3D printing is now a practical tool in dental labs, medical schools, and healthcare settings for producing study models, anatomical training aids, and custom assistive devices. This guide covers the applications that consumer and prosumer printers genuinely support, the materials suited to each use case, and the regulatory considerations that every healthcare professional should understand before printing patient-contact items.
What Consumer-Grade 3D Printing Can and Cannot Do in Healthcare
It is worth being direct at the outset. Consumer and prosumer 3D printers (including the excellent resin and FDM machines available from EnviroLaser3D) are capable tools for a range of legitimate healthcare and dental applications. They are not, by themselves, classified medical devices. A printer does not carry a medical device certification: the materials, the workflow, and the quality management system around the printing process collectively determine whether a printed item meets the requirements for patient contact.
For a significant number of applications, a consumer resin or FDM printer is exactly the right tool. Study models, simulation training aids, anatomical education props, and custom prosthetic components for non-sterile, non-implantable applications do not require the same level of regulatory oversight as intra-oral devices. This guide focuses on these practical, achievable applications.
For items that directly contact patients in a clinical setting (intra-oral appliances, surgical guides, dental restorations), additional requirements apply: the resin or filament used must be biocompatible, the printer must be validated for the specific application, and the workflow must comply with relevant Health Canada regulations. Those requirements go beyond this guide and should be discussed with a qualified dental or medical device specialist.
Dental Study Models
Dental study models are among the most accessible and widely adopted consumer-grade 3D printing applications in healthcare. A study model is a replica of a patient's dentition cast from an impression or digital scan. Dental schools and orthodontic practices use them for diagnosis, treatment planning, case documentation, and student training.
Traditionally, study models were poured in dental stone from alginate impressions, a labour-intensive process that produced physically heavy models prone to chipping over time. Digital workflows now allow intra-oral scans or photogrammetry-based impressions to be processed and printed directly on a desktop resin printer.
What you need for dental study model printing:
A resin printer with sufficient XY resolution to capture fine occlusal detail. The Elegoo Mars 5 Ultra achieves 18µm XY resolution, which is more than sufficient for diagnostic study models. The Elegoo Saturn series offers a larger build plate, allowing multiple arches to be printed in a single batch. See the Elegoo resin printer range and the Elegoo brand overview for current models.
A model resin. Standard photopolymer resins produce adequate study models, though resins specifically formulated for dental models (typically offering harder, less sticky surfaces and better dimensional stability) are available from specialist dental supply companies. For dental model applications that do not involve patient contact, standard or ABS-like resin is used in many dental school environments.
Suitable software for processing scan data. Most intra-oral scanners output files in STL, OBJ, or PLY format, which are directly compatible with standard slicers. OrthoModel and dedicated dental software tools add tooth isolation and segmentation features useful for orthodontic work.
Our FDM vs resin comparison provides a detailed overview of resin printing technology for those new to the process.
Medical Education and Anatomical Training Models
Medical and allied health education relies on physical models to teach anatomy, simulate procedures, and develop clinical skills. Commercial anatomical models are expensive and often represent generic anatomy rather than the case-specific or pathological variants that are most instructive for training.
3D printing changes this. CT and MRI scan data, when converted to printable mesh files, produces patient-specific or condition-specific anatomical models that represent real clinical presentations. A neurosurgery programme can print a specific aneurysm geometry for surgical planning rehearsal. A nursing school can print cardiac anatomy with a congenital defect for paediatric case study. A physiotherapy programme can print a specific fracture pattern for assessment training.
Converting medical imaging to printable files: DICOM files from CT and MRI scans require segmentation software to isolate structures and generate printable meshes. Tools including 3D Slicer (open source), Materialise Mimics (clinical), and InVesalius (open source) handle this conversion. Segmented output is exported as STL and printed directly.
Material selection for anatomical models. Flexible materials (TPU) simulate soft tissue compliance. Rigid materials (PLA, PETG) represent bone and cartilage. Multi-material or multi-colour printing creates anatomically accurate composite models. The specialty filaments guide covers flexible and composite materials in detail.
