La 3D printing in medicine and dentistry In just a few years, it has gone from being a technological curiosity to becoming an everyday tool for clinics, hospitals, and laboratories. We're no longer just talking about mock-ups or prototypes: today, splints, surgical models, custom prostheses, implant guides, and even biocompatible materials specifically designed to remain in the mouth or body for extended periods are being printed.
This revolution is especially noticeable in the digital dentistry and in medical specialties that require high anatomical precisionThanks to additive manufacturing, it's possible to go from a digital scan to a physical part in a matter of hours, with millimeter accuracy and a level of customization that traditional methods can't match. Furthermore, the process is more efficient, shortens lead times, reduces costs, and significantly improves the patient experience.
What is 3D printing in medicine and dentistry?
When we talk about 3D printing applied to healthcare We're referring to an additive manufacturing process that builds an object layer by layer from a digital file. Instead of carving, milling, or casting material, the printer adds small layers until the final shape is achieved. In the medical and dental fields, this object is often a completely customized piece, tailored to the patient's anatomy.
In dentistry, the 3D printing allows the creation of restorations, splints, aligners, models, and surgical guides. Custom-made, with very fine adjustment and total control over shapes, thicknesses, and occlusal contacts. In medicine, it is used to manufacture realistic anatomical models, surgical guides, external prostheses, orthopedic devices, and surgical planning tools that help the medical team prepare for complex procedures with much greater confidence.
Compared to traditional methods based on physical impressions, plaster casts, and manual processing3D printing fits into a completely digital workflow: scanning, computer-aided design (CAD), and direct manufacturing. This technological leap has transformed personalization from the exception into the norm.
Another key advantage is that the 3D printing democratizes access to in-house manufacturingWhat previously required large laboratory infrastructures can now be resolved with desktop printers and specific materials, within a dental clinic or in a hospital service, maintaining control over time, costs and quality.
From digital scanning to physical object: the workflow
It all starts with the precise digitization of patient anatomyIn dentistry, intraoral scanners are used to capture teeth, gums, and adjacent structures with a very high level of detail. In medicine, the information usually comes from CT scans, MRIs, or 3D scanners that capture the bone structure and soft tissues of the area to be treated.
This data is converted into a digital file, usually in STL format or another compatible standard, which is imported into a CAD software specifically designed for medical or dental applicationsIn this phase, the piece is designed: an occlusal splint, a surgical guide, an anatomical model, a provisional prosthesis, or any other device necessary for the treatment.
Once the design is finished, it moves on to print preparation programWhere The object is oriented, supports are added, and the printing parameters are defined. (layer height, material type, exposure times, etc.). The software then generates the file that the 3D printer will understand to cure the resin or deposit the material layer by layer.
The next step takes place in the machine, where the A 3D printer physically builds the model layer by layer.In the dental sector, photopolymerizable resins that solidify with ultraviolet light are mainly used, although in medicine other materials such as engineering plastics, metals or biocompatible compounds are also used depending on the application; and procedures such as the 3D printing of bone directly in the operating room.
After printing come the phases of Post-processing: washing, final curing and, if applicable, polishing or finishingIn dentistry, these steps are critical to ensure biocompatibility, dimensional stability, and the application of a quality control in 3D printing of the proper mechanical behavior of splints, aligners or printed prostheses.
Most commonly used 3D printing technologies in the healthcare sector
In dentistry and in many medical applications, technologies based primarily on photopolymerization of liquid resinsdue to their combination of high precision, good speed, and excellent surface quality. The three most common are SLA, DLP, and LCD.
La SLA (stereolithography) It uses a laser that scans the surface of a vat of light-cured resin, solidifying it point by point and layer by layer. This technique offers a high level of detail, ideal for dental models, temporary veneers, or complex structures. However, it is usually somewhat slower than other projection-based technologies.
La DLP (Digital Light Processing) It works in a very similar way, but instead of a laser, it uses a light projector that solidifies an entire layer of resin in one step. This allows shorter printing times, especially useful when you want to produce several pieces at once, for example numerous study models or several splints on the same tray.
Technology LCD It has become extremely popular in the dental sector thanks to its balance between cost, speed, and resolution. In this case, an LCD screen allows ultraviolet light to pass through, following the pattern of each layer, curing the resin only in the intended areas. This technique integrates very well into compact desktop printers such as those used in many modern dental clinics and laboratories.
