CDA ICE Domain 2: Prevention of Cross-contamination Welcome to your CDA ICE Domain 2: Prevention of Cross-contamination 1. CDA ICE: Prevention of Cross-contamination When should a dental assistant change their gloves to prevent cross-contamination between patients? A. After treating every patient B. Once every hour C. When the gloves become visibly soiled D. After completing all treatments for the day None 2. CDA ICE: Prevention of Cross-contamination Which of the following is NOT a recommended practice for preventing cross-contamination in a dental office? A. Using barrier protection on surfaces that are difficult to clean B. Sterilizing the dental handpieces after each patient C. Disinfecting impression trays with an intermediate-level disinfectant D. Wearing the same pair of gloves for cleaning the operatory and treating a patient None 3. CDA ICE: Prevention of Cross-contamination What is the minimum recommended concentration of bleach solution to be used for disinfecting surfaces in the dental operatory? A. 0.10% B. 0.50% C. 1% D. 10% None 4. CDA ICE: Prevention of Cross-contamination In the context of dental surgery, what is the primary reason for double gloving? A. To increase tactile sensitivity B. To allow for quicker glove changes C. To provide an additional layer of protection against perforations D. To reduce the cost of gloves used per procedure None 5. CDA ICE: Prevention of Cross-contamination How often should the dental unit waterlines be flushed to reduce microbial contamination? A. Before and after each patient B. Once at the beginning of the day C. Every hour D. Weekly None 6. CDA ICE: Prevention of Cross-contamination Which of the following is the most appropriate method for sterilizing dental burs? A. Immersion in a high-level disinfectant B. Autoclaving C. Dry heat sterilization D. Washing with soap and water None 7. CDA ICE: Prevention of Cross-contamination What is the primary purpose of the spore testing of autoclaves? A. To check the temperature accuracy of the autoclave B. To ensure the autoclave is reaching the required pressure C. To verify the elimination of microbial life, including bacterial spores D. To assess the duration of the sterilization cycle None 8. CDA ICE: Prevention of Cross-contamination For which of the following scenarios is the use of a surface barrier NOT appropriate in a dental setting? A. On the dental chair where direct patient contact occurs B. On light handles that are frequently touched during procedures C. On the floor beneath the dental chair D. On the computer keyboard used in the operatory None 9. CDA ICE: Prevention of Cross-contamination What is the primary reason for using high-volume evacuation (HVE) during dental procedures? A. To reduce the amount of ambient light B. To decrease the risk of aerosol contamination C. To increase patient comfort by reducing procedure time D. To save energy by reducing the use of dental equipment None 10. CDA ICE: Prevention of Cross-contamination When is it necessary to replace protective eyewear in a dental setting? A. After each patient B. When it becomes visibly soiled or scratched C. Once a year D. Every month None 11. CDA ICE: Prevention of Cross-contamination Which of the following instruments requires sterilization after each use, regardless of its contact with the patient's oral cavity? A. Mouth mirror B. Blood pressure cuff C. Dental chair control panel D. Amalgam condenser None 12. CDA ICE: Prevention of Cross-contamination How should contaminated sharps be disposed of in a dental office? A. In a designated, puncture-resistant sharps container B. In the regular trash bin C. In a biohazard bag D. Washed and reused None 13. CDA ICE: Prevention of Cross-contamination What is the purpose of a dental dam during endodontic treatment? A. To increase the visibility and access to the treatment area B. To prevent the patient from swallowing dental instruments C. To isolate the tooth being treated and prevent microbial contamination D. To keep the patient's mouth open during the procedure None 14. CDA ICE: Prevention of Cross-contamination Which of the following is NOT a critical feature to consider when choosing a disinfectant for dental instruments? A. Biocompatibility with the instruments B. Ability to destroy all forms of microbial life C. Pleasant aroma D. Compliance with regulatory standards None 15. CDA ICE: Prevention of Cross-contamination What is the most appropriate action to take if a dental assistant notices a tear in their