Abstract
Objectives
Wear resistance is an important property of the dental materials, particularly for large restorations in the posterior regions and for the patients suffering from parafunctional activities. Additionally, the wear resistance of flowable composite resin materials is a clinical concern, although they are popular among dentists because of their easy handling. The aims of the present study were to evaluate the wear resistance of nine composite resins both condensable (G-aenial posterior, Venus, GrandioSO, Tetric EvoCeram, Ceram X duo, Filtek Supreme XTE) and new-generation flowable resin composites (G-aenial Universal Flo, GrandioSO Flow and GrandioSO Heavy Flow) and to compare these results with amalgam.
Materials and method
Eight specimens of each material were subjected to two-body wear tests, using a chewing simulator. The wear region of each material was examined under profilometer, measuring the vertical loss (μm) and the volume loss (mm3) of the materials. Additionally, SEM analysis was performed to assess surfaces irregularities.
Results
The results showed significant difference of the vertical loss and the volume loss of the examined materials (p < 0.001). Although amalgam had the best wear resistance, two condensable resin composites (GrandioSO, Ceram X duo) and all flowable materials had no significant difference with amalgam. GrandioSO had the highest wear resistance and Filtek Supreme XTE the lowest wear resistance.
Conclusion
The majority of resin composites had good wear resistance and similar to amalgam.
Clinical relevance
Based on the in vitro measurements of two-body wear resistance, the new resin composites could replace amalgam for restorations placed in occlusal stress-bearing regions. New-generation flowable resin materials may also be used in occlusal contact restorations.
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The authors declare that they have no conflict of interest.
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The present work was performed in Friedrich-Alexander-University Erlangen- Nürnberg (FAU) in fulfillment of the requirements for obtaining the degree “Dr. med. dent” from the first author.
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Lazaridou, D., Belli, R., Petschelt, A. et al. Are resin composites suitable replacements for amalgam? A study of two-body wear. Clin Oral Invest 19, 1485–1492 (2015). https://doi.org/10.1007/s00784-014-1373-4
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DOI: https://doi.org/10.1007/s00784-014-1373-4