The effect of veratrine and aconitine on the excitability of sensory units in the tooth of the cat

摘要: Intradental sensory nerve impulse activity was recorded by means of electrodes inserted into dentinal cavities in the tooth cat. Impulses different amplitudes recorded. Local application aconitine (10(-3) g/ml) and veratrine induced activity. A rapid increase temperature surface to 45-47 degrees C, which is known induce fluid movements tubuli, did not any However, after pretreatment a cavity with gave rise Steady state brief local influenced tooth; during impulses low amplitude increased frequency while high were blocked. Furthermore, reduced pressure applied exposed dentin, also induces Thus units are stimulated alkaloids excite mechanoreceptors their excitability. It therefore suggested that intradental endings mechanosensitive structures.