Purpose: To analyze the cleaning effectiveness of one type of instrument wa
sher available for use in a dental office. Materials and Methods: Dental in
struments were heavily contaminated with blood and specific test bacteria.
They were placed in cleaning baskets or within instrument cassettes, proces
sed through the instrument washer, and analyzed for remaining blood and via
ble bacteria. Results: Information obtained indicated that the washer is an
effective cleaning system for dental instruments.