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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
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Flexural behavior of PEEK materials for dental application
Andreas Dominik Schwitalla1, Tobias Spintig1, Ilona Kallage1
1Dental Materials and Biomaterial Research, Department of Prosthodontics, School of Dentistry, Charité-University Medicine Berlin, Aßmannshauser Str. 4-6, 14197 Berlin, Germany.
Dental Materials : Official Publication of the Academy of Dental Materials
|September 13, 2015
Summary
Poly-ether-ether-ketone (PEEK) demonstrates excellent mechanical properties, making it a promising metal-free alternative for dental restorations. Its high bending strength and modulus exceed industry standards, supporting its use in dentistry.
Area of Science:
- Biomaterials Science
- Dental Materials
- Polymer Science
Background:
- Poly-ether-ether-ketone (PEEK) is a high-performance thermoplastic polymer utilized as an alternative implant material since 1998.
- Its bone-like mechanical and iso-elastic properties suggest potential for dental applications.
Purpose of the Study:
- To evaluate the mechanical properties, specifically bending modulus and strength, of various PEEK compounds.
- To assess the suitability of PEEK as a material for dental restorations.
Main Methods:
- 150 specimens from 11 PEEK compounds were tested using a three-point bending test.
- Specimens were subjected to dry storage and incubation in Ringer solution for up to 84 days at 37°C.
Main Results:
- Bending moduli varied from 2.73±0.26 GPa (unfilled) to 47.27±10.3 GPa (carbon fiber reinforced).
- Bending strengths ranged from 170.37±19.31 MPa to 1009.63±107.33 MPa.
- All tested PEEK compounds exceeded the minimum strength requirement of 65 MPa for dental plastics (DIN EN ISO 10477).
Conclusions:
- PEEK materials exhibit mechanical properties suitable for dental applications.
- PEEK offers a viable option for metal-free dental restorations, particularly for patients with allergies or bruxism.
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