Simulation trainers. Procedure simulation models (vascular access trainers, intubation trainers, surgical dissection aids) are a growing application area. Many of these require minimal regulatory oversight when they are purely educational props not intended to contact patients. FDM with TPU skin layers over a PETG or PLA armature produces surprisingly realistic tactile properties for injection and cannulation trainers.
Custom Prosthetics and Assistive Devices
The open-source prosthetics movement, particularly the e-NABLE network, demonstrated that FDM printers can produce functional upper-limb prosthetic components for individuals who cannot access conventional prosthetics. While industrial-grade prosthetics involve extensive clinical fitting and regulatory oversight, printed assistive devices occupy a large and growing space between medical devices and consumer products.
Applications well-suited to desktop FDM printing:
Cosmetic prosthetic covers, where aesthetics rather than load-bearing function is the primary goal. PETG and PLA provide adequate strength for these applications.
Custom orthotic insoles and splints, where PETG's combination of flexibility and toughness allows form-fitting devices. Nylon provides superior fatigue resistance for items that will flex repeatedly.
Grip aids, adaptive tools, and ergonomic device modifications for users with limited dexterity. These are non-implantable, non-sterile items that do not require medical device certification.
Communication and AAC (augmentative and alternative communication) device mounts and holders.
Material note. For any assistive device that contacts skin over extended periods, skin tolerance testing should be considered. Certain pigments and additives in standard filaments can cause contact sensitivity in some individuals. If this is a concern, non-pigmented natural PLA or medical-use PETG formulations are available.
Our engineering-grade filament guide covers Nylon properties in detail, including the moisture management requirements for reliable printing of this material.
Hearing Aid and Audiology Applications
Hearing aid shell manufacturing was one of the earliest industrial-scale applications of 3D printing in healthcare. Major hearing aid manufacturers shifted to additive manufacturing for custom shells over a decade ago because the combination of patient-specific geometry and high-volume production is exactly where 3D printing outperforms both manual and subtractive manufacturing.
Desktop resin printing can produce hearing aid shells in smaller settings: audiology clinics, research labs, and hearing instrument specialist practices. The accuracy requirements are significant (a poorly fitting shell causes discomfort and acoustic leakage), and the material must be biocompatible for items contacting ear canal skin over extended periods. Industrial and commercial hearing aid workflows use certified Class II medical resins and validated production processes.
For educational or prototype purposes, standard resin printers produce impressive shell geometry from DFINE or equivalent open-platform hearing aid design software. These applications demonstrate the workflow without producing clinical-grade devices.
Surgical Planning and Guidance Models
Surgical planning models are 3D-printed replicas of patient anatomy produced from medical imaging data, used by surgical teams to plan and rehearse complex procedures. These models are not implanted and do not contact the surgical site during the procedure: they are used pre-operatively on a bench.
For this application, a consumer resin printer with adequate resolution produces useful clinical planning models. Several published surgical case series document the use of consumer and prosumer printers for cranio-maxillofacial, orthopaedic, and cardiovascular planning models. Accuracy sufficient for planning purposes (±0.5mm) is achievable on machines such as the Elegoo Mars 5 Ultra or Saturn series.
For surgical guidance applications, where a printed guide is used intra-operatively to position a drill or osteotomy cut, regulatory considerations are more stringent. The guide is a patient-contact medical device, and both the material and the production workflow require appropriate certification. This is distinct from the planning model application.
Material Considerations for Healthcare Applications
The appropriate material depends primarily on whether the printed item will contact a patient and, if so, in what context.
Non-patient-contact applications (education models, simulation trainers, planning models). Standard PLA, PETG, and photopolymer resins are appropriate. No biocompatibility certification is required. Performance criteria focus on accuracy, surface finish, and durability for the specific use case.
Skin-contact, non-implantable applications (prosthetics, orthotics, assistive devices). Biocompatibility testing (ISO 10993-1 series) is relevant. Non-pigmented or medical-grade material formulations reduce risk. PETG and natural PLA are commonly used. Extended contact applications warrant more careful material selection.
