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Difference in mean particle concentrations during drill use compared to microdebrider use. No significant difference (p = 0.59) found in mean aerosol concentration for the microdebrider at 1825 particles/ft3 (95% CI 508 to 3141) compared to the mean aerosol concentration for the drill at 2445 particles/ft3 (95% CI 595 to 4294).
