Sustainability in Orthodontic Laboratories: Reducing Waste with Digital Workflows

The Environmental Cost of Traditional Lab Work

Traditional orthodontic laboratory processes generate substantial material waste:

• Plaster — Pouring, trimming, and disposing of plaster models produces dust, wastewater contamination, and solid waste. A busy lab might pour hundreds of models per week, each requiring fresh plaster that's used once and discarded.
• Alginate — Impression materials are single-use and non-recyclable. The trays, mixing bowls, and spatulas add to the waste stream.
• Shipping materials — Physical impressions and models require packaging, cushioning materials, and courier transport with associated carbon emissions.
• Chemical waste — Soldering flux, acrylic monomers, and various finishing compounds require proper hazardous waste disposal.

These materials and processes have been accepted as necessary costs of doing business. But the digital transformation in orthodontics is proving that much of this waste is avoidable.

How Digital Workflows Reduce Waste

Eliminating Plaster

The single biggest waste reduction in a digital lab comes from replacing plaster models with 3D-printed or purely digital alternatives:

• Digital-only cases — Many appliances can be designed and manufactured entirely from digital data, with no physical model required at any point.
• 3D-printed models — When a physical model is needed, it's printed in precisely the size and quantity required. No excess material, no trimming waste.
• Digital archiving — Instead of storing thousands of plaster models in warehouses (a common practice for legal and clinical reasons), digital files are stored on servers at negligible environmental cost.

Reducing Shipping

Digital case submission eliminates the need to ship physical impressions. The environmental impact of this shift is significant:

• No packaging materials (boxes, foam, bubble wrap)
• No courier transport (fuel, emissions, vehicle wear)
• No failed deliveries or damaged shipments requiring replacement

At NordicDens, the majority of our cases are received digitally, and finished appliances are shipped in minimal, recyclable packaging.

Material Efficiency in Manufacturing

3D printing and digital manufacturing are inherently more material-efficient than traditional methods:

• Additive manufacturing uses only the material needed for the part, unlike subtractive methods (milling) that generate waste from removed material.
• Direct-print appliances eliminate the thermoforming step, which produces sheet cutoffs and failed forming attempts.
• Batch optimization — Printer software arranges parts to maximize build platform utilization, reducing the number of print cycles and associated energy use.

Energy Considerations

Digital workflows do consume electricity — for scanners, computers, printers, and curing units. However, the total energy footprint is typically lower than traditional processes when accounting for:

• Elimination of shipping energy costs
• Reduced HVAC load (no plaster dust management, reduced ventilation requirements)
• More efficient batch production vs. individual manual fabrication

Practical Steps Labs Can Take

Beyond the inherent benefits of digital workflows, laboratories can further reduce environmental impact through:

• Resin recycling programs — Some 3D printing resin manufacturers offer recycling for unused or waste resin
• Print waste management — Properly curing and disposing of print support structures and failed prints
• Energy-efficient equipment — Choosing printers and curing units with lower power consumption
• Recyclable packaging — Using cardboard and paper-based materials for appliance delivery
• Digital communication — Replacing paper prescriptions, invoices, and correspondence with digital alternatives

NordicDens and Sustainability

Our commitment to digital workflows at NordicDens has naturally driven significant waste reduction compared to traditional lab operations:

• Over 90% of our cases are received digitally, eliminating impression shipping waste
• 3D-printed models have replaced plaster in our standard workflows
• We use recyclable packaging for all deliveries
• Digital archiving replaces physical model storage

We view sustainability as a continuous improvement process, not a checkbox. As new technologies and practices emerge that further reduce environmental impact without compromising quality, we adopt them.

Why Clinics Should Care

Environmental responsibility is increasingly important to patients, staff, and the broader community. Clinics that partner with labs using digital, low-waste workflows can confidently communicate their commitment to sustainable practices.

Beyond the environmental benefits, digital workflows also deliver practical advantages — faster turnaround, better accuracy, and lower shipping costs — that make them the right choice on every dimension.