Question

Which of the following techniques in dentistry has been shown to be a potential source of cross-contamination as a result of backflow into a patient's mouth?

a. Use of a high-speed handpiece for cavity preparation.
b. Use of an ultrasonic or piezo scaler to clean accretions from teeth.
c. Low-volume saliva ejectors.
d. Hand scaling with periodontal curettes.

Answer 1

c. Low-volume saliva ejectors

Step-by-step explanation:

The use of low-volume saliva ejectors in dentistry has been shown to be a potential source of cross-contamination. These saliva ejectors are used to remove saliva and other fluids from the patient's mouth during dental procedures. However, if there is a backflow of fluids, such as saliva or blood, into the ejector system, it can contaminate the lines and potentially spread pathogens to the next patient. Therefore, proper maintenance and cleaning of the ejector system is essential to prevent cross-contamination.