Dental and restorative substrates

Dental and restorative substrates refer to the biological tissues of the tooth—including enamel, dentin, and cementum—as well as the synthetic materials used in dental reconstruction, such as composite resins, ceramics, and glass ionomers (NIH, 2022). These substrates are primarily composed of hydroxyapatite crystals and collagen matrices, providing the mechanical strength necessary for mastication and protecting the sensitive inner pulp from external stimuli. They do not function as traditional pharmacological receptors; instead, they act as physical and chemical platforms for therapeutic intervention. Drugs such as fluoride promote the remineralization of these surfaces to prevent caries by forming more acid-resistant fluorapatite (PubChem, 2024). Antimicrobial agents like chlorhexidine bind to these substrates to reduce plaque formation and bacterial colonization. In restorative dentistry, the chemical and micromechanical interaction between adhesives and the dentin substrate is vital for the longevity of fillings. Understanding the properties of these substrates is essential for managing conditions like dental hypersensitivity, where tubule occlusion is the primary goal. Overall, these substrates represent the structural environment where dental diseases occur and where pharmacological and material-based treatments are applied.

Other names

Tooth structureDental hard tissuesRestorative materialsEnamel and dentinDental biomaterials

Therapeutic agents interact with these substrates through remineralization of hydroxyapatite, antimicrobial adsorption to surfaces, or physical occlusion of dentinal tubules to mitigate sensitivity (StatPearls, 2023).