Carimatec Uses DLP 3D Printing to Speed Up Dental Aligner Production

Why Dental Aligners Are a Good Fit for 3D Printing

Clear dental aligners start as physical molds. Each mold represents one stage in a patient's tooth movement, and every patient needs a unique sequence. That makes aligner production a high-mix, low-volume problem: lots of different parts, small batch sizes, tight tolerances. Traditional manufacturing hates that setup. 3D printing handles it naturally.

Carimatec, a Seoul-based company, has built its business around exactly this workflow. The company says its printers have produced more than 500,000 clear-aligner setup molds. Each print run can yield roughly 50 to 60 molds in 60 to 90 minutes, depending on the part geometry and layer settings.

C-CAT and S-BAT: Two Technical Hooks

Carimatec runs on DLP, or digital light processing. Instead of tracing a laser across a vat of resin, DLP projects an entire layer at once. That gives it a natural speed advantage for flat, detailed parts like dental molds.

The bottleneck in DLP is separation. After each layer cures, the part has to lift off the bottom of the resin vat before the next layer starts. Carimatec calls its solution C-CAT, short for Carima Continuous Additive Technology. The company says it reduces the separation force enough to keep the process moving more continuously, rather than repeating a slow lift-peel-refill cycle.

The second system, S-BAT, addresses a different DLP problem. Large resin printers often stitch together multiple projector images to cover a wide build area. The seams between those projections can show up as visible lines or inconsistent curing. S-BAT calibrates the overlap zones to produce a more uniform surface across the whole part.

Materials and the DM400 System

Carimatec sells the printer, resin materials, and slicing software as one platform. The company argues that bundling hardware with chemistry gives customers more control over exposure parameters, curing behavior, and repeatability. Its material lineup includes elastomeric, high-temperature, ceramic, and flame-retardant options.

The DM400 is Carimatec's automated industrial system. It can print, remove, clean, cure, dry, and collect parts with limited operator intervention. Carimatec claims a single DM400 can produce more than 800 molds per day in a configured workflow. That throughput matters for labs that need to turn around multiple patient cases daily.

The Market Context

Dental aligners have become one of additive manufacturing's most visible consumer applications. The global market for clear aligners continues to grow, driven by cosmetic demand and lower costs compared to traditional braces. 3D printing is the hidden backbone of that market: almost every aligner on the market starts as a DLP-printed mold.

Carimatec is not the only company chasing this space. EnvisionTEC, Asiga, and several Chinese manufacturers all make DLP systems marketed at dental labs. Carimatec's pitch is that its integrated hardware-resin-software stack delivers more predictable results than mixing third-party printers with generic materials.