Document Detail

An evaluation of laser Doppler readings obtained from human gingival sulci.
MedLine Citation:
PMID:  7776160     Owner:  NLM     Status:  MEDLINE    
A small laser doppler probe with an outside diameter comparable to a conventional periodontal probe (0.5 mm) was developed. The objectives of this investigation were to determine if intrasulcular laser doppler readings (LDR): 1) are reproducible; 2) can detect vascular changes associated with trauma from probe placement; 3) were reproducible when obtained with a stabilizing stent or without a stent; and 4) could detect vascular changes following the injection of a local anesthetic with vasoconstrictor. Nine adult volunteers with clinically healthy gingiva were evaluated for 30 second intervals at 5 sites. Baseline LDR were obtained twice at each site utilizing an acrylic stent to stabilize the probe and once without the stent (trial 1). All LDR were repeated at one month (trial 2) and again two months (trial 3) after baseline. One additional reading per subject was obtained following the administration of a local anesthetic with a vasoconstrictor during the second trial. Inter-trial comparisons found no significant difference in mean LDR between any of the three observation times. However, intra-trial comparison between the first and second LDR revealed an increase of approximately 50% in mean LDR. A 3-fold reduction in mean LDR (P < 0.001) was noted following the administration of a local anesthetic with vasoconstrictor. Intra-class correlation coefficients for stent stabilized LDR were 0.51 (P < 0.01) and 0.63 (P < 0.01) while intra-class correlation for hand held LDR was 0.40 (P < 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)
J E Hinrichs; L L LaBelle; D Aeppli
Publication Detail:
Type:  Clinical Trial; Comparative Study; Controlled Clinical Trial; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of periodontology     Volume:  66     ISSN:  0022-3492     ISO Abbreviation:  J. Periodontol.     Publication Date:  1995 Mar 
Date Detail:
Created Date:  1995-07-10     Completed Date:  1995-07-10     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8000345     Medline TA:  J Periodontol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  171-6     Citation Subset:  D; IM    
University of Minnesota, Division of Periodontology, Minneapolis, USA.
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MeSH Terms
Anesthetics, Local / adverse effects
Dental Instruments / standards*
Diagnosis, Oral / instrumentation
Gingiva / blood supply*
Laser-Doppler Flowmetry / instrumentation*
Microcirculation / drug effects
Periodontics / instrumentation*
Reproducibility of Results
Grant Support
Reg. No./Substance:
0/Anesthetics, Local

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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