MCQs in Endodontics

Chapter 6: Armamentarium

1 - Infection control procedures:

  1. that protect against monilial infection protect against HBV.
  2. that protect against HBV should protect against HIV.
  3. that protect against HIV should protect against HBV.
  4. are controlled with the use of the rubber dam.






The answer is: B



2 - Color change in a process indicator strip indicates:

  1. verification of sterilization.
  2. verification of completed sterilization cycle.
  3. a change in pH.
  4. a need to reprocess.






The answer is: B


3- The organism least resistant to thermal inactivation is :

  1. bacterial spores.
  2. virus.
  3. Streptococcus mutans.
  4. spirochete.






The answer is: A


4- Rapid-speed autoclaves:

  1. require at least 30 minutes for sterilization.
  2. require no antirust prctreatment.
  3. destroy cloth products.
  4. produce verifiable sterilization.





The answer is: D


5- Chemiclave:

  1. corrodes instruments.
  2. solution can be recirculate.
  3. sterilization is verifiable.
  4. does not affect heat-sensitive materials.





The answer is: C


6- Dry heat:

  1. provides corrosion protection for dry instruments.
  2. requires only 30 minutes.
  3. has no mercury vapor effect.
  4. does not destroy heat-sensitive materials.






The answer is: A


7- Chairside dry heat glass bead or salt sterilization:

  1. is verifiable.
  2. serves as an emergency backup.
  3. requires a brief time to warm up.
  4. can sterilize a large number of instruments.






The answer is: B


8- Glutaraldehydc:

  1. requires a short period of sterilization.
  2. is relatively noncorrosive.
  3. results in verifiable sterilization.
  4. is non-irritating and nontoxic.






The answer is: B


9- The sterilizer:

  1. is effective if the process indicator changes color.
  2. should be checked weekly with a biologic indicator.
  3. should be checked daily with a biologic indicator.
  4. should be checked for sterilization of bacteria rather than spores.






The answer is: B


10- Gutta-percha is best sterilized in:

  1. an autoclave.
  2. dry heat.
  3. 5% sodium hypochlorite for 1 minute.
  4. paraformaldehyde for 1 minute.






The answer is: C