glove during a procedure? A. Continue the procedure, then change gloves afterwards. B. Tape the tear and continue the procedure. C. Immediately remove the glove, perform hand hygiene, and replace with a new glove. D. Cover the tear with another glove and continue the procedure. None 16. CDA ICE: Prevention of Cross-contamination When using an ultrasonic cleaner for dental instruments, what is an essential step to ensure effective decontamination? A. Adding scented detergent to the solution B. Pre-rinsing instruments with warm water C. Drying instruments with a paper towel before placing them in the cleaner D. Ensuring the instruments are fully submerged in the cleaning solution None 17. CDA ICE: Prevention of Cross-contamination What is the recommended procedure for handling a needlestick injury in a dental office? A. Wash the area with soap and water and continue working. B. Ignore it unless it becomes visibly infected. C. Immediately wash the area with soap and water, report the incident, and follow the office's post-exposure protocol. D. Apply a bandage and assess the injury at the end of the day. None 18. CDA ICE: Prevention of Cross-contamination What is the significance of the expiration date on a pouch of sterilized instruments? A. It indicates the date by which the instruments must be used. B. It is only a guideline and can be extended if the pouch is unopened. C. It signifies the date until which the sterility of the instruments is guaranteed, assuming the pouch remains intact. D. It is the date by which the instruments should be disposed of, regardless of whether they are used. None 19. CDA ICE: Prevention of Cross-contamination What is the proper protocol for disinfecting dental impressions? A. Soak in water for 30 minutes before disinfecting. B. Spray with a disinfectant and allow it to air dry. C. Immerse in a high-level disinfectant for the time specified by the manufacturer. D. Rinse with alcohol and then air dry. None 20. CDA ICE: Prevention of Cross-contamination What is the recommended frequency for changing the protective cover on a dental X-ray machine head? A. After every patient B. Once a day C. After every five patients D. Weekly None 21. CDA ICE: Prevention of Cross-contamination In dental settings, what is the primary purpose of flushing water and air through dental handpieces after each patient? A. To cool down the handpiece B. To eliminate any residual debris and microorganisms C. To check the functionality of the handpiece D. To prepare the handpiece for the next patient's preference None 22. CDA ICE: Prevention of Cross-contamination When should a dental assistant replace a face mask during a series of patient treatments? A. After each patient B. When it becomes wet C. Every 4 hours D. Both A and B None 23. CDA ICE: Prevention of Cross-contamination What is the correct procedure for handling dental instruments that have been contaminated with blood? A. Wipe them with a paper towel and then sterilize B. Pre-soak them in a disinfectant before cleaning and sterilization C. Rinse them under running water and then place them in the sterilizer D. Clean them with an alcohol swab before placing them in the sterilizer None 24. CDA ICE: Prevention of Cross-contamination Which of the following items is considered a single-use item and should not be reused in a dental setting? A. Mouth mirror B. Saliva ejector C. Dental probe D. Ultrasonic scaler tip None 25. CDA ICE: Prevention of Cross-contamination What is the primary reason for using a high-level disinfectant on dental impressions? A. To enhance the detail of the impression B. To prevent distortion of the impression material C. To eliminate potential pathogenic microorganisms D. To speed up the setting time of the impression material None 26. CDA ICE: Prevention of Cross-contamination Which of the following is NOT an appropriate method for sterilizing a dental handpiece? A. Autoclaving B. Using a chemical vapor sterilizer C. Immersion in a cold sterilization solution D. Using a dry heat sterilizer None 27. CDA ICE: Prevention of Cross-contamination How should a dental assistant dispose of a used needle that has been contaminated with patient blood? A. Place it in the regular trash bin B. Recap it before disposal C. Place it immediately in a puncture-resistant sharps container D. Wash it under running water before disposal None 28. CDA ICE: Prevention of Cross-contamination When is it appropriate to use a sterilization indicator in a dental office? A. Only