“The K ATP channel opener pinacidil (0.1 mg/ml) significantly enhanced potassium chloride-evoked afferent … the concept that masseter afferent fibers have functional K ATP channels, however, subsequent experiments indicated that diclofenac (1 … suppressed potassium chloride-evoked afferent discharge and that pinacidil … affect hypertonic saline-evoked afferent discharge.”