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Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
Debonding Behavior of Resin-Cemented Attachment-Housing Denture-Base Complexes Under Cyclic Mechanical Loading.
Evangelos V Skondras1, Savvas N Kamalakidis1,2, Eftychia Skondra3
1Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Materials (Basel, Switzerland)
|June 12, 2026
Summary
Dental implant overdentures can debond, but cobalt-chromium denture bases prevent this complication. This study found denture base material significantly impacts attachment housing debonding and tensile force, unlike housing material.
Area of Science:
- Biomaterials Science
- Dental Prosthetics
- Mechanical Engineering
Background:
- Implant-supported overdentures enhance retention and satisfaction.
- Debonding of attachment housings from the denture base is a common prosthetic issue.
Purpose of the Study:
- To evaluate how attachment-housing and denture-base materials affect debonding and tensile force.
- To assess the impact of cyclic mechanical loading on resin-cemented attachment housing denture-base complexes.
Main Methods:
- Thirty specimens were fabricated using polymethylmethacrylate (PMMA), polyetheretherketone (PEEK), or cobalt-chromium (Co-Cr) denture bases.
- Titanium or PEEK attachment housings were bonded with resin cement.
- Specimens underwent 1100 cycles of tensile and compressive loading.
Main Results:
- Debonding occurred in 60% of specimens, varying significantly by denture base material.
- No debonding was observed with Co-Cr bases, while PMMA and PEEK showed 75% debonding.
- Co-Cr specimens exhibited significantly higher maximum tensile force than PMMA and PEEK groups.
Conclusions:
- Denture base material significantly influences attachment housing debonding and tensile strength under cyclic loading.
- Cobalt-chromium denture bases offer superior resistance to debonding compared to PMMA and PEEK.
- Attachment-housing material did not show a significant main effect on debonding or tensile force.
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