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Table 3 Brushing behavior within the two cohorts

From: Toothbrushing: to the best of one’s abilities is possibly not good enough

  1995 cohort (N = 96) Mean (SD) 1992 cohort (N = 101) Mean (SD) t (195) d p
Tooth contact time (s)
 overall 206.7 (84.0) 155.3 (70.8) 4.66 .664 <.001
 vestibular 91.3 (40.7) 70.9 (31.2) 3.94 .565 <.001
 palatinal 30.6 (30.9) 26.0 (27.9) 1.10 .157 .272
 occlusal 84.8 (46.0) 58.4 (34.2) 4.55 .654 <.001
Percentage of time lateral surfaces are brushed by
 horizontal (scrubbing) brushing movements 39.7 (28.8) 39.7 (30.3) .002 <.001 .998
 circular brushing movements 47.0 (27.3) 44.8 (29.5) .548 .078 .584