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A laser Doppler study of gingival blood flow variations following periosteal stimulation
Pascal Ambrosini1, Sabine Cherene, Neal Miller
1Department of Periodontics, Faculty of Dental Health, University Henry Poincaré of Nancy, France.
Objectives:
Evaluation of the modifications occurring in human gingival blood flow following periosteal stimulation.
Material And Methods:
Laser Doppler was used to measure the gingival blood flow (GBF). The reproducibility of the technique was validated by comparing measures made at intervals of 1 week. Sensitivity was verified by recording GBF before and after injection of an anesthetic containing a vasoconstrictor. Finally, 12 patients were subjected to GBF measurements before and 8 days after periosteal stimulation prior to gingival grafting.
Results:
The laser Doppler accurately measured GBF. Measurements made at day 0 and day 7 were not statistically different (p=0.60). After injection of an anesthesic solution containing vasoconstrictor, the laser Doppler recorded a sharp decrease of the GBF (p=0.04). The patient that underwent periosteal stimulation showed statistically significant increases (p=0.02) in GBF before and 1 week post-stimulation.
Conclusion:
Periosteal stimulation induces significant increases in the GBF after 1 week.