Lab cases such as dentures or partials should be

disinfected prior to being placed into the patient's oral cavity.
disinfected before being sent to the lab.
handled with gloves.
all of the above.

all of the above.

Rationale: all of the above – Lab cases should be handled like any other item and safely disinfected prior to placing in the patient's mouth or sending out of the office for processing. They have the same infectious potential as any other item that the dental health care worker may come into contact with.