Intra-oral contact (dental trays, aligners, short-term devices). Certified biocompatible dental resins are required. Standard photopolymer resins are not appropriate for intra-oral use. Biocompatible options include formulations certified to ISO 10993 and EN ISO 7405.
Sterile or implantable applications. Consumer and prosumer printers are not validated for sterile or implantable medical device production. Industrial-grade additive manufacturing with ISO 13485 quality management is required.
For the consumer applications covered in this guide, the EL3D filament range and Elegoo resin range provide appropriate materials. For specialist biocompatible resins, dedicated dental supply companies are the appropriate source.
Printing for Healthcare in Ottawa
EnviroLaser3D has supplied 3D printing equipment to education institutions, healthcare organisations, and research groups for nearly four decades. Our Nepean showroom carries the hardware and consumables relevant to the educational and laboratory applications covered in this guide: resin printers from Elegoo for study model and anatomical model production, FDM printers from Bambu Lab for training aids and assistive devices, and EinScan scanners for digitising physical anatomy or existing devices.
For healthcare or dental professionals who want to produce a specific model or component without committing to equipment, our custom 3D print service offers material selection guidance and print production. Submit your STL files and our team will advise on the most appropriate process for your application.
To explore the full printer range, visit our 3D printers collection. For more context on the technology choices involved in resin versus FDM printing, our FDM vs resin comparison guide covers the technical fundamentals in accessible detail.
Also in this hub: 3D printing for prototyping: industry guide and architecture and engineering model printing.
Frequently Asked Questions
Can I use a desktop resin printer to make dental models?
Yes, for study models and diagnostic casts. Desktop resin printers such as the Elegoo Mars 5 Ultra produce dental study models from digital scan files with accuracy sufficient for diagnosis and treatment planning. For items that will be used in the patient's mouth (intra-oral appliances), a biocompatible certified resin is required rather than standard photopolymer.
Are 3D printed models used in real dental practices?
Yes. Digital workflows combining intra-oral scanners and desktop resin printers are now common in orthodontic practices for aligner fabrication and case documentation, and in dental schools for training. The workflow replaces traditional stone models poured from alginate impressions with faster, more consistent, and digitally storable alternatives.
What resolution do I need in a resin printer for dental models?
For diagnostic study models, XY resolution of 50µm or better is generally considered adequate. The Elegoo Mars 5 Ultra achieves 18µm XY resolution, which substantially exceeds this requirement. Layer thickness (Z resolution) is typically set to 50µm for dental models.
What materials are safe for skin contact in prosthetic applications?
Non-pigmented natural PLA and certain medical-grade PETG formulations are commonly used for skin-contact assistive devices. Biocompatibility testing under ISO 10993-1 is the relevant standard. Extended skin contact warrants more careful material selection than incidental handling.
Can medical schools 3D print anatomy models from CT scans?
Yes. DICOM data from CT or MRI scans can be processed into printable STL files using tools such as 3D Slicer or InVesalius. Printed anatomical models from real patient data are used in medical education, surgical planning rehearsal, and clinical communication. No medical device certification is required for educational props not intended for patient contact.
What is the difference between a surgical planning model and a surgical guide?
A surgical planning model is a physical replica of patient anatomy used on a bench for pre-operative planning. It does not contact the patient during surgery. A surgical guide is placed on the patient during the procedure to direct a drill or osteotomy cut. Surgical guides are patient-contact medical devices subject to Health Canada classification requirements; planning models are not.
Does EnviroLaser3D stock biocompatible dental resins?
EnviroLaser3D stocks a range of standard and engineering photopolymer resins. For certified biocompatible dental resins meeting ISO 10993 and EN ISO 7405 requirements, dental supply companies are the appropriate source. Our team can advise on printer compatibility with third-party dental resins.
What 3D printer is best for medical education models?
For anatomical models and simulation trainers, the choice between FDM and resin depends on the scale and detail required. Large anatomical structures (pelvis, spine, thoracic cage) print efficiently in FDM with PETG or PLA. Fine detail structures (cochlear anatomy, vascular geometry, dental root morphology) require resin resolution. Many education programmes use both technologies for different model types.