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. 2018 Aug 8;18:136. doi: 10.1186/s12903-018-0594-3

Table 5.

Comparison of oral hygiene habits between AA group and non-AA group

Oral Hygiene Habits AA (n = 169) Non-AA (n = 156) p value
Brushing methods
 • Horizontal 63 16 0.000*
 • Vertical 44 96 0.000*
 • Mixed 62 44 0.103
Brushing frequency 0.001*
 • < 1 time/day 82 47
 • ≥ 1 time/day 87 109
Brushing time
 • < 1 min/time 95 52 0.000*
 • 1–3 min/time 58 70 0.052
 • > 3 min/time 16 34 0.002*
Brushing sites 0.012*
 • Every surface 76 92
 • Only facial surfaces 93 64
Average lifespan of a toothbrush 0.001*
 • Three months 30 54
 • > Three months 139 102
Flossing 0.026*
 • Yes 6 15
 • No 163 141
Supra-gingival scaling 0.000*
 • ≥ 1 time/year 9 28
 • < 1 time/year 160 128
Periodic dental examinations 0.003*
 • Yes 15 32
 • No 154 124

Independent t-test was performed; *: p < 0.05