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Effect of mechanical stimulation by tooth brushing on oxygen tension in dog gingiva
1Department of Preventive Dentistry, Osaka University Faculty of Dentistry, Japan.
Archives of Oral Biology
|November 1, 1994
Abstract:
To determine oxygen tension (pO2) in gingival tissue, an oxygen micro-electrode with a membrane-coated Pt needle was inserted into the gingiva of 12 dogs. Teeth were brushed using a modified Bass technique for 10 s under 200 g pressure. pO2 increased and reached a maximum 15 min after brushing, then gradually returned to the baseline. A significant increase in pO2 persisted for approx. 1 h. These findings suggest that short-term stimulation by tooth brushing increases oxygen tension in the gingiva.