Dental lab remakes are not random. They trace back to specific failure points in the process, often margin fit, communication gaps and design shortcuts. A multicenter audit of over 40,000 fixed restorations found remake rates varied by restoration type, with veneers and onlays highest. Fixing the recurring points reduces remakes.
Remakes get treated as a fixed cost of running a lab — something you budget for rather than something you fix. But a remake isn't random. It's a specific failure at a specific point in the process, and most of those points are the same ones over and over.
What the research actually shows
A multicenter audit of over 40,000 fixed prosthodontic restorations across several dental laboratories found remake rates that varied meaningfully by restoration type — veneers and onlays saw the highest remake rates, with crowns and bridges somewhat lower. That pattern lines up with intuition: restorations with tighter esthetic and fit tolerances have less room for the small errors that cause a remake.
The same body of research points to communication gaps between dentist and lab as a recurring theme — case instructions missing detail on porcelain selection, margin configuration, or pontic design, leaving the lab to guess at specifics that should have been explicit from the start.
Where remakes actually originate
- Incomplete case instructions — shade, margin type, and contact preferences left unstated, forcing assumptions that don't always match what the dentist wanted.
- Prep or impression quality — a scan with motion artifacts or an under-reduced prep creates problems no amount of careful design can fully compensate for.
- Margin fit — the single most direct path to a remake, since a poor margin means the restoration doesn't seat correctly regardless of how good everything else looks.
- Occlusal high spots missed in QC — caught at delivery instead of before it, because excursive movements weren't checked, only centric occlusion.
Every one of these is preventable with process, not luck. A remake is rarely a sign that a lab or designer lacks skill — it's usually a sign that one specific check got skipped under time pressure.
What actually reduces remake rates
The fixes are unglamorous but effective: case instruction templates that force the specifics dentists sometimes leave out, a margin and occlusion check that happens before delivery rather than being caught by the dentist afterward, and clear feedback loops when a remake does happen so the same root cause doesn't repeat on the next case.
This applies whether the design work happens in-house or is outsourced — the process matters more than who's sitting at the workstation. An outsourced partner with a real QC step built into every case is working from the same fundamentals that reduce remakes in a well-run in-house department.