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  • Title: In vitro evaluation of abrasion of eroded enamel by different manual, power and sonic toothbrushes.
    Author: Wiegand A, Begic M, Attin T.
    Journal: Caries Res; 2006; 40(1):60-5. PubMed ID: 16352883.
    Abstract:
    This study aimed to evaluate the susceptibility of eroded enamel to brushing abrasion performed by manual, power or sonic toothbrushes. Bovine enamel samples were subjected to 5 cycles, each consisting of 5 min demineralisation, 15 min remineralisation and 10 min brushing in a machine. Toothbrushing with the activated electric devices was supplemented with 20 linear strokes/min. Furthermore, enamel specimens were brushed with 20 linear strokes/min or 80 linear strokes/min with the electric toothbrushes without their individual operating action. A manual brush was applied at 100, 20 or 80 linear strokes/min. Specimens of the control group were not brushed after demineralisation. Loss of enamel was determined by profilometry. For all groups, substrate loss for linear brushing treatment applying 20 or 80 strokes/min did not differ significantly from the control (4.97 +/- 1.49 microm). Three power toothbrushing treatments significantly increased abrasion compared to linear brushing treatment with 20 or 80 strokes/min in their inactivated condition. The results indicate that brushing treatment with power or sonic toothbrushes may lead to significantly higher loss of demineralised enamel compared to toothbrushing without power or sonic support.
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