Viscosity of whole saliva.
This study investigates within-subject variations and associations of salivary viscosities and flow rates in a test panel of healthy adults. After several practice sessions, unstimulated and stimulated whole saliva samples were collected 5 times daily (at 0800, 1100, 1400, 1700, and 2000 h) from 30 university students. There was a significant within-subject variation in viscosity and flow rate of unstimulated saliva (P<0.001). Intra-item correlations were significantly different for salivary flow rates (r= 0.82 for unstimulated, r= 0.88 for stimulated, P< 0.001) and viscosity of unstimulated saliva (r= 0.54, P< 0.05), but viscosity of stimulated saliva was different in this respect. Our results indicate that there is a significant within-subject variation in viscosity of unstimulated saliva.
Department of Oral and Dental Diseases, Faculty of Medicine, University of Kuopio, Finland.
P J
PJ
Rantonen
J H
JH
Meurman
D000328:Adult; D000704:Analysis of Variance; D016001:Confidence Intervals; D005260:Female; D006801:Humans; D008297:Male; D010865:Pilot Projects; D015203:Reproducibility of Results; D012399:Rotation; D012463:Saliva / Q000378:metabolism / Q000502:physiology*; D012636:Secretory Rate; D013314:Stress, Mechanical; D014783:Viscosity