The $7,237 cost includes the printer, WASH+, CURE+, and the Heat & Mix: Resin Mixing Station. A service plan is not available for the printer.
Technology
Print Technology
MSLA
Optical Panel™ Technology
The Phrozen Sonic CS+ uses an LCD with a high UV transmittance polarizer film.
Print Speed
N/A
Phrozen claims a theoretical maximum of 100 mm/h, but provides no information on actual print times for different indications.
Productivity
Smaller build surface, smaller batches, more manual labor
The smaller 16.5 x 7.1 cm size of even the largest Phrozen Sonic CS+ Standard Kit build platform means that only seven clear aligner models can be printed in one build, resulting in lower throughput and requiring more printer interactions.
Supported Dental Applications & Materials
3+ indications
Limited indications (dental models, gingiva, and ortho models) are currently available as of September 2025.
Open System
Reliability
N/A
There is no data on reliability.
Surface Accuracy
N/A
Printer settings restrict restorative models to a 50-100 μm layer height, while Form 4B can print restorative models at a 25 μm layer height for precise details.
According to Phrozen Dental, Sonic CS+ can produce dental models with:
- 95% of data points within 50 μm of CAD model; resin and settings not indicated.
Wavelength Light
385 nm
Ease of Use
Resin Dispensing
Manual
- Additional Costs: Separate machine, the Phrozen Heat & Mix, is required for heating and mixing resin prior to printing.
- Longer Workflow: Resins are preheated and mixed for an additional 15-45 minutes before printing.
- Additional Workflow Steps: Requires manual monitoring and adjustment of resin levels, adding time and effort to the printing process.
- Messy and Inconvenient: Manual resin dispensing can be messy, with a higher risk of spills.
Part Removal
Manual one-at-a-time part removal with tools
Risk of part breakage or injury while removing parts.
Resin Identification
Manual
Post-Processing
Automated
Resin Mixing
Manual mixing is required periodically, no debris detection
Monitoring
Integrated camera for remote monitoring and traceability
Cost of Ownership
Resin
$158/kg
Phrozen Dental Ortho Model Resin - Gray starts at $158/kg.
Resin Tanks
No information available as of September 2025.
Service
Not Available
No service plans are available. Limited self-help and email service is available. Select parts of the printer have a one-year warranty, but no hot-swaps.
Light Processing Unit
N/A
Lifetime details: 600K – 1.5M layers
Do you have more questions about the differences between these solutions?
WebinarWatch the Webinar Now
Form 4B: Product Demo
Join Formlabs Product Managers Georgio Haddad and Kerry Xie for an immersive webinar that will introduce you to the comprehensive Form 4B ecosystem, including a hands-on demo of the new products.
Meet Form 4B
Unprecedented print speeds. Print 11 dental models in 9 minutes.
9m
Form 4B44m
Benchmark DLP*1h16m
Benchmark LCD*1h32m
Form 3B+*11 Clear Aligner Models at 160 μm
49m
Form 4B2h18m
Benchmark DLP*3h30m
Benchmark LCD*9h30m
Form 3B+*8 Occlusal Splints at 100 μm
1h50m
Form 4B2h42m
Benchmark DLP*3h6m
Benchmark LCD*8h50m
Form 3B+*10 Restorative Models at 50 μm
48m
Form 4B1h48m
Benchmark DLP*2h38m
Benchmark LCD*7h12m
Form 3B+*12 Surgical Guides at 100 μm
37m
Form 4B1h46m
Benchmark DLP*3h42m
Benchmark LCD*5h37m
Form 3B+*9 All-on-X at 100 μm
25m
Form 4B44m
Benchmark DLP*54m
Benchmark LCD*1h13m
Form 3B+*5 Restorations at 100 μm
Unrivaled accuracy that matches your commitment to a perfect fit, every time.
Request a Free Sample 3D Print
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3D Printer Buyer’s Guide for Dental Practices
If you are managing a dental practice, look no further—this is your ultimate guide to digital dentistry.
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With 75+ support and service staff and 150+ engineers, Formlabs backs its products with the strongest team in 3D printing.
