Microvascular pressure in the dental pulp and gingiva in cats

Tønder, Karin J. Heyeraas; Næss, Grethe

doi:10.3109/00016357909004691

Cited by 15 publications

(3 citation statements)

References 20 publications

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“…The blood pressure in different vascular segments has also been measured and averaged 43 mmHg in the arterioles. In the capillaries, the pressure was reduced to 35 mmHg and further decreased in the venules to 19 mmHg, meaning that the feeding arterial pressure is low and that the blood pressure drop through the pulp is relatively small (12) compared to, for example, the skeletal muscle (13) (Fig. 2).…”

Section: Pulpal Microcirculation Under Normal Conditionsmentioning

confidence: 99%

Circulation in normal and inflamed dental pulp

Berggreen¹,

Bletsa²,

Heyeraas³

2007

Endodontic Topics

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In the pulp, arteries branch into a capillary network before they leave the pulp as venules through the apical foramina. The tissue has low compliance, as it is enclosed in dentin, and has a relatively high blood flow and blood volume. The interstitial fluid pressure (IFP) and colloid osmotic pressure are relatively high whereas the net driving blood pressure is low. The high pulsatile IFP is probably the major force for propelling lymph in the dental pulp. Vasodilation in neighboring tissue as well as arteriovenous (AV) shunts in the pulp itself can contribute to a fall in total and coronal pulpal blood flow, respectively. The pulp blood flow is under nervous, humoral, and local control. Inflammatory vascular responses, vasodilation, and increased vessel permeability induce an increase in IFP that can be followed by a temporarily impaired blood flow response. Lipopolysaccharides (LPS) from bacteria may cause endothelial activation in the pulp, leading to vasoconstriction and reduced vascular perfusion. Lymphatic vessels are identified with specific lymphatic markers in the pulp but so far, little is known about their function. Because of the special circulatory conditions in the pulp, there are several clinical implications that need to be considered in dental treatment.

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Section: Pulpal Microcirculation Under Normal Conditionsmentioning

confidence: 99%

Circulation in normal and inflamed dental pulp

Berggreen¹,

Bletsa²,

Heyeraas³

2007

Endodontic Topics

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“…This also indicates that changed blood Fig. 6 -Blood pressure distribution in relation to vessel diameter in intrapulpal vessels (solid line, data from Tender and NieSS, 1979) and in skeletal muscle vessels (broken line, data from Fronek and Zweifach, 1975). flow in neighboring tissues which are supplied by the same feeding arteries or drained by the same veins as the dental pulp, so-called parallel-coupled tissues, may alter the pre-pulpal or post-pulpal pressure drop and thereby change pulpal blood flow.…”

Section: Vascular Reactions In the Inflamed Pulpmentioning

confidence: 92%

Pulpal, Microvascular, and Tissue Pressure

1985

J Dent Res

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“…Therefore, lymphatic vessels are directly connected to surrounding collagen fibres, forcing them to resist intracellular pressure and remain open [ 19 , 20 ]. A drop in blood pressure in the pulp is relatively small [ 21 ] compared to, for example, skeletal muscles [ 22 ]. Changes in circulation in adjacent tissues, such as the periodontal ligament, gingiva and alveolar bone, can affect blood circulation in the dental pulp.…”

Section: Characteristics Of the Dental Pulpmentioning

confidence: 99%

Review on the Lymphatic Vessels in the Dental Pulp

Wiśniewska

Rybak

Szymonowicz

et al. 2021

Biology

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Despite many studies, opinions on the lymphatic system of the teeth are still incompatible. Studies using light and electron microscopy and directly using methods such as a radioisotope (radionuclide) scan and interstitial fluid pressure measurement reported incomplete results. Immunohistochemistry (IHC) plays the main role in investigating presence of the lymphatic system in dental tissues. This method uses labeled antibodies against antigens typical of lymphatic vessels. The use of appropriate staining enables the detection of antigen-antibody reaction products using a light (optical), electron or fluorescence microscope. However, these studies do not show the system of vessels, their histologic structure under physiological conditions and inflammation as well as the lymphangiogenesis process in the dental pulp. Unfortunately, there is a lack of studies associating the presence of lymphatic vessels in the dental pulp with local lymphatic nodes or large vessels outside the tooth. In the scientific and research environment, the evaluation of the lymphatic system of the teeth is problematic because it is quite difficult to clearly distinguish lymphatic vessels from small blood vessels. Despite many indications of the presence of lymphatic vessels in the pulp chamber, this problem remains open and needs further research.

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Microvascular pressure in the dental pulp and gingiva in cats

Cited by 15 publications

References 20 publications

Circulation in normal and inflamed dental pulp

Circulation in normal and inflamed dental pulp

Pulpal, Microvascular, and Tissue Pressure

Review on the Lymphatic Vessels in the Dental Pulp

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