Caries that occurs under a restoration or around the margin of an existing crown is referred to as which type of decay?
dentinal caries
buccal caries
root caries
recurrent caries
recurrent caries
Rationale: Recurrent caries are caries that were there, removed, and repaired, but redecay around the restoration occurs.
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Which is the proper order of the steps involved in cleaning instruments after they are used?
a. Washer-sterilizer, manual cleaning, sterilization b. Precleaning, washer-sterilizer, sterilization c. Disinfection, manual cleaning, washer-sterilizer d. Manual cleaning, sterilization, rinsing
When using a therapy regulator, what can be readily observed by the EMT?
A) Temperature of oxygen in the cylinder B) Liters of oxygen remaining in the oxygen cylinder C) Concentration of oxygen received by the patient D) Liter flow (flow rate) of oxygen leaving the cylinder