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Updated: Feb 7, 2026
05:41
Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
Published on: February 23, 2017
20.0K
Tannic Acid-Loaded Antibacterial Hydroxyapatite-Zirconia Composite for Dental Applications
Nusrat Yeasmin1, Joel Pilli1,2, Julian McWilliams3
1Sustainable Manufacturing and Tissue Engineering Laboratory, Department of Materials and Metallurgical Engineering, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA.
Crystals
|February 6, 2026
Summary
This study developed tannic acid-loaded hydroxyapatite-zirconia composites for dental applications. These advanced biomaterials show promising antibacterial efficacy against Staphylococcus aureus, potentially reducing implant failures.
Area of Science:
- Biomaterials Science
- Dental Materials
- Nanotechnology
Background:
- Hydroxyapatite (HA) is crucial for bone tissue engineering but susceptible to biofilm formation and bacterial infections, risking dental implant failure.
- Tannic acid (TA), a polyphenol, offers potent antibacterial and antioxidant properties, addressing biofilm challenges on dental surfaces.
- Zirconia incorporation enhances mechanical properties in dental composites.
Purpose of the Study:
- To analyze the biomedical potential of tannic acid (TA)-loaded hydroxyapatite-zirconia composites for dental applications.
- To evaluate the antibacterial efficacy and biocompatibility of these novel dental biomaterials.
- To investigate the structural and morphological characteristics of the TA-HA-ZrO2 composite.
Main Methods:
- X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and field emission scanning electron microscopy (FESEM) were used for material characterization.
- In vitro cell culture studies assessed the biocompatibility of the composite samples.
- Antibacterial efficacy was tested against Staphylococcus aureus (S. aureus) over 24 hours.
Main Results:
- The TA-loaded hydroxyapatite-zirconia composite exhibited significant antibacterial activity against S. aureus.
- Material characterization confirmed the successful incorporation of tannic acid and zirconia into the hydroxyapatite matrix.
- In vitro studies indicated good biocompatibility of the developed composite materials.
Conclusions:
- Tannic acid-loaded hydroxyapatite-zirconia composites demonstrate significant promise as advanced dental biomaterials.
- The incorporation of tannic acid effectively imparts antibacterial properties, combating S. aureus infections.
- These findings suggest potential for improved dental implant performance and reduced revision surgeries in oral healthcare.
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