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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)
Dr. Shravani Dali has completed her BDS from Pravara institute of medical sciences, loni. Following which she extensively worked in the healthcare sector for 2+ years. She has been actively involved in writing blogs in field of health and wellness. Currently she is pursuing her Masters of public health-health administration from Tata institute of social sciences. She can be contacted at editorial@medicaldialogues.in.
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751