In picture help (science)

When a person undergoes root canal treatment or another endodontic treatment: [select all that apply] a.) the inside of the tooth is carefully cleaned and disinfected. b.) air is forced into the canal to stop bleeding. c.) the inflamed/infected pulp is removed. d.) the inside of the tooth is filled and sealed with a rubber-like material called gutta-percha

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The only infectious disease that was a top-ten killer of americans in 1900 that is still a top-ten killer in 1990 is hiv/aids select one: true false