Although other technologies are also used in medicine, such as selective laser metal melting, filament extrusion (FDM) printing or powder sinteringFor daily dental practice, light-cured resins continue to be the main protagonists due to their precision and versatility.
Applications of 3D printing in dentistry
Dentistry has been one of the fields that has most benefited from the revolution in patient-oriented additive manufacturingThe list of applications grows every year, but there are some key uses that are already fully established in the day-to-day operations of clinics and laboratories.
One of the most widespread applications is the creation of printed digital dental modelsAfter scanning the mouth, the dentist or dental technician can obtain accurate models of the dental arch in a very short time, without needing to store plaster casts or relying on setting times. These models are used for diagnosis, treatment planning, occlusion testing, or presenting cases to the patient.
surgical guides for implantology These are another major advancement. Using a CT scan and the virtual design of the implants, custom guides are printed that fit the patient's teeth or bone and precisely mark the location, angle, and depth of each drill hole. This results in much more predictable, safe, and faster surgeries.
In orthodontics, 3D printing is used both for the manufacture of transparent aligners as well as for the production of models for each stage of treatmentThe professional can print the complete sequence of models and, on them, thermoform the necessary aligners or splints, significantly shortening delivery times and better adjusting the planned tooth movement.
Workflows have also changed completely for provisional prostheses and some definitive restorationsCrowns, bridges, denture bases, and temporary structures can be printed from CAD designs, allowing for aesthetic and functional trials in a very short time. In many cases, the patient leaves the office with a fully fitted temporary solution on the same day.
The impression of occlusal splints, night guards, and bite guards This technology has also benefited. Thanks to digital design and 3D printing, splints with an excellent fit are obtained; they are less bulky and more comfortable for the patient, which usually improves adherence to treatment.
Revolution in dental laboratories and in-house production
Until a few years ago, many dental laboratories had to outsource part of its manufacturing processesespecially when it came to complex productions or large volumes. This meant longer shipping times, waiting periods, and a reduced capacity to react to changes or adjustments requested by the clinics.
With the arrival of the Desktop 3D printers designed specifically for dental useThe situation has completely changed. Today, it's possible to integrate the entire digital workflow within the lab itself: receiving scanned files, CAD design, and on-site manufacturing. This drastically reduces lead times and significantly improves responsiveness.
Domestic production not only reduces waiting times, but also promotes a more efficient cost management and quality controlTechnicians can decide which materials to use in each case, repeat a piece if it doesn't fit perfectly, or adjust designs almost in real time, without depending on third parties or external shipments.
In addition, many dentists have begun to incorporate 3D printers directly in their own clinicsThis allows them to manufacture models, splints, or temporary devices without sending anything out, offering immediate solutions to their patients. For example, a model and a splint can be printed in a matter of hours, avoiding second appointments or unnecessary waiting.
This transformation goes hand in hand with the implementation of the so-called Complete digital dentistrywhere the intraoral scanner, design software, 3D printer and, where applicable, milling systems, form an integrated ecosystem that greatly streamlines the entire work process.
Biocompatible materials and advances in dental resins
The development of 3D printing applied to healthcare has also driven a veritable explosion of biocompatible materials specifically designed for medical and dental useIn dentistry, light-cured resins have become increasingly sophisticated, offering mechanical, aesthetic, and stability properties far superior to those of the first generations.
Today we can find resins designed for diagnostic models, surgical guides, splints, aligners, long-term provisionals or definitive prosthesesEach one has formulations adapted to its function. Some mimic the translucency and color of teeth very well, while others prioritize impact resistance or controlled flexibility.
Brands specializing in the dental field, such as graphicThey have developed high-end ranges of light-cured resins to meet these needs. Their catalog includes the following: Tera Harz resins, designed for demanding applications such as splints, aligners or certain prostheses, where a balanced combination of strength, biocompatibility and color stability is required.
These advanced resins offer, among other advantages, certifications of biocompatibility, high mechanical strength and good dimensional stabilityThese are fundamental aspects when the piece is going to be subjected to chewing forces, temperature changes and constant exposure to saliva.
