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Related Experiment Video

Updated: Jun 18, 2026

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
07:42

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Published on: December 20, 2024

Partial-retainer design considerations for zirconia restorations.

Moustafa Nabil Aboushelib1, Albert J Feilzer, Corneliss J Kleverlaan

  • 1Dental Biomaterials Department, Faculty of Dentistry, Alexandria University, Egypt. bluemarline_1@yahoo.com

Quintessence International (Berlin, Germany : 1985)
|November 13, 2009
PubMed
Summary

The partial-retainer design significantly impacts the failure load of selective infiltration-etched zirconia restorations, with lingual designs being the weakest. Artificial aging did not affect failure load, and all failures involved tooth fracture.

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Restorative Dentistry

Background:

  • Adhesive zirconia restorations offer aesthetic advantages but face limitations in bond strength.
  • Selective infiltration etching (SIE) is a novel surface treatment enhancing zirconia-to-adhesive bonding.
  • Understanding factors beyond bond strength, like retainer design, is crucial for clinical success.

Purpose of the Study:

  • To investigate the effect of different partial-retainer designs on the failure load of SIE-treated zirconia restorations.
  • To compare the performance of various partial-retainer designs against a full-crown control.

Main Methods:

  • Cantilever zirconia restorations with pontics and partial retainers (lingual, mesiolingual, buccal, inlay) were fabricated.
  • Retainers underwent SIE treatment and were bonded to resin teeth using resin cement.

Related Experiment Videos

Last Updated: Jun 18, 2026

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
07:42

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Published on: December 20, 2024

  • Specimens were subjected to axial load on the pontic to determine failure load, with some undergoing artificial aging.

    • Main Results:

    • Partial-retainer design significantly influenced failure load (P < .001), with lingual retainers showing the lowest strength.
    • No significant difference in failure load was observed between full-crown, inlay, and buccal retainers.
    • Artificial aging did not significantly alter failure load; all failures resulted in cohesive tooth fracture.

    Conclusions:

    • The partial-retainer design is a critical factor influencing the failure load and fracture pattern of SIE-treated zirconia restorations.
    • Clinical performance of these restorations can be modulated by judicious selection of partial-retainer design.