van der Weijden G A, Timmerman M F, Reijerse E, Snoek C M, van der Velden U
Department of Periodontology, Academic Centre for Dentistry Amsterdam, ACTA, The Netherlands.
J Clin Periodontol. 1996 Aug;23(8):724-9. doi: 10.1111/j.1600-051x.1996.tb00601.x.
This was a 2-part study. The purpose of the 1st part was to examine the relationship between brushing force and plaque removal efficacy comparing a regular manual toothbrush (M) with an electric toothbrush the Braun/Oral-B Plak Control (B). The study consisted of a single oral prophylaxis followed by 5 experiments which differed solely in respect to toothbrushing force. At baseline (after 24-h plaque accumulation), the amount of dental plaque was evaluated and subsequently, the subject's mouth was brushed by a dental hygienist. Brushing was carried out in a random split-mouth order. Either the 1st and 3rd quadrants or the 2nd and 4th quadrants were brushed with 1 toothbrush and the 2 remaining quadrants with the other. The available time for the brushing procedure was 2 min. After brushing, the amount of remaining dental plaque was assessed. The force used in experiment 1 through 5 was 100, 150, 200, 250, 300 g, respectively. The results show that when brushing force is increased, more plaque is removed with either of the two brushes. Except for the high brushing force (300 g), the electric toothbrush removed more plaque than the manual brush. The purpose of the 2nd part was to evaluate the habitual brushing force which individuals use with various toothbrushes. Besides a manual toothbrush (M), 3 electric toothbrushes were examined, the Rotadent (R), Interplak (I) and Braun (B). 20 subjects were selected on the basis of being 'good brushers' (plaque score at screening < 25%). At baseline, each subject randomly received 1 of the 4 brushes. They were allowed a training period of 3 weeks at the end of which they were asked to abstain from brushing for at least 24 h. The plaque (Turesky modification of the Quigley & Hein) was scored, after which the subjects brushed their teeth (2 min) with the assigned toothbrush equipped with a strain gauge. A computer set-up measured (100 Hz) and calculated the mean brushing force. After brushing, the amount of remaining plaque was assessed. The design of the study was a 4-way cross-over. The results show that with a manual brush, considerably more force is used than with the electric brushes (R = 96, I = 119, B = 146, M = 273). No significant relation between brushing force and plaque removal was demonstrated for any of the brushes.
这是一项分为两部分的研究。第一部分的目的是比较普通手动牙刷（M）和博朗/欧乐 - B 菌斑控制电动牙刷（B），研究刷牙力度与牙菌斑清除效果之间的关系。该研究包括一次口腔预防治疗，随后进行 5 次实验，这些实验仅在刷牙力度方面有所不同。在基线期（24 小时牙菌斑积累后），评估牙菌斑量，随后由口腔保健员为受试者刷牙。刷牙按照随机的半口顺序进行。用一把牙刷刷第一和第三象限或第二和第四象限，另外两个象限用另一把牙刷刷。刷牙程序的可用时间为 2 分钟。刷牙后，评估剩余牙菌斑量。实验 1 至 5 中使用的力度分别为 100、150、200、250、300 克。结果表明，当刷牙力度增加时，两种牙刷中的任何一种都能清除更多牙菌斑。除了高刷牙力度（300 克）外，电动牙刷比手动牙刷清除的牙菌斑更多。第二部分的目的是评估个体使用各种牙刷时的习惯性刷牙力度。除了一把手动牙刷（M）外，还检测了 3 种电动牙刷，即 Rotadent（R）、Interplak（I）和博朗（B）。根据“优秀刷牙者”（筛查时牙菌斑评分<25%）的标准选择了 20 名受试者。在基线期，每个受试者随机收到 4 把牙刷中的 1 把。他们被给予 3 周的训练期，在此期间结束时，要求他们至少 24 小时不刷牙。对牙菌斑（Quigley & Hein 的 Turesky 修改版）进行评分，之后受试者用配备应变仪的指定牙刷刷牙（2 分钟）。计算机装置测量（100 赫兹）并计算平均刷牙力度。刷牙后，评估剩余牙菌斑量。该研究的设计是四向交叉。结果表明，使用手动牙刷时，使用的力度比电动牙刷大得多（R = 96，I = 119，B = 146，M = 273）。对于任何一种牙刷，均未证明刷牙力度与牙菌斑清除之间存在显著关系。
