[Toothbrushing force, the number of brushing strokes and plaque removal effect with manual toothbrushes with reference to the length of brushing time].
D000293:Adolescent; D000328:Adult; D003773:Dental Plaque / Q000517:prevention & control*; D005260:Female; D006801:Humans; D013997:Time Factors; D014099:Toothbrushing