Results
Brushing force
Mean brushing forces of different sextants and sites are presented in Tables 2 (upper jaw)
and 3 (lower jaw). Considering all sextants and sites, the manual toothbrush was applied with
a significant higher force (mean overall: 1.6 N) compared with the sonic toothbrushes (mean
overall: 0.9 N), while comparisons between high and low frequency modes of the sonic
toothbrushes revealed no significant differences