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09:06
Evaluation of the Curing of Adhesive Systems by Rheological and Thermal Testing
Published on: July 3, 2020
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Methacrylate saccharide-based monomers for dental adhesive systems
Andressa Dos Santos1,2, Carolina B André3, Gedalias C Martim1
1Materials Chemistry and Sensors Laboratories, Department of Chemistry, State University of Maringa, Colombo Avenue, 5790, Maringá, PR, Brazil.
International Journal of Adhesion & Adhesives
|May 28, 2019
Summary
New methacrylate monomers derived from glucose, sucrose, and chitosan enhance dental adhesive properties. Sucrose-based monomers show promising antimicrobial activity and improved bond strength after six months.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Dental Materials
Background:
- Development of novel dental adhesive monomers is crucial for improving restorative material longevity and performance.
- Saccharide-based structures offer potential for creating biocompatible and functional monomers.
Purpose of the Study:
- To synthesize and characterize three new methacrylate monomers from glucose (Gluc-MA), sucrose (Sucr-MA), and chitosan (Chit-MA).
- To evaluate the efficacy of these monomers in dental adhesive formulations, assessing bond strength, antimicrobial activity, and polymerization characteristics.
Main Methods:
- Synthesis and characterization of Gluc-MA, Sucr-MA, and Chit-MA using spectroscopic techniques (mid-IR, 1H, 13C NMR).
- Formulation of dental primers containing HEMA and varying concentrations of the synthesized monomers.
- In vitro testing of dentin bond strength (24h and 6 months), antimicrobial activity (Alamar Blue assay), degree of conversion (DC), and maximum polymerization rate (Rpmax).
Main Results:
- Spectroscopic analysis confirmed the successful incorporation of vinyl groups into the saccharide structures.
- Sucrose-methacrylate (Sucr-MA) at 1% concentration demonstrated a significant increase in dentin bond strength after 6 months (40.6 MPa) and notable antimicrobial activity.
- All synthesized monomers exhibited some antimicrobial activity post-polymerization, with Gluc-MA, Chit-MA (4%), and Sucr-MA (1-4%) effectively reducing bacterial metabolism.
Conclusions:
- Methacrylate monomers derived from saccharides can be successfully synthesized and incorporated into dental adhesive primers.
- Sucr-MA shows significant potential for enhancing both the mechanical properties (bond strength) and antimicrobial efficacy of dental adhesives.
- The study highlights the promise of saccharide-based monomers as functional additives in dental restorative materials.
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