Novel Resin Composite with Optimized POSS Concentration developed as new material option in dentistry: Study
Researchers have successfully developed anew resin composite showing significant performance improvements with POSS addition below 4wt%, reaching its optimum at 4wt%. This advancement introduces a new material option for clinical applications, offering potential as an alternative material in dentistry.
The purpose of this study was to develop a novel dental resin composite by integrating polyhedral oligomeric silsesquioxane (POSS) with zirconia modified by 10-methacryloxydecyl dihydrogen phosphate (10-MDP). The resin matrix was synthesized in dark conditions.
The experimental groups were designated based on the content of POSS incorporated into the resin matrix, with a concentration range of 2 wt% to 8 wt%. After thoroughly mixing the resin matrix, 5 wt% zirconia treated with 10-MDP was added. Result: The FTIR spectra showed the appearance of new absorption bands, and the XPS(X-ray Photoelectron Spectroscopy) study confirmed the effectiveness of the surface treatment of zirconia.
The resin composite exhibited optimal properties at a POSS concentration of 4 wt%, with significant improvements in flexural strength, compressive strength, and Vickers hardness compared to the control group. However, these properties decreased when the concentration exceeded that of the 4 wt % group. The incorporation of POSS significantly reduced the polymerization shrinkage of the resin composite. Moreover, none of the experimental resin composites exhibited cytotoxicity, indicating excellent biocompatibility.
They have succeeded in developing a new resin composite that significantly improves its performance when POSS is added at a concentration of <4wt%, and reaches its optimum level at a concentration of 4wt%. The development of this novel resin composite provides a new material option for clinical applications. The improved properties from this work show potential for developing an alternative material for clinical application.
Reference:
Xinhong Yu, Shuhan Yang, Dong Han, TianQi Wang, Qi Xie, WeiLi Xie. A novel dental resin composite based on POSS and MDP-modified Zirconia: Preparation and evaluation. Journal of Dentistry, Volume 155, 2025, 105638, ISSN 0300-5712. https://doi.org/10.1016/j.jdent.2025.105638 (https://www.sciencedirect.com/science/article/pii/S0300571225000831)
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