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Multifunctional Dental Adhesives Formulated with Silane-Coated Magnetic Fe3O4@m-SiO2 Core-Shell Particles to
Lamia Sami Mokeem1, Isadora Martini Garcia1,2, Abdulrahman A Balhaddad3
1Ph.D. Program in Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, Maryland 21201, United States.
ACS Applied Materials & Interfaces
|January 3, 2024
Summary
A new magnetic platform enhances dental restoration longevity by improving dentin adhesion and inhibiting bacteria. This innovative material boosts bond strength by 28% without adverse effects, promising more durable dental treatments.
Area of Science:
- Biomaterials Science
- Dental Materials
- Nanotechnology
Background:
- Dental restoration longevity is compromised by degradation at the tooth/dental material interface due to bacterial acids, MMPs, and hydrolysis.
- Adhesive interfacial breakdown leads to restoration failure, causing leakage, pain, recurrent caries, and replacement needs.
Purpose of the Study:
- To synthesize and characterize a multifunctional magnetic platform, CHX@SiQuac@Fe3O4@m-SiO2, for enhanced dental bonding.
- To evaluate the platform's ability to inhibit bacteria, stabilize the hybrid layer, and improve filler infiltration via magnetic motion.
- To assess the impact of the platform on adhesive properties, bond strength, antibacterial efficacy, and cytotoxicity.
Main Methods:
- Synthesis and characterization of CHX@SiQuac@Fe3O4@m-SiO2 using techniques like XRD, FT-IR, VSM, BET, and electron microscopy.
- Incorporation of the platform into an experimental adhesive resin.
- Evaluation of antibacterial activity, cytotoxicity, mechanical properties, and microtensile bond strength under simulated pulpal pressure.
Main Results:
- The CHX@SiQuac@Fe3O4@m-SiO2 platform demonstrated multifunctional capabilities.
- Adhesive incorporating 4 wt% of the platform showed a 28% increase in bond strength under a guided magnetic field.
- The platform enhanced dentin adhesion without negatively affecting adhesive properties or causing cytotoxicity.
Conclusions:
- CHX@SiQuac@Fe3O4@m-SiO2 is a promising material for strengthening the tooth/dental material interface.
- The magnetic guided bonding process using this platform offers a novel approach to improve the stability and lifespan of dental restorations.
- This study provides a roadmap for developing advanced adhesive formulations with enhanced performance.
