Short communication
Comparison of pulpal blood flow in dog canine teeth determined by the laser Doppler and the 133xenon washout methods

https://doi.org/10.1016/0003-9969(90)90189-HGet rights and content

Abstract

Pulpal blood flow measurements by laser Doppler flowmetry were compared with those made simultaneously and on the same teeth by the 133Xe washout method. Pulpal blood flow in the resting state was 82.4 ml/min per 100 g as calculated from the fast component of the 133Xe washout, whereas laser Doppler flowmetry recorded 263 mV. The close intra-arterial (i.a.) injection of the vasoconstrictor norepinephrine (10−2–10−1 μg/kg) caused a reduction of pulpal blood flow by 20.2% with the 133Xe washout and by 9.7% with the laser Doppler flowmetry in 6 observations in 4 dogs. The laser Doppler flowmetry measurements of these norepinephrine-induced changes correlated significantly with changes measured by the 133Xe washout method as analysed by linear regression (p = 0.004).

Cited by (48)

  • Role of medullary GABA signal transduction on parasympathetic reflex vasodilatation in the lower lip

    2012, Brain Research
    Citation Excerpt :

    The probe was placed against the lower lip without exerting any pressure on the tissue. The laser-Doppler flowmeter values obtained in this way represent the blood flow in the superficial vessels in the tissue (Edwall et al., 1987; Kim et al., 1990). Electrical calibration for zero blood flow was performed for all recordings.

  • Vagal visceral inputs to the nucleus of the solitary tract: Involvement in a parasympathetic reflex vasodilator pathway in the rat masseter muscle

    2010, Brain Research
    Citation Excerpt :

    The surface of the masseter muscle was ascertained by the naked eye. The LDF values obtained in this way represent blood flow in the superficial vessels of the masseter muscle (Edwall et al., 1987; Kim et al., 1990). Electrical calibration for zero blood flow was performed for all recordings.

  • Difference between male and female rats in cholinergic activity of parasympathetic vasodilatation in the masseter muscle

    2009, Archives of Oral Biology
    Citation Excerpt :

    The masseter muscle was ascertained by the naked eye. The LDF values obtained in this way represent the blood flow in the superficial vessels of the masseter muscle.23,24 Electrical calibration for zero blood flow was performed for all recordings.

  • Circulating adrenaline released by sympathoadrenal activation elicits acute vasodilatation in the rat masseter muscle

    2009, Archives of Oral Biology
    Citation Excerpt :

    After incising the skin and identifying the muscle, the probes were placed against the muscle without exerting pressure on the tissue. The LDF values obtained by this method represent the blood flow in the superficial vessels in each tissue.16,17 Electrical calibration for zero blood flow was performed for all recordings.

  • Blood flow changes in human dental pulps when capsaicin is applied to the adjacent gingival mucosa

    2001, Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
View all citing articles on Scopus
View full text