Potassium channels in dental pulp nerve fibers

Potassium channels in dental pulp nerve fibers are a heterogeneous group of voltage-gated (KV), two-pore (K2P, e.g., TREK-1, TRESK), and calcium-activated (KCa) potassium-selective ion channels that control neuronal excitability by regulating the outflow of potassium ions. These channels are expressed in the sensory nerve fibers (primarily from the trigeminal nerve) that innervate the dental pulp, where they contribute to pain perception and modulation. Experimental studies have demonstrated functional expression of these channels in pulpal nerves and odontoblasts, implicating them in mechanical, thermal, and inflammatory pain states in teeth. Although not currently targeted by specific dental therapeutics, they represent a potential avenue for novel dental analgesic drug development aimed at controlling dental pain and hypersensitivity by modifying neuronal excitability via potassium channel modulation. Note on specificity: The target as named ("Potassium channel in dental pulp nerve fibers") is non-specific. Several subtypes are present (e.g., Kv1.4, TREK-1/KCNK2, TRESK/KCNK18) with differing physiological roles. For structured data, it is recommended to specify the potassium channel subtype (e.g., "TREK-1 potassium channel" or "Kv1.4 potassium channel in dental pulp") for precision.

Other names

Voltage-gated potassium channel in dental pulpK2P in dental pulpTREK-1 in dental pulpKV channel in dental pulp

Inhibitors block potassium efflux, increasing neuronal excitability and potential for pain signaling; Openers/hyperpolarizing agents enhance potassium efflux, stabilizing membrane and reducing excitability (pain suppression)