Effect of mechanical stimulation by tooth brushing on oxygen tension in dog gingiva.
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.
Tanaka
M
M
Department of Preventive Dentistry, Osaka University Faculty of Dentistry, Japan.
Hanioka
T
T
Ojima
M
M
Hori
T
T
Shizukuishi
S
S
D000818:Animals; D004285:Dogs; D005881:Gingiva / Q000098:blood supply* / Q000378:metabolism; D008334:Mandible; D010100:Oxygen / Q000378:metabolism*; D010101:Oxygen Consumption; D010313:Partial Pressure; D010812:Physical Stimulation; D014099:Toothbrushing
D010100:Oxygen