Blood flow in denture-supporting maxillary mucosa in response to simulated mastication by loading
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概要
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Purpose: The purpose of this study was to determine the effect of number of chewing strokes on change in blood flow in denture-supporting maxillary mucosa.Methods: Subjects consisted of 11 healthy dentate men. Mastication was simulated by intermittent loading (10 N, 1/0.75 Hz) on a lateral area of the hard palate using a 2-cm2 test plate. Loading duration was set at 1, 4, 8 or 12 min (80, 320, 640 or 960 chewing strokes). A non-contact laser Doppler blood flow meter was used to determine change in blood flow and time taken for recovery to 110% of the pre-loading value. Mean blood flow at pre-loading and at each duration of intermittent loading were compared using a repeated measures ANOVA (α = 0.05) and the Dunnett test. Recovery times for each loading duration were compared using a one-way ANOVA (α = 0.05) and the Bonferroni-test.Results: Three subjects showed no increase in mean blood flow with loading. Eight subjects consistently showed an increase in mean blood flow during intermittent loading relative to at pre-loading. Duration of loading yielded no significant difference in mean blood flow. Significant differences were observed in recovery time between at after 8 min loading and at after the other 3 loading (1, 4, and 12 min loading) durations.Conclusion: Number of simulated chewing strokes showed no influence on mean blood flow during intermittent loading in denture-supporting mucosa. It did, however, affect recovery time taken for blood flow to return to its pre-loading level.
- 社団法人 日本補綴歯科学会の論文
著者
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Sakurai Kaoru
Department Of Cardiology Disaster Medical Center
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UEDA Takayuki
Department of Civil Engineering The University of Tokyo
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Okada China
Department of Removable Prosthodontics and Gerodontology, Tokyo Dental College
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