What agent is used to disinfect dental impressions after rinsing?

After rinsing, dental impressions should be disinfected with an intermediate-level disinfectant that is anti-tuberculocidal, as required by the CDC and ADA infection control guidelines. Appropriate agents include diluted sodium hypochlorite (1:10 bleach solution), iodophors, or complex phenolics. These agents kill bacteria (including M. tuberculosis), most viruses, and fungi. The original answer 'sodium chloride' (normal saline) was incorrect — saline is not a disinfectant. Different impression materials have varying compatibility with disinfectants; alginate impressions may be briefly sprayed and bagged, while elastomeric impressions (polyvinylsiloxane) tolerate immersion.