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The International Journal of Adult Orthodontics & Orthogathic Surgery
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International Journal of Adult Orthodontics and Orthognathic Surgery

Year 1995
Volume 10 , Issue 4

Pages: 247 - 254

Measurement of pulpal blood flow in humans using laser Doppler flowmetry: A technique allowing stability and repeatability of pulpal blood flow measurement during surgical manipulations


This study was undertaken to validate the repeatability of pulpal blood flow in human teeth with the laser Doppler flowmetry technique using a repeatable method of attachment of the laser Doppler probe. The variation in laser Doppler flowmetry measurments was evaluated over time periods that ranged from hours to days. In a prospective study, the pulpal blood flow was recorded from a maxillary central incisor (randomly selected) at a site directly gingival to the orthodontic bracket of three subjects. Measurements were made eight times over a 2-week period and every 30 minutes over four hours for eight recordings. The results indicated that there was only a slight difference between the temporal variability of the laser Doppler measuremnts over the course of 4 hours (intraday variability) or 2 weeks (interday variability). Furthermore, it appeared that subjects varied in their mean value recordings and may have varied widely in their respective signal-to-noise ratios.


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