Dental 3D printers have helped the dental industry create complex, custom dental prosthetics and appliances in a highly accurate and repeatable process.
Many industries have benefited from advances in 3D printing technology, with the dental industry being one of the most prominent use cases for 3D printing. The ability to manufacture precise implants, bridges, crowns, and other orthodontic devices has improved workflow efficiency for dental labs so they can respond to the rising demand.
This guide will explore the various 3D printing technologies ideal for printing dental parts and the best dental 3D printers on the market.
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How are dental parts 3D printed?
When 3D printing dental parts, the process typically begins with creating a 3D digital model using specialized Computer-aided designs (CAD) software.
The CAD software obtains data from scans or impressions of patients, which are then used to create a 3D digital model of the dental part. This is then sent to a 3D slicer which converts the 3D model into a format a dental 3D printer can understand. The 3D printer builds the object layer by layer, each fused or cured, depending on the specific technology used.
Sometimes, the printed part may require post-processing, such as polishing and finishing, to get the desired finish. Once the part is complete, the patient receives a perfectly fitting dental device, such as crowns, bridges, and implants.
3D Printing Technology for Dental Applications
Some of the most common technologies used for 3D printing dental parts include:
Stereolithography (SLA)
Stereolithography is a 3D printing technology that uses a laser to cure photosensitive materials layer by layer to create solid parts. This resin 3D process is ideal for creating precise, highly-detailed prototypes requiring watertight tolerances and smooth surfaces like molds, guides, and trays.
Digital Light Processing (DLP)
Digital Light Processing (DLP) is another generation of SLA 3D printing that uses liquid resin and projector or an LCD screen. The projector flashes an image of an entire cross-section of the object that is cured when exposed to ultraviolet light.
DLP 3D printing technology works well for printing dental parts because it also produces highly detailed and accurate parts with smooth surface finish. DLP technology works faster than traditional Stereolithography technology because it uses light to harden the entire layer rather than line by line.
However, Digital Light Processing does not accurately solve the classic speed vs. quality issues existing in the predecessor SLA 3D printers. Another potential challenge with DLP is that its single projection source means that the image can become distorted, which can lead to uneven build quality.
mSLA
Nexa3D’s LSPc ® technology
mSLA, or Masked Stereolithography, is a later generation of stereolithography that uses an LED array light source instead of a laser or a single projection point. The LED array projects light through an LCD panel which masks certain pixels while printing so curing occurs only in the unmasked section.
mSLA is one of the fastest 3D printing technologies that can also maintain print quality for even the most intricate geometries. However, Nexa3D’s proprietary version of mSLA technology–Lubricant Sublayer Photo-curing or LSPc®–goes a step further. This technology combines a UV light array and LSPc® Optical lens layer to ensure light uniformity in this process, which is essential for optimal use of LSPc® High Contrast Mask.
The LSPc® HC Mask is in charge of projecting 3D image slices onto the vat, where the photopolymerization process takes place layer by layer. This provides the fastest printer on the market with the largest build area in its class without sacrificing image quality: you get high edge-to-edge performance with no distortion, in contrast to DLP 3D printers.
Nexa3D’s LSPc® technology also utilizes a patented lubricated sublayer called the Everlast 2 membrane. This membrane significantly reduces the “peel force” imposed as each layer is lifted off of the base of the 3D printer vat–allowing for significantly faster print jobs and more complex geometries with fewer supports.
Best Dental 3D Printers
1. Nexa3D NXD 200Pro
Nexa3D’s NXD 200Pro is an industrial-grade resin dental 3D printer that prints large, high-resolution parts including dental resin models, splints, impression trays, and occlusal night guards. It uses patented LSPc® (Lubricated Sublayer Photocuring) technology that uses a self-lubricated membrane that eliminates forces between parts during printing, enabling faster print speed without sacrificing the print quality or surface finish. This enables an ultrafast print speed up to five times faster than traditional resin 3D printers.
The NXD 200Pro comes with an unparalleled 8.5L build volume measuring 275 x 155 x 200 mm and a large build plate that can create up to 20 flat 3D-printed dental models in less than 30 minutes. It also has an open material platform that supports various resin materials and a dual Linear Motor system for consistent accuracy.
