Kafukufuku woperekedwa ndi American Dental Association (ADA) akuti mu 2003 kuti 50% ya mercury yomwe imalowa mu Publicly Owned Treatment Works (POTWs) idathandizidwa ndi maofesi a mano. IAOMT imapereka njira zotetezera ogwira ntchito, odwala komanso chilengedwe ku zoopsa za mercury ya mano.
