Dentin tubule occlusion

Dentin tubule occlusion refers to the process of sealing or blocking open dentinal tubules within the dentin of teeth, a method widely used to treat dentin hypersensitivity[2][3][4]. The principle is based on the hydrodynamic theory, where pain arises from fluid movement inside these microscopic tubules that stimulates nerve fibers in the dental pulp when exposed to external stimuli such as temperature changes or touch[1][2]. By occluding the tubules with materials like calcium carbonate, hydroxyapatite, bioactive glass, or silver diammine fluoride, fluid flow is interrupted, reducing stimulation of the nerves and alleviating pain[2][3][4][6][7]. Occlusion may be achieved through topical agents, restorative cements, or laser therapy. While effective, the occlusion can sometimes be reversed (e.g., after acid challenge), and aged dentin with occluded tubules may have lower fracture resistance due to changes in the mineral and organic composition[5][6]. Dentin tubule occlusion is a strategy, not a discrete molecular target, and should not be classified as a protein, receptor, or enzyme.

Other names

Dentinal tubule occlusionTubule blockingDentin sealing

Physical blockage of dentinal tubules, Precipitation of minerals within tubules, Formation of mineral plugs, Deposition of bioactive materials, Closure/fusion by laser or chemical agents