IOWA DENTAL BOARD LATEST 2026 EXAM QUESTIONS
AND ANSWERS SCORED A+
✔✔How do you properly dispose of extracted teeth in a dental office? - ✔✔Teeth with
no amalgam go in medical waste. Amalgam teeth go in Regulated waste.
✔✔T/F After training, employees should be familiar with the symptoms of bloodborne
disease. - ✔✔True.
✔✔What is holding solution? - ✔✔Pre soaked, Pre- cleaned
✔✔What solution is used in the ultrasonic cleaner? - ✔✔Intermediate disinfectant
✔✔What is the difference between sterilization and disinfection? - ✔✔Sterilization- kills
all forms of life. Disinfect- destroys some of them.
✔✔How often should sterilization cycles be verified? - ✔✔Weekly
✔✔What two liquids disinfectants can be used to sterilize instruments? -
✔✔Glutaraldehyde, Chloride Dioxide
✔✔Why is alcohol not recommended for use as a surface disinfectant? - ✔✔Evaporates
too quickly, not considered disinfectant
✔✔How long should air and water lines be flushed after the patient visit? - ✔✔20-30
seconds
✔✔T/F Glutaraldehydes are EPA-registered chemical/sterilants - ✔✔True
✔✔Sodium hypochlorite, when used as a surface disinfectant, should be mixed in a
1:10 dilution. (Bleach) - ✔✔True (counter and tables) CAN STAIN. 1:100 floor/walls.
✔✔T/F For surface disinfection, water, rather than alcohol, must be used to dilute
agents that require dilution before use. - ✔✔True
✔✔ How can microorganisms enter a person's body? - ✔✔Ingest, Splatter, Arousal,
Direct or Indirect
✔✔How often should the patient's medical history be updated? - ✔✔Every visit.
✔✔What is the difference between disinfection and sterilization? - ✔✔Disinfect-
Chemical Killing of SOME microorganisms
Sterilization- Chemical Killing of EVERYTHING including spores
AND ANSWERS SCORED A+
✔✔How do you properly dispose of extracted teeth in a dental office? - ✔✔Teeth with
no amalgam go in medical waste. Amalgam teeth go in Regulated waste.
✔✔T/F After training, employees should be familiar with the symptoms of bloodborne
disease. - ✔✔True.
✔✔What is holding solution? - ✔✔Pre soaked, Pre- cleaned
✔✔What solution is used in the ultrasonic cleaner? - ✔✔Intermediate disinfectant
✔✔What is the difference between sterilization and disinfection? - ✔✔Sterilization- kills
all forms of life. Disinfect- destroys some of them.
✔✔How often should sterilization cycles be verified? - ✔✔Weekly
✔✔What two liquids disinfectants can be used to sterilize instruments? -
✔✔Glutaraldehyde, Chloride Dioxide
✔✔Why is alcohol not recommended for use as a surface disinfectant? - ✔✔Evaporates
too quickly, not considered disinfectant
✔✔How long should air and water lines be flushed after the patient visit? - ✔✔20-30
seconds
✔✔T/F Glutaraldehydes are EPA-registered chemical/sterilants - ✔✔True
✔✔Sodium hypochlorite, when used as a surface disinfectant, should be mixed in a
1:10 dilution. (Bleach) - ✔✔True (counter and tables) CAN STAIN. 1:100 floor/walls.
✔✔T/F For surface disinfection, water, rather than alcohol, must be used to dilute
agents that require dilution before use. - ✔✔True
✔✔ How can microorganisms enter a person's body? - ✔✔Ingest, Splatter, Arousal,
Direct or Indirect
✔✔How often should the patient's medical history be updated? - ✔✔Every visit.
✔✔What is the difference between disinfection and sterilization? - ✔✔Disinfect-
Chemical Killing of SOME microorganisms
Sterilization- Chemical Killing of EVERYTHING including spores
