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Related Experiment Videos

Do primary afferents from tooth-pulp cross the midline?

B Matthews, S J Lisney

    Brain Research
    |December 15, 1978
    PubMed
    Summary
    This summary is machine-generated.

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    This study investigated nerve pathways in cat canine teeth. Researchers found no evidence of nerve fibers crossing the midline from the dental pulp.

    Area of Science:

    • Neuroscience
    • Dental Physiology

    Background:

    • The trigeminal nerve innervates the teeth and face.
    • Understanding the central and peripheral pathways of dental pulp afferents is crucial for pain management.

    Purpose of the Study:

    • To investigate the central projections of canine tooth pulp afferent fibers.
    • To determine if pulpal nerve fibers cross the midline of the nervous system.

    Main Methods:

    • Compound action potentials were recorded from feline canine pulps.
    • Stimulation of the inferior dental nerve, trigeminal ganglion, and brain stem was performed.
    • Recordings were also made from the inferior dental nerve during canine pulp stimulation.

    Main Results:

    • Electrical stimulation of the inferior dental nerve, trigeminal ganglion, or brain stem evoked responses in the canine pulp.

    Related Experiment Videos

  • Stimulation of the canine pulp evoked responses in the inferior dental nerve.
  • No evidence was found to suggest that pulpal nerve fibers cross the midline.

    • Conclusions:

    • Dental pulp afferent fibers do not appear to cross the midline.
    • Neural pathways from the canine pulp are primarily ipsilateral.