DANB - Chapter 20 Disinfection Questions with Solutions

DANB - Chapter 20 Disinfection Questions with Solutions Housekeeping surfaces need to be cleaned with only a detergent or low level disinfectant ex:walls, floors, sinks. OSAP 3 Clinical Contact Surfaces 1. Touch surfaces: Directly touch/contaminated during dental procedures. (Light, dental unit controls, computers, pens) 2. Transfer surfaces: Touched by contaminated instruments. (instrument trays, handpiece holders) 3. Splash Spatter, and Droplets surfaces:countertops where these can collect Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:06 / 0:15 Full screen Brainpower Read More Antimicrobial Describes any substance that kills microorganisms, natural or synthetic Disinfectant a chemical substance that kills harmful bacteria or viruses, applied to dental equipment and countertops Antispetic This is used for antimicrobial agents that are applied to living tissue NEVER Disinfectants and antiseptic should _____ be used interchangable* EPA (Environmental Protection Agency) Who registers and regulates disinfectants and chemical sterilants by chemical classification High-level disinfection kills all microorganisms except spores and prions, Disinfectant with short contact time, used for semi-critical items that can not be heat sterilized Intermediate level disinfectant hospital disinfectant with tuberculocidal activity - non critical items or surfaces have been contaminated with blood or saliva Low-level disinfectant Disinfectant that destroys certain viruses and fungi; used for general housecleaning, no tuberculocidal, not for surfaces contaminated with blood EPA and Tuberculocidal Claims ONLY registered ____ and _______ _______ disinfectant should be used for dental treatment areas Sporicidal Capable of killing bacterial spores Virucidal Capable of destroying viruses Fungicidal Capable of destroying fungi shelf-life How long a product may be stored before use. reuse-life Time period that a disinfectant should remain effective during use and reuse Iodophors -EPA registered intermediate level hospital disinfectants with tuberculocidal action -Disinfects surface that have been soiled with infectious patient material. -Effective within 5-10 minutes -Can be used as an immersion disinfectant for non-hydrocolloid impressions -MUST be mixed with distilled water because the iodine may corrode certain metals or leave stains on clothing. Synthetic Phenol Compound -EPA-registered intermediate-level hospital disinfectant with broad-spectrum disinfecting action -If DILUTED properly it is a surface disinfectant used on metal, glass, rubber, or plastic, but can leave residual film - Can be used as a holding solution for instruments or a disinfecting agent on impressions Sodium Hypochlorite -Intermediate-level disinfectant (main ingredient is household bleach) -Fast-acting, economical, and broad-spectrum. -CDC states this is NOT an EPA-registered disinfectant -Unstable, needs daily preparation, strong odor, and is corrosive to some metals. Alcohol -Damaging to certain materials -ADA, CDC, and OSAP do not recommend this as a environmental surface disinfectant Immersion Disinfectant Disinfectant used for immersion (soaking) of heat-sensitive instruments and can range from 6-30 hours