Publication:
The postural autonomic regulation of pulpal blood flow

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Issued Date

2013

Resource Type

Article

File Type

application/pdf

ISSN

220345

DOI

10.1177/0022034512469025

Other identifier(s)

2-s2.0-84872378090

Rights Holder(s)

Scopus

Bibliographic Citation

Journal of Dental Research. Vol 92, No.2 (2013), p.156-160

Suggested Citation

Ajcharanukul O., Chunhacheevachaloke E., Vorachart P., Chidchuangchai W. The postural autonomic regulation of pulpal blood flow. Journal of Dental Research. Vol 92, No.2 (2013), p.156-160. doi:10.1177/0022034512469025 Retrieved from: https://hdl.handle.net/20.500.14740/6713

Title

The postural autonomic regulation of pulpal blood flow

Author(s)

Ajcharanukul O.
 Chunhacheevachaloke E.
 Vorachart P.
 Chidchuangchai W.

Abstract

Evidence suggests that postural changes in systemic blood pressure may significantly affect blood flow in the dental pulp. This in vivo study examined the responses of pulpal perfusion, systemic blood pressure, and heart rate to postural changes in humans. The experiments were done on 21 premolars in 16 participants aged 20-31 yrs. Pulpal blood flow recordings were measured by means of a laser Doppler Flowmeter. A blood pressure monitor was used to record blood pressure and heart rate. All measurements were simultaneously recorded for 1 min, 5 min after participants made postural changes. Changing from supine to standing caused a significant reduction in pulpal perfusion, while heart rate and diastolic blood pressure increased significantly. A significant non-linear relationship was found between percentage changes in pulpal perfusion and heart rate resulting from standing up. We speculate that when patients arise from the supine position, the shift in venous blood to the legs transiently (2-10 sec) lowers venous return and cardiac output, causing less inhibition of the vasomotor center, which, in turn, results in increased heart rate and blood pressure, but a decrease in pulpal blood flow. These results suggest that pulpal blood flow is affected by postural change, presumably via the autonomic nervous system. © 2012 International & American Associations for Dental Research.

Subject(s)

Adrenergic system
 Adult
 Article
 Autonomic nervous system
 Blood flow
 Blood pressure
 Body posture
 Comparative study
 Female
 Heart output
 Heart rate
 Human
 Instrumentation
 Laser Doppler flowmetry
 Leg
 Male
 Physiology
 Premolar tooth
 Supine position
 Time
 Tooth pulp
 Vascularization
 Adult
 Autonomic Nervous System
 Bicuspid
 Blood Pressure
 Cardiac Output
 Dental Pulp
 Female
 Heart Rate
 Humans
 Laser-Doppler Flowmetry
 Leg
 Male
 Posture
 Regional Blood Flow
 Supine Position
 Time Factors
 Vasomotor System
 Young Adult

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URI

https://hdl.handle.net/20.500.14740/6713

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Scopus: Year 1983-2021

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