MCQs in Endodontics

Chapter 22: Pediatric endodontics

 

 

1- The basic morphologic difference between primary and permanent teeth is that:

  1. the thickness of dentin between the pulp and enamel is greater in primary teeth.
  2. the enamel is thicker on primary teeth.
  3. the pulp chamber is comparatively smaller in primary teeth than in permanent teeth.
  4. the pulp horns arc higher in primary molars than in permanent molars.

 

 

 

 

 

The answer is: D

 

 2- Radiographically, in primary teeth:

  1. pathologic changes in the periradicular tissues are most often apparent at the apices rather than the furcation in molars.
  2. the presence of calcified masses within the pulp is indicative of acute pulpal disease.
  3. the treatment of choice for internal resorption is extraction.
  4. pathologic bone and root resorption is always indicative of nonvital pulp.

 

 

 

 

 

 

The answer is: C

 

 3- Which of the following diagnostic tests are usually reliable for determining pulpal status in primary teeth:

  1. Thermal pulp tests.
  2. Electric pulp tests.
  3. Percussion testing.
  4. None of the above.

 

 

 

 

 

 The answer is: D

 

 4- Indirect pulp therapy:

  1. is indicated only in the treatment of teeth with deep carious lesions in which there is no clinical evidence of pulpal degeneration or periapical pathology.
  2. removes all the bacteria but not all the caries.
  3. includes placing calcium hydroxide or ZOE over the remaining caries and permanently restoring the tooth with amalgam.
  4. All of the above.

 

 

 

 

 

The answer is: A

 

 5- Direct pulp capping is recommended for primary teeth with:

  1. carious exposures.
  2. mechanical exposures.
  3. calcification in the pulp chamber.
  4. All of the above.

 

 

 

 

 

The answer is: B

 

 6- Calcium hydroxide:

  1. is the material of choice for direct pulp capping.
  2. may cause calcification of the remaining pulp tissue.
  3. does not enter into the formation of the dentin bridge.
  4. All of the above.

 

 

 

 

 

The answer is: D

 

 7- Formocresol pulpotomy on a primary tooth is indicated when:

  1. there is a history of spontaneous toothache.
  2. the inflammation or infection is confined to the coronal pulp.
  3. the pulp docs not hemorrhage.
  4. hemorrhage following coronal pulp amputation is uncontrollable.

 

 

 

 

 

The answer is: B

 

 8- Which of the following usually is not an indication of failure for a formocresol pulpotomy:

  1. Pain.
  2. Internal resorption of the root adjacent to the area where the formocresol was applied.
  3. Development of a periradicular radiolucency.
  4. Loosening of the tooth.

 

 

 

 

 

The answer is: A

 

 9- Formocresol pulpotomy as compared to glutaraldchydc pulpotomy:

  1. is more successful.
  2. has more undesirable effects.
  3. is the technique taught at most dental schools.
  4. All of the above.

 

 

 

 

 

The answer is: C

 

10- Which of the following statements concerning primary root canal anatomy is false?

  1. Root/crown ratio is smaller than that of permanent teeth.
  2. Roots are narrower than those of permanent teeth.
  3. Molar roots are more divergent than those of permanent molars
  4. Roots are shorter than those of permanent teeth.

 

 

 

 

 

The answer is: A

 

 11- Considerations for endodontic treatment on primary teeth include:

  1. profound anesthesia at the fill appointment.
  2. prevention of overinstrumentation and overfilling.
  3. three-dimensional obturation with gutta-percha.
  4. All of the above.

 

 

 

 

 

 

The answer is: B

 

 12- Which of the following is not a contraindication for root canal therapy of primary teeth:

  1. Radiographic evidence of internal resorption in the roots.
  2. Apical restoration involving the roots.
  3. Presence of a dentigerous or follicular cyst.
  4. Mechanical or carious perforation of the floor of the pulp chamber.

 

 

 

 

 

The answer is: B

 

 13- Access openings on primary incisors:

  1. are from the facial surface.
  2. are from the lingual surface.
  3. are from the incisal surface.
  4. differ in location for maxillary and mandibular incisors.

 

 

 

 

 

 

The answer is: C

 

 14- Apexification is the treatment of choice for a permanent tooth with a wide-open apex when:

  1. the pulp is necrotic.
  2. there is a history of spontaneous pain with a carious exposure.
  3. there is a large mechanical exposure with profuse pulpal bleeding.
  4. All of the above.

 

 

 

 

 

 

The answer is: A