title: Degeneration of unmyelinated axons in the dental root canal induced by 6-OH-dopamine.
abstract: The pulpal nerve fibres of feline incisors were examined ultrastructurally after i.v. administration of 6-OH-dopamine. The presence of degenerating unmyelinated fibres at this site provides conclusive morphological evidence that sympathetic fibres enter the dental pulp.
mesh_terms: D000818:Animals; D002415:Cats; D003782:Dental Pulp / Q000294:innervation*; D003786:Dental Pulp Cavity / Q000294:innervation; D006892:Hydroxydopamines / Q000494:pharmacology*; D007180:Incisor / Q000294:innervation; D008334:Mandible; D009410:Nerve Degeneration / Q000187:drug effects; D012583:Schwann Cells / Q000187:drug effects; D013564:Sympathetic Nervous System / Q000187:drug effects*
chemical_list: D006892:Hydroxydopamines