Abstract
The purpose of this study was to analyze the plaque removal efficacy with a sonic toothbrush. We also investigated the effects of a video teaching material that provided appropriate instructions for plaque removal with a sonic toothbrush. The subjects were 28 volunteers (14 male, 14 female, average age 24.1±1.8 years-old), who were students of Showa University Dental School. First 2 weeks, no significant differences were observed in the plaque removal efficacy between the manual and sonic toothbrush group. However, at 5 months from baseline, significant improvement of plaque control record and plaque removal were noted in the sonic toothbrush group (p<0.05). On the other hand, the improvement of the plaque removal effect was not affected by the use of the video teaching material. These results suggested that the long term training is needed for acquisition of skill for high level plaque removal with the use of a sonic toothbrush. Nihon Shishubyo Gakkai Kaishi (J Jpn Periodontol) 49 : 120-129, 2007.
