Change in amount of total bacteria in tongue coating following tongue cleaning. Error bars indicate 95% confidential intervals. Values shown in closed circles are averages of the amount of total bacteria expressed as logarithm values of the genome weight of 16S rRNA universal in whole collected tongue coating samples (A) following tongue cleaning and (B) without tongue cleaning. *Statistically significant, multiple paired t test with Bonferroni adjustment.
Matsui et al. BMC Oral Health 2014 14:4 doi:10.1186/1472-6831-14-4