A novel dental resin composite based on POSS and MDP-modified Zirconia: Preparation and evaluation

  • J Dent. 2025 Apr:155:105638. doi: 10.1016/j.jdent.2025.105638.
Xinhong Yu  1 ,  Shuhan Yang  2 ,  Dong Han  3 ,  TianQi Wang  4 ,  Qi Xie  5 ,  WeiLi Xie  6
Affiliations
  • 1. The First Affiliated Hospital Of Harbin Medical Uhiversity, School of Stomatology, Harbin Medical University, Harbin 150001, China. Electronic address: [email protected].
  • 2. The First Affiliated Hospital Of Harbin Medical Uhiversity, School of Stomatology, Harbin Medical University, Harbin 150001, China. Electronic address: [email protected].
  • 3. The First Affiliated Hospital Of Harbin Medical Uhiversity, School of Stomatology, Harbin Medical University, Harbin 150001, China. Electronic address: [email protected].
  • 4. The First Affiliated Hospital Of Harbin Medical Uhiversity, School of Stomatology, Harbin Medical University, Harbin 150001, China. Electronic address: [email protected].
  • 5. Department of Stomatology, Harbin Medical University, Harbin 150001, China. Electronic address: [email protected].
  • 6. The First Affiliated Hospital Of Harbin Medical Uhiversity, School of Stomatology, Harbin Medical University, Harbin 150001, China. Electronic address: [email protected].
PMID: 39971180 DOI: 10.1016/j.jdent.2025.105638
Abstract

Introduction: 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).

Methods: 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.

Conclusion: We 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%.

Clinical significance: 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.

Keywords
10-MDP; Dental resin composite; POSS; Polymerization shrinkage; Strength.
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