Abstract
Dental wear caused by tooth care is a complex phenomenon that depends on the quality of the tooth material, the type of toothbrush and the brushing slurry. Tooth wear is commonly determined in abrasion experiments using a standardized toothbrush in contact with a radioactively labeled dentin sample (RDA method). The increase of radioactivity in the slurry is a direct and highly-sensitive indicator for wear. It is, however, detrimental that RDA provides an integral view of the tribological processes leaving microscopic issues undetected. Therefore, in this contribution the macroscopic system of brush versus tooth was reduced to a microtribological setup analyzing the contact between a single bristle (monofilament) and a tooth sample. This setup allowed to correlate friction and wear events to topography and structure of the tooth and will enable the evaluation of cleaning processes microscopically in the future. In addition, results of this work were related to the literature results of RDA experiments.
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