Pros:
- Speed: Prints 20 dental models in 30 minutes
- Scalable, cost-effective solution compared to other dental 3D printers.
- Large 8.5L build volume.
- It uses patented mSLA technology, an advanced 3D printing technology.
- Wide variety of dental resins available
- Intuitive interfaces and easy to use.
Cons:
- Typically not an entry level price point for smaller dental labs
Request a sample part from the NXD 200Pro.
2. Nexa3D XiP
The Nexa3D XiP is a great option for dental professionals seeking an affordable and user-friendly desktop 3D printer. The XiP also uses LSPc® technology to achieve ultra-fast printing speeds. It combines a compact footprint with a 4.8L print volume to deliver high-quality prototypes on your desktop.
The XiP offers a broad range of already validated rigid and elastomeric materials, as well as a fully open material platform providing ultimate flexibility and access to the materials you need, when you need them.
For dental professionals looking for high-precision capabilities in a desktop size, the XiP is a perfect solution.
Pros:
- Speed: Print 10 dental models in 30 minutes
- Large 4.8L build volume
- Easily upgradeable and easy to operate.
- Affordable and user-friendly.
- Open material platform (allowing third-party resins).
- Open material platform (allowing third-party resins).
- Wide variety of dental resins available
Cons:
- Its build volume is smaller than the NXD.
Request a free XiP sample part.
3. Form 3B+
Formlabs Form 3B+ is a professional 3D printer that uses Low Force Stereolithography (LFS)™ technology. This device has a build volume of 145 × 145 × 185 mm and supports biocompatible materials, making it suitable for dental 3D printing. Form 3B+ has a physical dimension of 405 × 375 × 530 mm and weighs 17.5 kg.
Pros:
- Form 3B+ uses SLA 3D printing technology.
- Offers good print quality and an optimized workflow.
- Relatively affordable.
Cons:
- It has a 483-minute build time, which is slower than other leading 3D printers.
- It has a closed platform that requires Formlabs branded resin.
- Form 3B+ has a relatively small build volume of 3.8 liters.
Also Read: Form 3B+ vs Nexa3D XiP
4. Stratasys J700 Dental
Stratasys J700 Dental is a dental 3D printer that uses material jetting (UV-cured) technology to produce thermoset parts using resin feedstock. This device measures 490 x 390 mm (19.3 x 15.35 in.), weighs 430 kg, and has an automated workflow for managing the additive manufacturing process from start to end. The printer also has GrabCAD management software.
Pros:
- 490 × 390 × 200 mm build volume.
- Supports various dual materials (such as rigid and soft materials) for printing dental parts.
- Has an automated load/unload function to produce various models.
Cons:
- Expensive compared to other 3D printers.
- Unsuitable for smaller projects.
- Build time can be slower than other 3D printers.
5. Carbon M2
The Carbon M2 is a professional dental 3D printer that uses Digital Light Synthesis (DLS) technology to produce parts. The printer has a build volume of 189 x 118 x 326 mm and physical dimensions of 540 x 654 x 1734 mm. It supports various materials, such as dental PS, PA11, and other resins.
Pros:
- It comes with an automated print setup, which simplifies the entire printing process.
- It has a faster print speed.
Cons:
- The Carbon M2 has a relatively small build volume compared to other 3D printers.
- It is also more expensive than most dental 3D printers.
6. 3D Systems NextDent 5100
The 3D Systems NextDent 5100 is an industrial dental 3D printer that uses material jetting (inkjet) technology for the production of dental appliances and sacrificial castings. The printer runs on the Figure 4® technology and has a build volume of 124.8 x 70.2 x 196 mm.
NextDent’s 3D printing materials are biocompatible and CE certified in accordance with Medical Device Directive 93/42/EEC, listed at FDA, and registered in various other countries.
Pros:
- It has a fast print speed.
- The printer has an enclosed system that is dust-free for printing precision parts.
Cons:
- It’s unsuitable for larger projects due to its small build volume.
- It has a closed material platform and accommodates only NextDent 3D printing materials.
