A dental lab case moves through six stages: intake, case entry, design, quality check, manufacturing, and finishing before it ships back to the practice. Design is the stage that tends to bottleneck, and it is the one that can be outsourced case by case.
"Dental lab workflow" gets used loosely, but the actual sequence a case moves through is fairly consistent across labs, regardless of size. Knowing where each stage ends and the next begins is what makes it possible to tell where a slowdown is actually happening — and where outsourced design does or doesn't fit in.
The stages, in order
A typical case moves through six stages: intake (impressions or intraoral scans arrive), case entry (routed to a technician or queue, prescription reviewed), design (the CAD/CAM step — in-house or outsourced), quality check, manufacturing (milling, printing, or traditional fabrication), and finishing before shipping back to the practice.
Every one of those stages can become a bottleneck independently. A lab can have fast manufacturing and a slow design queue, or the reverse — which is exactly why "our workflow is slow" is rarely one problem with one fix.
Where design specifically tends to bottleneck
Design is the stage most exposed to a single point of failure: one designer out sick, one complex case that eats an entire afternoon, one open req that's been sitting unfilled for months. Manufacturing capacity scales more predictably with equipment; design capacity scales with people, and people don't scale in the same increments a mill does.
Outsourced design doesn't replace a stage — it adds capacity to one. The workflow itself doesn't change: intake, design, QC, manufacturing, finishing, ship. What changes is whether "design" always routes internally, or flexes to an outside partner when the internal queue is already full.
What changes when design is outsourced for a case
- Intake and case entry stay exactly the same — nothing changes on the lab's end before the case reaches the design step
- Scan files, opposing arch, bite registration, and case notes go out instead of into an internal queue
- A completed, QC'd design file comes back — manufacturing picks up from there, same as it would from an in-house designer
The rest of the workflow doesn't need to know or care where the design step happened — which is the whole point of treating it as added capacity rather than a different process.