Dentin desensitization

**Dentin desensitization** describes therapeutic approaches to alleviate pain from exposed dentin, commonly experienced as sharp, transient dental pain (dentin hypersensitivity) due to stimuli like thermal, chemical, tactile, or electrical triggers[4][3]. The most accepted mechanism underlying dentin hypersensitivity is the **hydrodynamic theory**, which proposes that fluid movement within the open dentinal tubules, in response to external stimuli, excites pulpal nerves resulting in pain[3][1][4]. Treatments focus on either physically occluding the tubules to reduce fluid movement or decreasing the excitability of intra-dental nerve fibers—commonly using potassium salts, fluoride, calcium phosphate, arginine-based compounds, or adhesives and resins[1][2][5]. Therefore, "dentin desensitization" is a therapeutic endpoint, not a single molecular target, and should not be listed as a druggable target in molecular pharmacology.

Other names

Dentin hypersensitivity (DH, DHS)Dentin sensitivitySensitive dentinDental hypersensitivity

Occlusion of dentinal tubules (physical blockage to limit fluid movement)[1][4] Desensitization of nerve activity by potassium salts (reducing excitability of A-fibers)[5][1] Mineralization and precipitation (e.g., arginine/calcium carbonate facilitating occlusion)[1] Use of adhesives or resins to physically seal tubules[2]