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Updated: Jan 31, 2026
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Multiplexed Single-molecule Force Proteolysis Measurements Using Magnetic Tweezers
Published on: July 25, 2012
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The Self-Assembling Peptide P11-4 Prevents Collagen Proteolysis in Dentin
J P de Sousa1, R G Carvalho2, L F Barbosa-Martins1
11 Department of Pediatric Dentistry, Piracicaba Dental School, University of Campinas-UNICAMP, Campinas, SP, Piracicaba, São Paulo, Brazil.
Journal of Dental Research
|January 8, 2019
Summary
Self-assembling peptide P11-4 enhances dentin remineralization by interacting with collagen, improving bonding strength and resistance to degradation. However, these benefits diminish over time, requiring further investigation for long-term stability.
Area of Science:
- Restorative Dentistry
- Biomaterials Science
- Dental Materials
Background:
- Developing regenerative approaches for caries lesions is crucial in restorative dentistry.
- Self-assembling peptide P11-4 shows promise for remineralization but its effect on dentin is unknown.
Purpose of the Study:
- To investigate P11-4's interaction with dentin's organic components.
- To evaluate P11-4's impact on proteolytic activity, bonding interface mechanics, and nanoleakage in artificial caries-affected dentin.
Main Methods:
- Surface plasmon resonance and atomic force microscopy were used to study P11-4-collagen interactions.
- Microtensile bond strength and proteolytic activity assays were performed on treated dentin specimens.
Main Results:
- P11-4 binds to collagen type I, increasing fiber width and resistance to collagenases.
- Immediate P11-4 treatment enhanced bond strength and reduced proteolytic activity at the hybrid layer.
- These positive effects showed a decrease after 6 months of water storage.
Conclusions:
- P11-4 interacts with collagen type I, enhancing its resistance to proteolysis.
- P11-4 improves the stability of the hybrid layer in artificial caries-affected dentin, though long-term effects require further study.
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