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Physical and structural characterization of bis-acryl composite resin
Wendy E Rodríguez-Guardado1, Eric M Rivera-Muñoz2, Janeth Serrano-Bello3
1Multidisciplinary Dental Research Laboratory, School of Medicine, Autonomous University of Querétaro, Santiago de Querétaro, Mexico.
Scientific Reports
|April 5, 2024
Summary
The study found that Luxatemp and Structur bis-acryl resins offer superior fracture resistance due to their chemical and structural properties. These materials, featuring long cross-linkage polymer chains and specific filler particles, enhance flexural strength in dental prostheses.
Area of Science:
- Dental Materials Science
- Polymer Chemistry
- Biomaterials Engineering
Background:
- Selecting appropriate materials is crucial for the success of fixed prostheses like crowns and bridges.
- Bis-acryl resins are commonly used in dental restorations, but their fracture resistance varies.
Purpose of the Study:
- To investigate the relationship between the chemical and structural characteristics of bis-acryl resins and their fracture resistance.
- To compare the flexural strength of four bis-acryl resins: Luxatemp, Protemp, Structur, and Telio.
Main Methods:
- Four bis-acryl resins were tested using three-point bending flexural tests.
- Microstructure and morphology were analyzed using scanning electron microscopy (SEM).
- Molecular structure was analyzed using Infrared Spectroscopy through Attenuated Total Reflectance (ATR).
Main Results:
- Luxatemp and Structur exhibited significantly higher flexural strength compared to Protemp and Telio.
- SEM analysis revealed regular particle size on the surface of Luxatemp.
- ATR analysis indicated long cross-linkage polymer chains and the presence of CO3, SiO2, and N-H groups in higher-strength resins.
Conclusions:
- The chemical composition and microstructure of bis-acryl resins significantly influence their fracture resistance.
- Luxatemp and Structur demonstrate superior mechanical properties for fixed prosthesis applications.
- Specific filler particles and polymer chain structures contribute to enhanced flexural strength in dental materials.
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