Table 4.

Effect of brushing regimen on oral F⁻ retention, as measured by areas under the curve, AUC_{5–120 min} (estimating ‘total F⁻’ retained) and AUC_{30–120 min} (estimating ‘bound F⁻’ retained). Values are unadjusted mean ± standard error

Treatment	AUC5–120 min, μg × min	SE	AUC30–120 min, μg × min	SE
1,150 ppm, 45 seconds 0.5 g, 1 × 15 ml	17.4	0.358	4.9	0.057
1,150 ppm, 45 seconds 1.5 g,1 × 15 ml	32.4	0.306	8.7	0.049
1,150 ppm, 60 seconds 0.5 g,1 × 15 ml	16.6	0.301	4.9	0.051
1,150 ppm, 60 seconds 1.5 g,1 × 15 ml	34.7	0.324	8.9	0.053
1,150 ppm, 120 seconds 0.5 g, 1 × 15 ml	19.5	0.419	6.3	0.066
1,150 ppm, 120 seconds 1.5 g, 1 × 15 ml	33.9	0.292	10.0	0.046
1,150 ppm, 180 seconds 1.5 g, 1 × 15 ml	33.1	0.355	10.0	0.047
1,150 ppm, 60 seconds 1.5 g,3 × 15 ml	20.0	0.285	7.2	0.046
250 ppm, 60 seconds 1.5 g, 1 × 15 ml	9.3	0.318	3.4	0.050

SE, standard error.