How long should etch remain on the tooth prior to rinsing?
A) 5 seconds
B) 10–15 seconds
C) 20–30 seconds
D) 40–50 seconds
C
Explanation: C) A gel etchant would be placed directly on the tooth by the supplied syringe/canula delivery system. The etch time is typically 20–30 seconds.
Health Professions
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During the AHG phase of an antibody screen test, before adding AHG reagent to the test tubes, what should the red blood cells be washed with?
a. Distilled water b. Iodine c. Saline d. Soap
Health Professions
The EMT practice of protecting oneself from disease transmission through exposure to blood and other body fluids is referred to as:
A) Standard Precautions B) Exposure control C) Personal protective equipment D) Body Fluid Precautions
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