Stannous ion-occluded dentin tubule

The target is not a molecule or receptor, but the open dentin tubules exposed by enamel loss or gingival recession, which act as conduits for fluid movement. This fluid movement within tubules triggers pain via the hydrodynamic mechanism. Stannous ions (Sn²⁺), most commonly administered as stannous fluoride, deposit mineral precipitates within and on the surface of these tubules, occluding them and physically blocking fluid motion. This occlusion mechanism interrupts the activation of nerves in the pulp, providing significant relief from dentin hypersensitivity. Stannous ions further contribute by forming acid-resistant, protective layers of tin- and fluoride-containing minerals, enhancing durability of the occlusion and providing anti-erosive and antibacterial benefits[1][4][5][9]. Note: The submitted "target" is not a singular protein, enzyme, or receptor; it refers to the physical process and substrate (open dentin tubule) that is modified by therapy. This is not considered a molecular therapeutic target in the classic sense but rather a physical substrate for therapeutic action. Most authoritative sources refer to the mechanism as "dentinal tubule occlusion by stannous fluoride/ions," not as a discrete target molecule[1][4][9].

Other names

Dentin tubuleDentinal tubuleStannous fluoride-treated dentinOccluded dentin tubule

Occlusion of open dentin tubules by precipitation of stannous-containing mineral complexes (e.g., CaF₂, Ca(SnF₃)₂, Sn₃F₃PO₄); Decreased movement of dentinal fluid, reducing hydrodynamic activation of nerves responsible for pain