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Dentin primer based on a highly functionalized gelatin-methacryloyl hydrogel
Ala Alia1, Feng Gao2, John C Mitchell3
1Midwestern University, College of Graduate Studies, Biomedical Sciences Program, Downers Grove, IL, USA; Midwestern University, College of Dental Medicine-Illinois, Downers Grove, IL, USA.
Summary
This study developed a novel gelatin-methacryloyl (GelMA) hydrogel primer for dentin. While bond strength was comparable to commercial adhesives, further optimization could yield promising biomimetic dental restorative materials.
Area of Science:
- Biomaterials Science
- Dental Materials Science
- Tissue Engineering
Background:
- Gelatin-methacryloyl (GelMA) hydrogels are versatile scaffolds in tissue engineering.
- Developing functionalized GelMA hydrogels is crucial for advanced biomaterial applications.
Purpose of the Study:
- To synthesize and characterize a highly functionalized GelMA hydrogel.
- To evaluate its potential as a base for a model dentin primer in restorative dentistry.
Main Methods:
- GelMA hydrogels were synthesized with a visible-light photoinitiator (LAP).
- Properties like extrudability, degree of photo-crosslinking, water sorption/solubility/swelling, and elastic modulus were tested.
- A GelMA-based dentin primer was formulated and tested for immediate bond strength against a commercial control.
Main Results:
- Hydrogel extrudability was confirmed.
- Photopolymerization time significantly influenced crosslinking, water properties, and elastic modulus.
- The GelMA-based primer showed a slightly lower, but not statistically significant, immediate bond strength compared to the commercial control.
Conclusions:
- Optimized GelMA-based dentin primers show potential for biomimetic adhesives.
- Further development could lead to improved materials for dentin rehabilitation.
