Fracture resistance of permanent anterior incisors using fiber-reinforced composite posts

Self-Instruction Exercise No. 346
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Exercise No. 346
Subject Code: 250
Operative (Restorative) Dentistry

The 15 questions for this exercise are based on the article, "Fracture resistance of permanent anterior incisors using fiber-reinforced composite posts", on pages 37-42. This exercise was developed by Merlin Ohmer, DDS, FAGD, in association with the General Dentistry Self-Instruction committee.

Reading the article and successfully completing this exercise will enable you to better understand:

  • the use of posts in restoring teeth;
  • changes to teeth after non-surgical endodontic treatment; and
  • the benefit of fiber-reinforced composite (FRC) posts.

Answers for this exercise must be received by February 28, 2015.
  1. The teeth used in the study were separated into a total of ___ groups.

    A. 2
    B. 3
    C. 4
    D. 6

  2. Posts traditionally have provided all of the following to endodontically treated teeth except one. Which is the exception?

    A. coronal strength
    B. root strength
    C. retention
    D. stability

  3. FRC posts are composed of various types of reinforcing fibers bound to a ___________ matrix.

    A. carbon
    B. polymer
    C. silicone
    D. ceramic

  4. All of the following are benefits of FRC posts except one. Which is the exception?

    A. radiolucency
    B. improved esthetics
    C. biocompatibility
    D. adhesive capability

  5. The teeth used in the study were

    A. central incisors.
    B. first premolars.
    C. first molars.
    D. a mixture of teeth.

  6. All of the teeth used in the study were

    A. thermocycled.
    B. non-thermocycled.
    C. stored in 1% Chloramine-T.
    D. stored in 12% chlorine.

  7. The teeth in the study were obturated with gutta percha using which technique?

    A. thermal
    B. warm vertical
    C. solid core
    D. lateral

  8. The teeth awaiting testing were stored in

    A. formalin.
    B. tap water.
    C. distilled water.
    D. normal saline.

  9. The teeth were subjected to a load angle of ____ degrees.

    A. 30
    B. 60
    C. 90
    D. 120

  10. When applying point pressure to the center of a tapered cylinder, the highest tensile stress will occur in the

    A. apical area.
    B. mid-root area.
    C. coronal area.
    D. point of pressure.

  11. When asymmetric loading was used, the highest tensile stress occurred at the

    A. apical area.
    B. mid-root area.
    C. coronal area.
    D. point of pressure.

  12. All of the following were used in the study’s statistical analyses except one. Which is the exception?

    A. ANOVA
    B. JMP-9
    C. Tukey
    D. Treekey

  13. The most important aspect in the successful restoration of an endodontically treated tooth is the

    A. type of restorative material used.
    B. quantity of natural tooth remaining.
    C. length of post.
    D. type of post.

  14. Anterior tooth occlusion is described as

    A. multiple impacts.
    B. eccentric torque.
    C. angular force.
    D. singular trauma.

  15. FRC posts have which effect on root fracture resistance?

    A. improved
    B. neutral
    C. detrimental
    D. inconclusive

Evaluation
Please respond to the statements below, using the following scale:
1 Poor; 2 Below average; 3 Average; 4 Above average; 5 Excellent
Practicality of the content 1 2 3 4 5
Benefit to your clinical practice 1 2 3 4 5
Quality of illustrations 1 2 3 4 5
Clarity of objectives 1 2 3 4 5
Clarity of exercise questions 1 2 3 4 5
Relevance of exercise questions 1 2 3 4 5
 
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Did this article present new information? Yes No
How much time did it take you to complete this exercise? mins

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