California RDA written exam Questions and Answers Guide (already passed) Latest 2025 according to the CDC which infection control measure is considered the most critical for reducing the transmission of microbes in the health care setting? - Correct Answers ✅hand washing in a dental setting the clinical supply refrigerator may be used for the preservation of - Correct Answers ✅bonding materials A used dental anesthetic needle is an example of - Correct Answers ✅regulated waste Employees must receive training regarding hazardous chemicals at which interval? - Correct Answers ✅upon hire and whenever a new hazard is introduced The OSHA Hazard Communication Standard is based on the premise that an employee has the right to know about - Correct Answers ✅chemicals in the office Which set of precautions is intended to prevent exposure to all body fluids? - Correct Answers ✅Standard The majority of the spray produced by dental hand pieces consists of - Correct Answers ✅saliva 1 / 4
California RDA written exam Questions and Answers Guide (already passed) Latest 2025 which of the following viral infections can be prevented through immunization? - Correct Answers ✅Hepatitis B According to the Occupational Safety and Health Administration (OSHAP), a bloodborne pathogens training program should include a general explanation of - Correct Answers ✅the modes of disease transmission Routine hand washing removes - Correct Answers ✅most of the transient microbes and some of the resident microbes Which of the following greatly reduces or eliminates biofilm in the dental unit water system? - Correct Answers ✅properly using chemical treatments which of the following modes of disease transmission best describes a human bite? - Correct Answers ✅parenteral the primary reason a surgical face mask must be used during a dental procedure is to - Correct Answers ✅protect the DHCP from exposure to spatter Instrument cassettes should be wrapped - Correct Answers ✅after cleaning and before sterilization 2 / 4
California RDA written exam Questions and Answers Guide (already passed) Latest 2025 Used radiograph fixer solution is usually considered - Correct Answers ✅hazardous waste Which party is responsible for ensuring a Material Safety Data Sheet is available in the work place for each hazardous material? - Correct Answers ✅Employer Which of the following statements most accurately defines engineering controls? - Correct Answers ✅Materials and devices that prevent employees exposure to hazardous or infectious substances When using the air water syringe during dental treatment which of the following personal protective equipment are recommended by the CDC? - Correct Answers ✅gloves, mask, gown, and eye protection According to the Center for Disease Control and Prevention, patient-care items that penetrate soft tissue are categorized as - Correct Answers ✅critical The purpose of a holding solution is to - Correct Answers ✅prevent hardening of debris and body fluids on instruments 3 / 4
California RDA written exam Questions and Answers Guide (already passed) Latest 2025 Which barrier should be removed before temporarily leaving a patient to retrieve supplies? - Correct Answers ✅gloves The majority of organisms that make up dental unit waterline biofilm consists of - Correct Answers ✅water bacteria Material Safety Data Sheet (MSDS) are required by OSHA'S - Correct Answers ✅Hazardous Communication Standard Besides alcohol, which of the following is a common antimicrobial agent found in hand hygiene products? - Correct Answers ✅Chlorohexidine The accessibility of the exposure control plan for employees is the responsibility of the - Correct Answers ✅employer High- level disinfectants should be used - Correct Answers ✅according to the manufacturer's directions Exposure of dental heathcare personnel to nitrous oxide gases can be reduced by - Correct Answers ✅using a scavenger system on the nitrous oxide equipment
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