when sterilizing instruments used in surgical procedures B. With every sterilization cycle to verify the process was effective C. Once a week as a test of the sterilization equipment D. When new staff are being trained on the equipment None 29. CDA ICE: Prevention of Cross-contamination Which of the following is not a recommended practice for cleaning dental hand instruments before sterilization? A. Using a mechanical washer B. Manual scrubbing with a brush C. Soaking in enzymatic cleaner D. Dipping in alcohol for quick cleaning None 30. CDA ICE: Prevention of Cross-contamination What is the most effective way to prevent contamination of dental unit waterlines? A. Using distilled water only B. Flushing the lines between patients C. Adding antimicrobial agents to the water D. Regular maintenance and monitoring of the water quality None 31. CDA ICE: Prevention of Cross-contamination What should be done with a disposable item that comes in contact with blood or saliva? A. Cleaned and reused for another patient B. Disinfected and placed in a sealed bag C. Discarded in a biohazard container D. Rinsed and reused within the same treatment session None 32. CDA ICE: Prevention of Cross-contamination How should a dental assistant manage a reusable protective barrier after it becomes contaminated? A. Wipe it with an alcohol swab and reuse B. Place it in a designated area for cleaning and disinfection C. Dispose of it as it is no longer usable D. Rinse it under running water and allow it to air dry None 33. CDA ICE: Prevention of Cross-contamination Which of the following is NOT an appropriate method for cleaning dental prostheses or appliances before disinfection? A. Brushing with a soft-bristled brush B. Rinsing with tap water C. Soaking in a strong acid solution D. Using an ultrasonic cleaner None 34. CDA ICE: Prevention of Cross-contamination What is the correct protocol if a dental assistant notices that a package of sterilized instruments has been compromised? A. Use the instruments only for non-invasive procedures B. Repackage and resterilize the instruments C. Use a disinfectant spray on the instruments before use D. Mark the package as compromised and use the instruments as is None 35. CDA ICE: Prevention of Cross-contamination Which of the following is a critical step in preventing cross-contamination when handling dental impressions? A. Using a new impression tray for each patient B. Disinfecting the impression immediately after removal from the patient's mouth C. Allowing the impression to dry completely before disinfection D. Storing impressions in a humid environment prior to disinfection None 36. CDA ICE: Prevention of Cross-contamination What is the appropriate action if a sterilization indicator fails to change color after a sterilization cycle? A. Assume the instruments are sterile and use them as needed B. Re-run the sterilization cycle with the same instruments C. Remove the instruments, repackage them, and run a new sterilization cycle D. Use the instruments for procedures that do not require strict sterility None 37. CDA ICE: Prevention of Cross-contamination When is it necessary to wear utility gloves in a dental office? A. During dental examinations B. While performing sterilization procedures C. When placing dental materials in a patient's mouth D. During the application of dental sealants None 38. CDA ICE: Prevention of Cross-contamination What is the significance of the chain of infection in understanding cross-contamination in a dental setting? A. It outlines the steps to take in case of an infection outbreak B. It identifies the sequence of events necessary for an infection to occur C. It provides a guideline for antibiotic prescription D. It determines the type of disinfectant to use for different pathogens None 39. CDA ICE: Prevention of Cross-contamination In what scenario would it be appropriate to use a surface disinfectant spray in a dental office? A. On patient's skin before an injection B. On dental instruments before sterilization C. On operatory surfaces after patient treatment D. On a dentist's hands before a procedure None 40. CDA ICE: Prevention of Cross-contamination What is the primary reason for using high-volume evacuation (HVE) during dental procedures? A. To reduce the amount of ambient light B. To decrease the risk of aerosol contamination C. To increase patient comfort by reducing procedure time D. To save energy by reducing the use of dental equipment None 1 out of 40 Time is Up! Time's up
