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The Bell BriefFrom Dr. Jennifer Bell, DDS
HIGHResearchTier 1

Effect of Implant Design on Fracture Resistance, Mode, and Crystal Structure of One‐ and Two‐Piece Zirconia Implants With Ceramic or Titanium Abutment Screws: An In Vitro Study

SourceClinical Oral Implants ResearchTier 1Peer-Reviewed Research

By Abdulaziz Gul, Evaggelia Papia, Siamak Eqtesadi, Magnus Anderson, Jonas P. Becktor, Per Vult von Steyern

Originally at onlinelibrary.wiley.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

Zirconia implant fracture resistance and screw material choice directly affect long-term implant survival and restoration cost in the esthetic zone; practices placing zirconia implants need to know which designs and abutment-screw combinations reduce mechanical failure risk.

Key points

  • In-vitro tests compared one-piece vs two-piece zirconia implants under static and dynamic loading to ISO 14801 standards.
  • Titanium abutment screws improved fracture resistance and shifted failure mode from implant body to screw in two-piece designs.
  • Crystal-phase analysis showed stress-induced tetragonal-to-monoclinic transformation at fracture sites, correlating with reduced toughness.
  • Results apply to anterior single-tooth replacements where zirconia is chosen for metal-free esthetics; clinicians should weigh added screw cost vs lower fracture risk.

Who should care

SpecialistAcademia

Read the original on Clinical Oral Implants Research

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

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