Department of Preventive Dentistry, Periodontology and Cariology, University of Zurich, Plattenstrasse 11, 8032, Zurich, Switzerland.
Clin Oral Investig. 2013 Apr;17(3):815-22. doi: 10.1007/s00784-012-0788-z. Epub 2012 Jul 13.
This study aimed to determine the brushing forces applied during in vivo toothbrushing with manual and sonic toothbrushes and to analyse the effect of these brushing forces on abrasion of sound and eroded enamel and dentin in vitro.
Brushing forces of a manual and two sonic toothbrushes (low and high frequency mode) were measured in 27 adults before and after instruction of the respective brushing technique and statistically analysed by repeated measures analysis of variance (ANOVA). In the in vitro experiment, sound and eroded enamel and dentin specimens (each subgroup n = 12) were brushed in an automatic brushing machine with the respective brushing forces using a fluoridated toothpaste slurry. Abrasion was determined by profilometry and statistically analysed by one-way ANOVA.
Average brushing force of the manual toothbrush (1.6 ± 0.3 N) was significantly higher than for the sonic toothbrushes (0.9 ± 0.2 N), which were not significantly different from each other. Brushing force prior and after instruction of the brushing technique was not significantly different. The manual toothbrush caused highest abrasion of sound and eroded dentin, but lowest on sound enamel. No significant differences were detected on eroded enamel.
Brushing forces of manual and sonic toothbrushes are different and affect their abrasive capacity.
Patients with severe tooth wear and exposed and/or eroded dentin surfaces should use sonic toothbrushes to reduce abrasion, while patients without tooth wear or with erosive lesions confining only to enamel do not benefit from sonic toothbrushes with regard to abrasion.
本研究旨在确定手动和声波牙刷在体内刷牙时施加的刷牙力，并分析这些刷牙力对体外声衰和酸蚀牙釉质和牙本质磨损的影响。
在对 27 名成年人进行了相应刷牙技术的指导前后，测量了手动牙刷和两种声波牙刷（低频和高频模式）的刷牙力，并通过重复测量方差分析（ANOVA）进行了统计学分析。在体外实验中，使用含氟牙膏糊剂，用各自的刷牙力在自动刷牙机上刷声声衰和酸蚀牙釉质和牙本质标本（每组亚组 n=12）。通过轮廓测量法确定磨损，并通过单向方差分析进行统计学分析。
手动牙刷的平均刷牙力（1.6±0.3 N）明显高于声波牙刷（0.9±0.2 N），两者之间无显著差异。刷牙技术指导前后的刷牙力无显著差异。手动牙刷对正常牙釉质和酸蚀牙本质的磨损最大，但对正常牙釉质的磨损最小。在酸蚀牙釉质上未检测到显著差异。
手动和声波牙刷的刷牙力不同，这会影响它们的磨损能力。
有严重牙齿磨损和暴露及/或酸蚀牙本质表面的患者应使用声波牙刷以减少磨损，而无牙齿磨损或仅局限于牙釉质的侵蚀性病变的患者在磨损方面不会受益于声波牙刷。
