High-Speed Dental Instruments: An Investigation of Protein-Contaminated Dental Handpieces with the Bicinchoninic Acid Assay in Dental Offices in Styria, Austria.

Trial series B In order to detect a possible trend of concentration increase or decrease, three dental treatments each were performed in offices two and seven using the same handpiece on two consecutive days wiping with a disinfectant after each treatment and mechanical cleansing at the end of the first day.

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