Long-term water immersion of dental composites based on bioactive glass

Gajski P, Par M, Haugen HJ, Hildebrand T, Zheng K, Boccaccini AR, Tarle Z, Marovic D (2025)

Publication Type: Journal article

Publication year: 2025

Journal

Scientific Reports Nature Publishing Group: Open Access Journals - Option B

Book Volume: 15

Article Number: 18857

Journal Issue: 1

DOI: 10.1038/s41598-025-04143-9

Abstract

This study investigated the effect of copper-doped mesoporous bioactive glass nanospheres (Cu-MBGN) on water sorption, solubility and porosity of an experimental dental composite over 180 days of water immersion, comparing it to bioactive glass 45S5 (BG) or inert fillers. Composites contained 35wt% Bis-GMA/TEGDMA resin (60/40), 55wt% silanised barium-glass fillers, and 10wt% of either Cu-MBGN (10-CuBG), 45S5 bioactive glass (10-BG), or inert silica nanofillers (10-Si). Both BG composites showed a higher mass increase during water immersion than inert control (10-Si) at all measured time points (p < 0.001), ranked as 10-BG > 10-CuBG > 10-Si. After 30 days, 10-BG had the greatest mass increase (4.02 ± 0.21%), followed by a decline until 180 days, while 10-CuBG (1.67 ± 0.10%) and 10-Si (1.19 ± 0.07%) showed gradual mass increases until the end of the measurement. 10-BG displayed higher water sorption and solubility than other materials, while 10-CuBG had the highest porosity parameters. While 10-BG and 10-Si showed significant increases in both total and open porosity after water immersion, no such changes were observed for 10-CuBG. The pore characteristics of dry specimens did not affect final water sorption and solubility after 180 days of water immersion. The Cu-MBGN composite had a lower mass increase than commercial BG and met ISO 4049 standards for both water sorption and solubility.

Authors with CRIS profile

Aldo Boccaccini Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)

Involved external institutions

University of Zagreb / Sveučilište u Zagrebu HR Croatia (HR) University of Oslo NO Norway (NO) Nanjing Medical University / 南京医科大学 CN China (CN)

How to cite

APA:

Gajski, P., Par, M., Haugen, H.J., Hildebrand, T., Zheng, K., Boccaccini, A.R.,... Marovic, D. (2025). Long-term water immersion of dental composites based on bioactive glass. Scientific Reports, 15(1). https://doi.org/10.1038/s41598-025-04143-9

MLA:

Gajski, Petra, et al. "Long-term water immersion of dental composites based on bioactive glass." Scientific Reports 15.1 (2025).

BibTeX: Download