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J Physiol. Nov 1978; 284: 19–36.
PMCID: PMC1282806

Some anatomical and electrophysiological properties of tooth-pulp afferents in the cat.


1. The responses of nerves which could be excited by electrical stimulation of the canine tooth-pulp were recorded from the trigeminal ganglion. 2. Preliminary experiments showed that the responses of mandibular canine pulpal afferents were recorded from the postero-lateral part of the trigeminal ganglion whereas the responses of maxillary canine pulpal afferents were recorded from the central part of the ganglion. 3. The conduction velocity differed in various parts of these nerves; the conduction velocity inside the tooth tended to be slower than that from the tooth to the trigeminal ganglion; the mean conduction velocity in the part of the nerve peripheral to the trigeminal ganglion was faster than that in the part central to the ganglion, and in the central part the conduction velocity decreased caudally. 4. Collision experiments combining tooth stimulation and stimulation of sites in the trigeminal sensory nuclear complex were carried out to investigate the projections of individual pulpal afferents. 5. The results of these experiments showed that some tooth-pulp afferents bifurcate and project to both the main sensory nucleus and the nucleus caudalis. For other pulpal afferents only a projection to the main sensory nucleus or the nucleus caudalis could be demonstrated. 6. Pulpal afferents that bifurcated had faster conduction velocities than those for which no bifurcation could be shown.

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Selected References

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  • Arvidsson J. Location of cat trigeminal ganglion cells innervating dental pulp of upper and lower canines studied by retrograde transport of horseradish peroxidase. Brain Res. 1975 Nov 28;99(1):135–139. [PubMed]
  • Beasley WL, Holland GR. A quantitative analysis of the innervation of the pulp of the cat's canine tooth. J Comp Neurol. 1978 Apr 1;178(3):487–494. [PubMed]
  • Boudreau JC, Bradley BE, Bierer PR, Kruger S, Tsuchitani C. Single unit recordings from the geniculate ganglion of the facial nerve of the cat. Exp Brain Res. 1971 Nov 30;13(5):461–488. [PubMed]
  • BROOKHART JM, LIVINGSTON WK, HAUGEN FP. Functional characteristics of afferent fibers from tooth pulp of cat. J Neurophysiol. 1953 Nov;16(6):634–642. [PubMed]
  • Fields RW, Tacke RB, O'Donnell RP, Savara BS. Afferent excitability compared using pulsating versus constant direct current electroanalgesia in cat tooth pulp. Exp Neurol. 1976 Nov;53(2):386–398. [PubMed]
  • Franz DN, Iggo A. Conduction failure in myelinated and non-myelinated axons at low temperatures. J Physiol. 1968 Dec;199(2):319–345. [PMC free article] [PubMed]
  • GRAF W, HJELMQUIST U. Caliber spectra of dental nerves in dogs and cattle. J Comp Neurol. 1955 Oct;103(2):345–353. [PubMed]
  • Greenwood F, Horiuchi H, Matthews B. Electrophysiological evidence on the types of nerve fibres excited by electrical stimulation of teeth with a pulp tester. Arch Oral Biol. 1972 Apr;17(4):701–709. [PubMed]
  • Horch KW, Burgess PR, Whitehorn D. Ascending collaterals of cutaneous neurons in the fasciculus gracilis of the cat. Brain Res. 1976 Nov 19;117(1):1–17. [PubMed]
  • Horiuchi H, Matthews B. Evidence on the origin of impulses recorded from dentine in the cat. J Physiol. 1974 Dec;243(3):797–829. [PMC free article] [PubMed]
  • Horrobin DF. The lateral cervical nucleus of the cat; an electrophysiological study. Q J Exp Physiol Cogn Med Sci. 1966 Oct;51(4):351–371. [PubMed]
  • HUBEL DH. Single unit activity in lateral geniculate body and optic tract of unrestrained cats. J Physiol. 1960 Jan;150:91–104. [PMC free article] [PubMed]
  • Johnsen DC, Karlsson UL. Electron microscopic quantitations of feline primary and permanent incisor innervation. Arch Oral Biol. 1974 Aug;19(8):671–678. [PubMed]
  • Lisney SJ. Measurement of refractory period in collision experiments [proceedings]. J Physiol. 1978 Apr;277:33P–34P. [PubMed]
  • Lisney SJ, Matthews B. Branched afferent nerves supplying tooth-pulp in the cat. J Physiol. 1978 Jun;279:509–517. [PMC free article] [PubMed]
  • Merrill EG, Ainsworth A. Glass-coated platinum-plated tungsten microelectrodes. Med Biol Eng. 1972 Sep;10(5):662–672. [PubMed]
  • WAGERS PW, SMITH CM. Responses in dental nerves of dogs to tooth stimulation and the effects of systemically administered procaine, lidocaine and morphine. J Pharmacol Exp Ther. 1960 Sep;130:89–105. [PubMed]
  • Zucker E, Welker WI. Coding of somatic sensory input by vibrissae neurons in the rat's trigeminal ganglion. Brain Res. 1969 Jan;12(1):138–156. [PubMed]

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