International Journal of Dentistry / 2010 / Article / Fig 4

Research Article

Clinical Implications of Power Toothbrushing on Fluoride Delivery: Effects on Biofilm Plaque Metabolism and Physiology

Figure 4

Metabolic activity in interproximal plaque. (a) In 10% saliva the plaque was anaerobic below a depth of 200 μm. (b) The addition of 10% sucrose reduced the pH from neutral to 4.2 within the dental plaque biofilm. NaF increased the pH by approximately 1 unit suggesting that acid fermentation had been inhibited. (c) N2O production in the biofilm demonstrated that the interproximal plaque was denitrifying. Addition of sucrose stimulated denitrification while F suppressed it.

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