Influence of Sympathetic Nerve Stimulation on Flow Velocity in Pulpal Vessels

Authors

  • Donald Scott The Institute of Dentistry, University of Turku, Finland; The Department of Physiology, University of Pennsylvania Medical School, Philadelphia, Pennsylvania, USA; The Department of Pharmacology, Karolinska Institutet, Stockholm, Sweden
  • Arje Scheinin The Institute of Dentistry, University of Turku, Finland; The Department of Physiology, University of Pennsylvania Medical School, Philadelphia, Pennsylvania, USA; The Department of Pharmacology, Karolinska Institutet, Stockholm, Sweden
  • Sara Karjalainen The Institute of Dentistry, University of Turku, Finland; The Department of Physiology, University of Pennsylvania Medical School, Philadelphia, Pennsylvania, USA; The Department of Pharmacology, Karolinska Institutet, Stockholm, Sweden
  • Lennart Edwall The Institute of Dentistry, University of Turku, Finland; The Department of Physiology, University of Pennsylvania Medical School, Philadelphia, Pennsylvania, USA; The Department of Pharmacology, Karolinska Institutet, Stockholm, Sweden

DOI:

https://doi.org/10.3109/00016357208997464

Keywords:

Sympathetic nervous system, Dental pulp, Blood flow velocity, Blood vessels

Abstract

Using a modification of the flying spot method for estimation of flow velocity in micro vessels, comparative observations were made on arterioles, venules and capillaries in the pulp of the rat incisor by vital microscopy. It was found that stimulation of the sympathetic nerves to the tooth, either at its apex or in the cervical sympathetic trunk, produced marked reduction of flow which was followed by a return to normal velocities at the cessation of stimulation. Direct stimulation of the sympathetic trunk produced very rapid reduction of flow velocity. Changes were also observed in response to administration of anesthetics and other procedures.

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Published

1972-01-01

Issue

Vol. 30 No. 2 (1972): Acta Odontologica Scandinavica

Section

Articles