[Studies on the effect of different kinds of toothbrushes on plaque removal and toothbrushing pressure in scrubbing method of toothbrushing. (Report II)--For toothbrushes of nylon bristles arranged in different lengths and rows of bristles].
D003773:Dental Plaque / Q000517:prevention & control*; D006801:Humans; D014099:Toothbrushing / Q000295:instrumentation*