Inflammation and dental pain in man

摘要: In the present article special interest has been focused on indicators of latent and manifest pulpal inflammation studied by psychophysical electrophysiological techniques. Intradental A-delta nerve activity was recorded from two electrodes placed in dentin labial tooth surface. The measures were obtained means direct scaling methods combination with sensory verbal descriptors. For stimulation cooling (ethyl chloride) heating (hot guttapercha) surface employed. addition, potentially algogenic substances, bradykinin histamine, administered partly exposed pulps. Hot guttapercha induced a more complex neural response pattern than ethyl chloride. all recordings responses evoked heat showed characteristic consisting three phases: an initial phase short duration (i) followed depression relative to baseline (ii) slow spontaneously emerging absence physical stimulus (iii). latter neutral event (iii) passed unnoticed subjects. light earlier experiments feline pulp it hypothesized that this third indication hyperexcitability dental pulps thus inflammation. Those subjects who experienced pulsating, dull, lingering pain (clinically diagnosed as pulpitis) poor correlation between magnitude estimates their mixed percepts total flux activity. Bradykinin histamine dull majority cases probably caused excitation C fibers. one experiment discharge could also be triggered histamine.(ABSTRACT TRUNCATED AT 250 WORDS)