Sharma N C, Galustians J, Qaqish J, Cugini M
BioSci Research Canada Ltd, Mississauga, Ontario, Canada.
Am J Dent. 1998 Sep;11(Spec No):S29-33.
To compare the safety and plaque removal efficacy, and subject preference of two electric toothbrushes in a single-blind, randomized, split-mouth study.
The devices studied were the Braun Oral-B 3D Plaque Remover and the sonicare electric toothbrush. The 3D toothbrush combines the clinically proven oscillating/rotating action of the D9 with a sonic frequency pulsating action in the direction of the long axis of the bristles, giving a three-dimensional cleaning action. At an initial visit, the subjects (n = 44) were given a baseline examination of the oral soft tissues and a full mouth prophylaxis and instructed in the use of the two products, which was followed by a 4-week training period. After 2 weeks of using each toothbrush on alternate days, brushing technique was checked. After a further 2 weeks, having abstained from oral hygiene for 48 hours, two contralateral quadrants of the mouth were randomly assigned to be cleaned by the subjects with each toothbrush. Plaque assessments and soft tissue examinations were made before and after brushing. Plaque was evaluated according to a refinement of the Modified Navy Plaque Index. At the end of the study, subjects completed a product evaluation questionnaire.
Plaque levels were significantly reduced by both toothbrushes (P = 0.001), but the efficacy of the 3D electric toothbrush was significantly greater than that of the sonicare toothbrush (P = 0.001) for all comparisons. Plaque reduction was particularly marked in the interproximal areas, reaching 87% with the 3D product, compared with 68% for sonicare (P = 0.001). In the responses to the questionnaire, the majority of subjects stated that they preferred the 3D toothbrush (88% vs 12%), mainly because of the smaller size of the brush, ease of control and overall maneuverability.
在一项单盲、随机、分口研究中比较两种电动牙刷的安全性、牙菌斑清除效果及受试者偏好。
所研究的器械为博朗欧乐B 3D牙菌斑清除器和声波震动牙刷。3D牙刷将经临床验证的D9的振荡/旋转动作与沿刷毛长轴方向的声波频率脉动动作相结合，实现三维清洁动作。在初次就诊时，对受试者（n = 44）进行口腔软组织的基线检查和全口洁治，并指导其使用这两种产品，随后进行为期4周的训练期。在每隔一天使用每种牙刷2周后，检查刷牙技巧。再过2周，在48小时未进行口腔卫生护理后，随机分配口腔的两个对侧象限由受试者用每种牙刷进行清洁。在刷牙前后进行牙菌斑评估和软组织检查。根据改良海军牙菌斑指数的改进版对牙菌斑进行评估。在研究结束时，受试者完成一份产品评估问卷。
两种牙刷均显著降低了牙菌斑水平（P = 0.001），但在所有比较中，3D电动牙刷的效果均显著优于声波震动牙刷（P = 0.001）。牙菌斑减少在邻面区域尤为明显，3D产品达到87%，而声波震动牙刷为68%（P = 0.001）。在问卷回复中，大多数受试者表示他们更喜欢3D牙刷（88%对12%），主要是因为牙刷尺寸较小、易于控制和整体可操作性强。
