Relationship between amounts of total bacteria and F. nucleatum in dental plaque. Scatter plots of the amounts of total bacteria (X-axes) and F. nucleatum (Y-axes) in whole collected dental plaque samples expressed as logarithm values of the genome weight (A) in case with tongue cleaning and (B) without tongue cleaning. Symbols are the same as in Figure 4. The correlation coefficients in subjects with tongue cleaning were 0.570, 0.849, and 0.870 at baseline, and on days 3 and 10, respectively, while those in subjects without tongue cleaning were 0.952, 0.868, and 0.745, respectively.
Matsui et al. BMC Oral Health 2014 14:4 doi:10.1186/1472-6831-14-4