Shrinkage Stress Behavior of Liquid Rubber–Modified Dental Composites
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brak dyscyplin
| Status: | |
| Autorzy: | Pałka Krzysztof, Sowa Monika |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Strony: | 197 - 197 |
| Efekt badań statutowych | NIE |
| Finansowanie: | This work was supported by the project of Lublin University of Technology, Poland (grant FD- 20/IM-5/078) |
| Materiał konferencyjny: | TAK |
| Nazwa konferencji: | AMT 2026 Advanced Materials and Technologies Conference |
| Skrócona nazwa konferencji: | AMT 2026 |
| URL serii konferencji: | LINK |
| Termin konferencji: | 14 czerwca 2026 do 17 czerwca 2026 |
| Miasto konferencji: | Łódź |
| Państwo konferencji: | POLSKA |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Witryna wydawcy |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Abstrakty: | angielski |
| Polymerization shrinkage remains a critical challenge in the performance and longevity of resin- based dental composites, as it generates stresses at the tooth–restoration interface. Such stresses may lead to create marginal gaps, microleakage, and secondary caries. In recent years, the incorporation of liquid rubber as a modifying phase has emerged as a promising strategy to reduce these stresses by enhancing the capacity for stress relaxation and energy dissipation. Therefore, this study investigates the effect of modification with liquid rubber on the development and evolution of shrinkage stresses in dental composites. Shrinkage stress development, polymerization shrinkage, and flexural stress relaxation were experimentally evaluated to assess the influence of liquid rubber modification. The results demonstrated a consistent reduction in shrinkage stresses for the modified materials, amounting to 19% for the flowable composite and 14% for the conventional one. A similar trend was observed for polymerization shrinkage, with values of 3.62% and 3.09% recorded for the unmodified and modified flowable materials, respectively, and 2.74% and 1.94% for the conventional composites. These findings were further supported by stress relaxation measurements, which revealed a noticeably lower fraction of unrelaxed stresses in the modified composites, with relative values of 0.523 and 0.347 for flow materials, unmodified and modified, respectively, and 0.473, and 0.336 for classic composites. The observed correlations indicate that the incorporation of liquid rubber enhances the viscoelastic response of the composites, thereby facilitating more effective stress dis |
