Tooth mineral and dentin collagen matrix

The tooth mineral and dentin collagen matrix represent the primary structural components of the human tooth, consisting of an inorganic mineral phase and an organic protein scaffold (StatPearls, 2023). The mineral phase is predominantly composed of hydroxyapatite crystals, while the organic matrix is roughly 90% Type I collagen interspersed with non-collagenous proteins like dentin sialophosphoprotein that regulate mineralization (UniProt, 2024). This complex structure provides the necessary hardness for mastication while maintaining the toughness required to resist fracture. In disease states such as dental caries, organic acids produced by bacteria lead to the demineralization of the hydroxyapatite, eventually exposing the collagen matrix to enzymatic degradation by host-derived matrix metalloproteinases (PubMed, PMID: 22025576). Therapeutic interventions target this matrix by promoting the precipitation of new mineral, such as fluorapatite, or by using cross-linking agents and protease inhibitors like chlorhexidine to preserve the integrity of the collagen scaffold (Journal of Dental Research, 2011). Understanding the interaction between these components is critical for developing effective restorative materials and treatments for dentin hypersensitivity (PubChem, 2024).

Other names

Dentin matrixDental hydroxyapatiteTooth mineralDentin collagenCalcified dental tissue

Promotion of remineralization through the formation of acid-resistant fluorapatite, inhibition of hydroxyapatite dissolution, and stabilization of the collagen matrix via cross-linking or inhibition of endogenous matrix metalloproteinases (MMPs) (PubMed, PMID: 30635318).