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The Bell BriefFrom Dr. Jennifer Bell, DDS
MEDIUMClinicalTier 1

Revisiting the marginal gap in the digital dental age – Clinical relevance of finish line location in IOS-based workflows compared to conventional workflows

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

Prosthodontists and restorative dentists using intraoral scanners (IOS) need to know that finish-line placement directly affects marginal-gap size, which can impact crown longevity and remake rates.

Key points

  • The study compares marginal-gap outcomes between conventional and digital workflows, focusing on finish-line position (supra-, equi-, or sub-gingival).
  • Results show that intraoral-scanner workflows produce clinically acceptable gaps only when finish lines are placed equi- or supra-gingivally; sub-gingival margins remain a risk factor.
  • Clinicians should consider shifting prep designs or adopting additional gingival-retraction techniques when treating cases that require sub-gingival margins.
  • Practice-level implication: reduced remakes and cement-line micro-leakage if digital margin design guidelines are followed.

Who should care

SpecialistAssociate

Read the original on Journal of Prosthetic Dentistry (JPD)

Full reporting and any paywall content live on sciencedirect.com. We summarize and score; we do not republish.

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