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Structure of PeptidoglycanPeptidoglycan is a vital structural component of the bacterial cell wall, providing mechanical strength and shape to the cell. It consists of repeating units of two sugars—N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM)—linked by β-1,4 glycosidic bonds. These sugar chains are cross-linked by short peptide chains, forming a mesh-like polymer that surrounds the bacterial plasma membrane.Cytoplasmic Phase – Precursor SynthesisPeptidoglycan...
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A peptide bond covalently attaches amino acids through a dehydration reaction. One amino acid's carboxyl group and another amino acid's amino group combine, releasing a water molecule. The resulting bond is the peptide bond. The products that such linkages form are peptides. As more amino acids join this growing chain, the resulting chain is a polypeptide. Each polypeptide has a free amino group at one end. This end has the N-terminal, or the amino-terminal, and the other end has a free...
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Development of Amelogenin-chitosan Hydrogel for In Vitro Enamel Regrowth with a Dense Interface
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Engineered Peptide Repairs Defective Adhesive-Dentin Interface.

Qiang Ye1, Paulette Spencer2, Esra Yuca1

  • 1Bioengineering Research Center (BERC), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA.

Macromolecular Materials and Engineering
|October 24, 2017
PubMed
Summary
This summary is machine-generated.

A novel peptide-based method remineralizes tooth-composite interfaces, preventing recurrent decay. This approach strengthens the adhesive bond, enhancing dental restoration longevity.

Keywords:
adhesive/dentin interfacecomposite restorative materialsmaterial–tissue interfacemineralizationpeptides

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Area of Science:

  • Biomaterials Science
  • Dental Materials
  • Nanotechnology

Background:

  • Dental composite restoration failure is often caused by recurrent decay at the tooth-composite interface.
  • The adhesive/dentin (a/d) interface integrity is crucial for restoration longevity, but it degrades in vivo.
  • Current methods lack effective strategies to repair or prevent degradation at this critical interface.

Purpose of the Study:

  • To develop a peptide-based strategy for remineralizing deficient dentin matrices at the adhesive/dentin interface.
  • To investigate the self-assembly and mineralization capabilities of engineered peptides at the a/d interface.
  • To enhance the durability and longevity of dental composite restorations.

Main Methods:

  • Development and application of self-assembling peptides designed to anchor at the a/d interface.
  • Induction of calcium-phosphate remineralization within the dentin matrix using the anchored peptides.
  • Analysis of adhesive, collagen, and mineral distribution using micro-Raman spectroscopy and fluorescence microscopy.

Main Results:

  • Successful remineralization of deficient dentin matrices was achieved throughout the adhesive/dentin interface.
  • Homogeneous distribution of mineral within the remineralized dentin matrix was confirmed.
  • The peptide-based approach demonstrated effective integration and mineralization at the biomaterial-tissue interface.

Conclusions:

  • Peptide-based remineralization is a viable strategy to repair and strengthen the adhesive/dentin interface.
  • This technology offers a promising approach to prevent recurrent decay and improve dental restoration outcomes.
  • The developed method represents an enabling technology for designing robust integrated biomaterial-tissue interfaces.