Category 1
The type of plaque that develops inside DUWLs, consisting of bacterial cells and other microbes, is called
Disposable inline microfiltration cartridges should be changed
What is according to the manufacturer’s recommendations?
Biofilm can contain 3 types of bacteria.
What is fungi, algae, and protozoa?
Planktonic bacteria are
What is free floating in the water?
Which of the following types of water will likely have the highest bacterial colony-forming unit (CFU) count?
1)Tap water from the sink
2) Distilled water purchased in a plastic container 3) Water from a drinking fountain
4) Water from an air-water syringe
What is water from an air-water syringe?
An option for independent verification of the quality of dental unit water cleaning is
What is using a commercial testing service?
To reduce the microbial count temporarily and to help clean the handpiece waterlines, DUWLs should be flushed
What is at the beginning of the day for 2 minutes and for 20 to 30 seconds between patients?
The advantages of self-contained water reservoirs include
What is dental personnel can select the quality of water used?
Advantages of using self-contained water reservoirs include
What is giving the dental office control over quality of water used?
Flushing the dental unit waterlines (DUWLs) for 2 minutes at the beginning of the treatment day and for 20 to 30 seconds between patients will help to
What is reduce the microbial count of bacteria in the dental unit waterlines?
Within 5 days of installation, research has shown that microbial counts in new dental unit waterlines (DUWLs) can reach _____ CFUs/mL.
What is 200,000?
The number of waterborne bacteria in community water is kept below _____ colony-forming units (CFUs) per milliliter.
What is 500?
Backflow from low-volume saliva ejectors can occur when a patient
What is closes his or her lips around the tip of a saliva ejector?
When choosing a chemical agent to give dental unit waterlines a “shock” treatment, care should be taken to
What is check with the manufacturer to determine the recommended chemical product and protocol for maintenance?
The type of water used during surgery where bone is exposed should be
What is only sterile water delivered in a sterile syringe?
Reduction of exposure of the dental unit water for the dental team include
What is HVE, mask, and protective eyewear and/ or face shields?
Methods of reducing the level of bacterial contamination in waterlines include
What are chemical treatment regimens, self-contained water reservoirs, and microfiltration.
Water from municipal lines can be harmful to a patient because it may contain a biofilm with
What is bacterial cells?
Techniques in dentistry has been shown to be a potential source of cross-contamination as a result of backflow into a patient’s mouth?
What is Low-volume saliva ejectors?
Factors contributing to the formation of bacteria in DUWLs include
What is stagnant water, water heating, and backflow from a saliva ejector
The bacteria in the biofilm are more resistant to chemical germicides than planktonic bacteria by a factor of
What is 1500?