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Flexural properties of prosthetic provisional polymers
Martin Rosentritt1, Michael Behr, Reinhold Lang
1Department of Prosthetic Dentistry, University of Regensburg, Germany. martin.rosentritt@klinik.uni-regensburg.de
Summary
This study compared provisional dental materials, finding Protemp3 and Provipont offer superior flexural strength and fracture resistance for long-term use. Repair effectiveness varied by material type.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Prosthodontics
Background:
- Provisional restorations are crucial in dental prosthetics.
- Evaluating the mechanical properties of provisional materials after repair is essential for clinical longevity.
Purpose of the Study:
- To compare the flexural strength and fracture resistance of five resin-based provisional materials after repair.
- To assess the effectiveness of different repair materials and techniques on mechanical properties.
Main Methods:
- In-vitro study utilizing a three-point bending test.
- Fracture testing of 3-unit fixed partial dentures (FPDs).
- Comparison of initial properties and post-repair mechanical performance.
Main Results:
- Protemp3 and Provipont exhibited significantly higher initial flexural strength than Temphase, Luxatemp, and Trim.
- Repair decreased flexural strength in Luxatemp and Temphase under specific conditions.
- Fracture strength varied, with Protemp3 showing the highest, and repair did not significantly alter FPD fracture strength.
Conclusions:
- Protemp3 and Provipont are favorable for long-term provisional applications due to superior mechanical properties.
- Repair effectiveness is material-dependent, but FPD fracture resistance remains largely unaffected by provisional resin repair.