Volume: 2, 2023
2nd International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland:
ENVIRONMENT – PLANT – ANIMAL – PRODUCT
Abstract number: T048
DOI: https://doi.org/10.24326/ICDSUPL2.T048
Published online: 19 April 2023
ICDSUPL, 2, T048 (2023)
Effect of reinforcement particle size on wear of dental composites
Monika Sowa1*
1 Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland
* Corresponding author: d577@pollub.edu.pl
Abstract
Dental composites based on dimethacrylate resins reinforced with an inorganic phase are the most versatile materials for tooth restoration. They are of great interest in both clinical and scientific research. The purpose of this study was to evaluate the effect of reinforcement particle size on the tribological wear of the composites and their hardness. The test materials were conventional, hybrid and nanofiller composites. Wear measurements were carried out in a pin-on-disc wear simulator in an artificial saliva environment at 37°C, with silicon carbide as the counterexample. The results show that composites reinforced with nanoparticles exhibit better wear resistance to abrasive wear compared to those using macro- and micro-particle reinforcement. The better wear resistance of nanocomposites is due to smaller inter-particle spacing in the matrix. Microhardness tests were conducted using the Vickers method at a contact force of 0.5 N for 30s. In the case of hardness, which has a strong relationship with strength properties and abrasion resistance in relation to reinforcement particle size, composites containing nanofillers show higher microhardness values than conventional composites due to better contact between nanofillers and matrix than microfillers. The properties of dental composites can be altered by changing reinforcement materials and the shape and size of fillers to improve the hardness and abrasion resistance of dental composites.
How to cite
M. Sowa, 2023. Effect of reinforcement particle size on wear of dental composites. In: 2nd International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland: Environment – Plant – Animal – Product. https://doi.org/10.24326/ICDSUPL2.T048