Terézhalmy G T, Biesbrock A R, Walters P A, Grender J M, Bartizek R D
University of Texas Health Science Center at San Antonio Dental School, San Antonio, TX, USA.
Int J Dent Hyg. 2008 Nov;6(4):321-7. doi: 10.1111/j.1601-5037.2008.00327.x.
To compare plaque removal efficacy of Oral-B CrossAction (CA) used for 1 min with an American Dental Association (ADA) manual toothbrush used for 2 or 5 min in an examiner-blind, three-treatment, six-period crossover study.
After refraining from all oral hygiene procedures for 23-25 h, subjects were randomly assigned to one of nine possible six-period (visit) treatment sequences. Plaque was assessed at baseline (Rustogi Modified Navy Plaque Index). Post-brushing scores were recorded after brushing with a marketed dentifrice and the assigned toothbrush for the specified duration. The same procedure was followed at each of six subsequent visits. Clinical measurements were carried out by the same examiner.
Forty subjects completed the study. All three treatments effectively removed plaque from the whole mouth, along the gingival margin and from approximal surfaces. Whole mouth and gingival margin plaque removal scores with CA for 1 min did not differ significantly from scores with the ADA toothbrush used for 2 min. The ADA brush used for 5 min showed significantly greater whole mouth (P < 0.001) and gingival margin (P < 0.001) plaque reduction than the two other treatments. Approximal plaque removal scores did not differ between the three treatments.
Efficient plaque removal can be achieved after 1 min of brushing with CA. The amount of plaque removed did not differ significantly from that achieved with the ADA brush after 2 min of brushing. Greater whole mouth and gingival margin plaque removal scores were seen with the ADA brush after 5 min.
在一项检查者盲法、三治疗组、六阶段交叉研究中，比较使用1分钟的欧乐B交叉动作（CA）牙刷与使用2分钟或5分钟的美国牙科协会（ADA）手动牙刷的牙菌斑清除效果。
在停止所有口腔卫生措施23 - 25小时后，受试者被随机分配到九种可能的六阶段（就诊）治疗顺序中的一种。在基线时（Rustogi改良海军牙菌斑指数）评估牙菌斑。在用市售牙膏和指定牙刷按规定时间刷牙后记录刷牙后的得分。在随后的六次就诊中每次都遵循相同的程序。临床测量由同一名检查者进行。
40名受试者完成了研究。所有三种治疗方法都能有效清除全口、龈缘和邻面的牙菌斑。使用CA牙刷1分钟的全口和龈缘牙菌斑清除得分与使用ADA牙刷2分钟的得分无显著差异。使用ADA牙刷5分钟时，全口（P < 0.001）和龈缘（P < 0.001）牙菌斑减少量显著大于其他两种治疗方法。三种治疗方法的邻面牙菌斑清除得分无差异。
使用CA牙刷刷牙1分钟后可有效清除牙菌斑。其清除的牙菌斑量与使用ADA牙刷刷牙2分钟后的清除量无显著差异。使用ADA牙刷5分钟后，全口和龈缘牙菌斑清除得分更高。
