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The evidence for sympathetic vasoconstrictor nerves in the pulp is robust, and there is convincing support for the contention that these nerves play a physiological role, operating via release of noradrenaline and neuropeptide Y. However, there is no significant functional evidence in support of sympathetic beta-adrenoceptor-mediated vasodilation in the pulp. The local control of blood flow involves a subset of intradental sensory nerves. By virtue of their neuropeptide content, these afferent fibers cause vasodilation and inhibit sympathetic vasoconstriction in response to painful stimulation of the tooth. Such locally governed control may serve to meet immediate demands of the pulp tissue. A locally triggered reflex activation of sympathetic nerves in the pulp may modulate this control and limit its magnitude. Thus, there are competitive interactions between local and remote vascular controls which may be put out of balance in the injured and inflamed dental pulp. <\/jats:p>","DOI":"10.1177\/10454411960070020401","type":"journal-article","created":{"date-parts":[[2009,1,9]],"date-time":"2009-01-09T00:40:32Z","timestamp":1231461632000},"page":"159-171","source":"Crossref","is-referenced-by-count":89,"title":["Neural Control of Pulpal Blood Flow"],"prefix":"10.1177","volume":"7","author":[{"given":"L.","family":"Olgart","sequence":"first","affiliation":[{"name":"Department of Physiology and Pharmacology, Division of Pharmacology, Karolinska Institutet, S-171 77 Stockholm, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[1996,4,1]]},"reference":[{"key":"atypb1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1748-1716.1992.tb09443.x"},{"key":"atypb2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1748-1716.1993.tb09580.x"},{"key":"atypb3","doi-asserted-by":"crossref","unstructured":"Akai M., Wakisaka S. 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