The range of colors, opacities, and finishes has also expanded, allowing very satisfactory aesthetic results that blend seamlessly with the patient's existing teeth. This is especially important in visible areas, where the goal is for the restoration to be completely undetectable.
High-precision dental 3D printers: Uniz SLASH 2 PLUS and Uniz NBEE
Within 3D printing solutions geared towards the dental sector, equipment focused on high precision, speed and compatibility with specialized resinsAmong them are printers such as the Uniz SLASH 2 PLUS and the Uniz NBEE, designed to integrate naturally into laboratories and clinics.
La Uniz SLASH 2 PLUS It is a 3D printer based on LCD technology that offers a highly effective combination of speed, detail, and print volume. This makes it particularly interesting for dental laboratories that need to produce models, splints, guides, and temporary restorations in large quantities, while maintaining high accuracy in detail.
Among its features are a very fine resolution for reproducing complex anatomies, a large build area for printing multiple parts at once and high compatibility with advanced dental resins, including ranges of materials specifically for splints or aligners.
Furthermore, the Uniz NBEE It is geared towards environments that require ultra-fast production without sacrificing quality. Its technology allows significantly shorten printing timesThis is especially valuable for clinics or laboratories that need to deliver splints, models, or temporary prostheses within very tight deadlines.
Integrating these devices into the digital workflow allows professionals to have a efficient and scalable internal production lineAs the demand for 3D printing-based treatments grows, having fast and reliable machines becomes a key element to differentiate oneself and offer a high-level service.
Clinical, economic and patient advantages
The adoption of 3D printing in medicine and dentistry cannot be explained solely by its technological component; what has truly driven its expansion are the clear advantages it offers to clinicians and patients In day to day.
In terms of accuracy, the leap compared to traditional methods is very evident. possibility of working with exact digital files and reproducing anatomy at real scale It makes restorations, splints or surgical guides fit better, require fewer adjustments and reduce the margin of error in interventions.
From a time perspective, the improvements are also very significant. Many devices that previously required several days or weeks for mold printing, casting, shipping, and adjustments can now be ready in a matter of hours. This makes it easier to offer faster treatments, with fewer visits to the doctor and greater comfort for the patient.
From an economic standpoint, additive manufacturing allows for a resource optimization and cost reduction in the medium termAlthough the initial investment in scanners, software, and printers can be significant, the savings in materials, transportation, and manual labor time usually offset it, in addition to opening up new possibilities for services and treatments.
For the patient, the experience also improves: Uncomfortable physical impressions are avoided, waiting times are shortened, and better-fitted devices are obtained. to their anatomy. All of this contributes to greater satisfaction and a more positive perception of the technology applied to their oral health or medical treatment.
3D printing in medical education and dental training
Beyond direct clinical applications, 3D printing has become a very valuable tool for teaching and training of healthcare professionalsIn dentistry, it allows students and residents to become familiar with complex dental anatomies using 3D printed models that faithfully replicate real-life situations.
Thanks to these models, it is possible to practice surgical procedures, tooth preparation techniques, implant placement, or instrument handling in a safe environment, with no risk to real patients. This helps to gain fluency and confidence before facing clinical cases in the consultation room.
In the medical field, printed models from CT scans or MRIs allow surgeons plan complex or infrequent interventions on exact replicas of the patient's anatomy. Cuts, plate placement, resections or reconstructions can be simulated, refining the surgical strategy before entering the operating room.
This ability to experiment with different scenarios, test alternatives, and analyze results on physical models It accelerates the learning curve and improves the quality of training.At the same time, it helps to better explain the treatments to the patients themselves, who can see and touch a representation of their specific case.
As technology becomes cheaper and digital workflows are simplified, it is foreseeable that 3D printing continues to be naturally integrated into universities, training centers, and teaching hospitals, strengthening the link between theory and clinical practice.
The combination of digital scans, advanced design software, high-precision 3D printers, and biocompatible materials is redefining how treatments are planned and performed in medicine and dentistry. Increasingly, the path is moving from scans to smiles and guided surgeries with a fluidity unimaginable just a few years ago. For clinics, laboratories, and hospital services that decide to make the leap, 3D printing is not just a technological trend, but a more efficient, precise, and personalized way to care for their patients' health.
