Publication: Effects of bleaching on laser Doppler blood-flow signals recorded from human teeth in vitro
0
0
Issued Date
2015
Resource Type
File Type
application/pdf
ISSN
39969
Other identifier(s)
2-s2.0-84938822192
Rights Holder(s)
Scopus
Bibliographic Citation
Archives of Oral Biology. Vol 60, No.10 (2015), p.1471-1473
Suggested Citation
Ajcharanukul O., Matthews B. Effects of bleaching on laser Doppler blood-flow signals recorded from human teeth in vitro. Archives of Oral Biology. Vol 60, No.10 (2015), p.1471-1473. doi:10.1016/j.archoralbio.2015.07.013 Retrieved from: https://hdl.handle.net/20.500.14740/6106
Author(s)
Abstract
Objective: To determine if bleaching a tooth affects significantly laser Doppler recordings of pulpal blood flow that are made through the treated enamel and dentine. Design: Recordings of blood flow (flux) were made with a laser-Doppler flow meter from the crowns of 14, recently extracted, human premolars while diluted blood was pumped at three different rates through a cannula that was inserted into the pulp cavity with its tip in the coronal pulp chamber. The recordings of flux were made before and after bleaching the crown with 38% hydrogen peroxide for 30 min. The colour changes produced by bleaching were also measured with a digital spectrophotometer in 15 teeth. The effects of bleaching on both blood flow recordings and tooth colour were studied in 11 of the teeth. Results: Both before and after bleaching, there was a linear relationship between blood perfusion rate and flux. After bleaching, the flux readings increased by an average of 46%, and were significantly increased in every tooth (P < 0.001, Wilcoxon Signed Rank Test). There was no significant correlation between the changes in flux and the changes in tooth colour. Conclusion: A laser Doppler flow meter cannot be used to determine the effect of bleaching on pulpal blood flow in intact teeth. © 2015 Elsevier Ltd. All rights reserved.
Subject(s)
Hydrogen peroxide
Adult
Blood
Dental procedure
Dental pulp cavity
Dentin
Devices
Drug effects
Enamel
Human
Laser Doppler flowmetry
Premolar tooth
Procedures
Tooth crown
Tooth discoloration
Tooth pulp
Vascularization
Young adult
Adult
Bicuspid
Dental Enamel
Dental Pulp
Dental Pulp Cavity
Dentin
Humans
Hydrogen Peroxide
Laser-Doppler Flowmetry
Tooth Bleaching
Tooth Crown
Tooth Discoloration
Young Adult
Adult
Blood
Dental procedure
Dental pulp cavity
Dentin
Devices
Drug effects
Enamel
Human
Laser Doppler flowmetry
Premolar tooth
Procedures
Tooth crown
Tooth discoloration
Tooth pulp
Vascularization
Young adult
Adult
Bicuspid
Dental Enamel
Dental Pulp
Dental Pulp Cavity
Dentin
Humans
Hydrogen Peroxide
Laser-Doppler Flowmetry
Tooth Bleaching
Tooth Crown
Tooth Discoloration
Young Adult