Which link in the chain of infection is the site where the invading organisms live and multiply? 

_________ is the only professional topical fluoride to be used for children under the age of 6 years old.  

The incidence of gingivitis is greatest in what area? 

Eye protection for the dental team members and patients is necessary to prevent physical injuries and infections of the eyes.  Removal of a mask in the treatment room immediately following the use of aerosol-producing procedures permits direct exposure to airborne organisms. 

The maximum caries-inhibiting effect of fluoride is seen when there has been systemic exposure prior to tooth eruption and which of the following? 

All of the following statements regarding power toothbrushes are true EXCEPT one.  Which is the exception? 

In the classification of inanimate objects, which one of the following is considered semi-critical?

Criteria for the selection of an ideal disinfectant include all of the following EXCEPT one.  Which one is the exception?

Blood, suctioned fluids, or other liquid waste may be carefully poured into a closed container and placed into the biohazard trash in compliance with applicable local regulations

Organic debris left on an instrument may prevent sterilization from occurring.  In a dry heat sterilizer timing begins when instruments are place in the sterilizer and it is turned on.