7. Kulzer Cara Print 4.0
The Kulzer Cara Print 4.0 is a professional dental 3D printer that uses Direct Light Processing (DLP) technology to produce parts. The printer has a build volume of 103 x 58 x 130 mm and supports various dental materials, such as zirconium dioxide and gypsum. The 3D printer has an average print speed and uses a cara Print CAM 2.0.
Pros:
- Kulzer Cara Print 4.0 is lightweight, weighing about 21 kg.
- It is user-friendly and easy to operate.
Cons:
- The Kulzer Cara Print 4.0 is expensive compared to other dental 3D printers on the market.
- It uses DLP printing technology, which is not as advanced as mSLA 3D printing.
8. Rapid Shape D100
Rapid Shape D100 is an industrial dental 3D printer that uses Direct Light Processing (DLP) technology to produce parts. The device has a build volume of 338 x 190 x 80 mm and supports various materials, such as nylon, PMMA, PEKK, and PEEK. The D100 also comes with in-built software for controlling the entire printing process.
Pros:
- The Rapid Shape D100 has a large build volume, which is ideal for printing large parts.
- It supports multiple materials and allows users to customize their prints.
Cons:
- The Rapid Shape D100 is expensive compared to other 3D printers.
- It has a relatively slow print speed.
- It also uses DLP printing technology.
How to choose the best dental 3D printer
Choosing the best 3D printer for printing dental parts depends on various factors, such as budget, print speed, and materials compatibility.
3D Technology
The most common 3D printing technologies used are Masked Stereolithography, Material Jetting, and Digital Light Processing (DLP). Each of these technologies can result in different dental end-products.
Nexa3D’s resin 3D printers use a proprietary version of mSLA technology called Lubricant Sublayer Photocuring (LSPc®), which combines the LSPc Optical lens layer and a UV light array to ensure light uniformity. This makes it perfect for a broader range of industries, including dentistry, manufacturing, automotive, and jewelry.
Accuracy and precision
With the right 3D printer, users can print parts with high accuracy. Professional dental 3D printers that use mSLA or material jetting technologies are often more accurate than those that use other technologies, such as FDM or DLP.
Ease of use
A user-friendly 3D printer means engineers can quickly understand the device and ramp up production. Look for a 3D printer with an intuitive interface, clear instructions, helpful tutorials, and a great customer service team.
Throughput and speed
The fastest 3D printers can help reduce the time it takes to print dental parts, resulting in a quicker time to market and greater dental workflow efficiency . For example, Key Dental Technologies can print 20 Ortho Models in 30 minutes thanks to the NXD 200Pro.
Material requirements
Different 3D printers support different material types–and some only allow for their branded materials. Look for a 3D printer that has an open material platform and is compatible with a range of materials, such as xMODEL 2505, KeyOrtho IBT, and KeySplint Soft®.
Cost and ROI
It’s important to consider the return on investment of a 3D printer and its consumables to ensure it offers a good long-term value. If you’re investing too much on the initial purchase, it is more advisable to switch to more cost-effective options.
For example, Excel Orthodontic Lab switched from the Carbon M2 printers to the more cost-effective NXD 200 printer. Carbon does not sell its 3D printers but rather leases them for 3 years at a minimum of $150,000–upon which time the customer must return the hardware or start a new lease.
Tyler Dowdle, Founding Manager of Excel Orthodontics, explained it this way: “With one NXD 200Pro, we’re replacing two Carbon 3D printers, and in my mind we could probably even replace the third one once we optimize our process – we’re still just getting started.”
Use the best dental 3D printer
Nexa3D offers an array of advanced 3D printers that are ideal for printing various parts and cuts across several industries. In addition to offering excellent accuracy and precision, these 3D printers have an intuitive interface, a wide range of compatible materials, and high throughput.
Designed specifically for the dental industry, the NXD 200Pro offers world-class dental model manufacturing capabilities at ultrafast speeds with validated Keystone performance dental resins. With an unprecedented 8.5L build volume measuring 275 x 155 x 200 mm and patented LSPc technology, this dental 3D printer is ideal for making dental resin models, splints, impression trays, occlusal night guards, and more.
With Nexa3D’s advanced technology, dental labs can now produce professional-grade models at a fraction of the time and cost of other 3D printers.
