MEDIUMResearchTier 1
Letter to the editor regarding, "accuracy of 3D scan data of extraorally digitized
SourceJournal of Prosthetic Dentistry (JPD)Tier 1Peer-Reviewed Research
Originally at sciencedirect.com
Summary & scoring by The Bell Brief (Dr. Jennifer Bell) using the Drill-Down Protocol (Drill-Down Score) — not the original publisher.
Why it matters for dental
Digital-scan accuracy directly affects fit and remake rates of complete dentures; owners of labs or practices that digitize removable prostheses should know whether metal bases degrade scan fidelity when intraoral scanners are used.
Key points
- The letter critiques a JPD study that compared scan trueness of maxillary and mandibular complete dentures with and without metal bases using three intraoral scanners.
- Key concern raised: metal-base dentures produced statistically larger RMS deviations (≈ 120 µm vs 60 µm) on the intaglio surface, potentially altering occlusion and retention.
- Authors recommend that clinicians verify metal-base scans with a second reference scan or physical verification jig before final processing.
- No change in clinical protocol is mandated, but labs serving DSOs or high-volume removable practices may need to adjust scanner settings or workflows for metal-containing prostheses.
Who should care
OwnerSpecialistAcademia
Read the original on Journal of Prosthetic Dentistry (JPD)
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