MCQs in Endodontics

Chapter 20: Periradicular surgery

 

 1- Unless the benefit-risk ratio is high, surgery should be avoided by:

  1. "brittle diabetics."
  2. dialysis patients.
  3. immunocompromised patients.
  4. all of the above.

 

 

 

 

 

The answer is: C

 

 2- Which of the following statements regarding the presurgical workup is false:

  1. It is performed by the surgical assistant.
  2. The patient is informed of the nature of the procedure.
  3. The patient's medical history is reviewed and blood pressure is checked.
  4. None of the above.

 

 

 

 

 

The answer is: A

 

3- Maximum hemostasis is obtained by depositing anesthetic:

  1. into the attached gingiva.
  2. into the papillae.
  3. into the alveolar mucosa.
  4. into all of the above.

 

 

 

 

 

 The answer is: C

 

4- 2% Lidocaine with 1:50,001) Epinephrine:

  1. is contraindicated in the medically compromised patient.
  2. is administered after anesthesia is obtained.
  3. provides anesthesia and analgesia.
  4. is deposited in multiple injections into the vestibular tissues apical to the root apices.

 

 

 

 

 

The answer is: B

 

 5- The triangular/rectangular flap incision:

  1. provides the best access of all flaps.
  2. has no disadvantages.
  3. compromises the blood supply to the hap.
  4. elevation begins at the junction of the horizontal and vertical incision.

 

 

 

 

 

The answer is: A

 

 6- Which of the following statements concerning apical curettage is true:

  1. Apical curettage is definitive treatment.
  2. Not all curetted soft tissue needs to be submitted for biopsy.
  3. Bony access should be enlarged to remove the lesion in toto.
  4. Ml of the above.

 

 

 

 

 

The answer is: C

 

 7- The angle of the beveled resected root:

  1. should be sufficient to provide access to perform the rctropreparation.
  2. is rarely greater than it appears to be.
  3. should be at 45 degrees to the facial surface.
  4. All of the above.

 

 

 

 

 

 

The answer is: A

 

8- Ferric subsulfate:

  1. is used to identify the complete outline of the root.
  2. is painted on the wall of the bony crypt to provide hemostasis.
  3. acts by causing intravascular coagulation.
  4. All of the above.

 

 

 

 

 

The answer is: C

 

 9- All beveled root canal fillings:

  1. can be easily evaluated.
  2. leak.
  3. can be hermetically sealed by retrofilling without a magnification system.
  4. should be rctrofilled only if there is an apparent incompletely sealed root canal system.

 

 

 

 

 

 

The answer is: B

 

 10- Which of the following is not a requirement for retropreparations:

  1. All isthmus tissue must be removed.
  2. In roots with one canal the shape is usually round.
  3. It must be parallel to the anatomic outline of the pulpal space.
  4. It must be at least 3 mm deep.

 

 

 

 

 

 

The answer is: B

 

 11- Ultrasonic root end preparations:

  1. eliminate the bevel.
  2. facilitate idea! preparation.
  3. conserve root structure.
  4. All of the above.

 

 

 

 

 

 

The answer is: D

 

 12- Characteristics of an idea! retrofilling material include all of the following except:

  1. long-term sealing ability.
  2. unaffected by moisture.
  3. slight expansion on setting.
  4. nonresorbable.

 

 

 

 

 

 

The answer is: C

 

 13- The retrofilling material that offers the most advantages to date is:

  1. amalgam and cavity varnish.
  2. composite resin.
  3. IRM orEBA.
  4. polycarboxylate cement.

 

 

 

 

 

 

The answer is: C

 

 14- Sutures:

  1. do not impede wound healing.
  2. ideally should be removed after 48 hours.
  3. are placed by proceeding from the attached tissue to the unattached tissue.
  4. All of the above.

 

 

 

 

 

 

The answer is: B

 

 15- Postoperative care does not include:

  1. continuous application of an ice pack.
  2. chlorhexidene mouth rinses.
  3. written postoperative instructions.
  4. None of the above.

 

 

 

 

 

 

The answer is: B

 

 16- The operating microscope can:

  1. enhance the ability of the surgeon to inspect, prepare, and seal the apex.
  2. be useful in patient education.
  3. provide a permanent record for insurance purposes.
  4. All of the above.

 

 

 

 

 

 

The answer is: D