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Participants must answer at least 12 of 15 questions correctly (80%) to earn CE credit.

AGD - Self-Instruction Exercise No. 423 - Orthodontics
What every dentist and patient should know about accelerated orthodontic tooth movement

Self-Instruction Exercise No. 423
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Exercise No. 423
Subject Code: 370
Orthodontics

The 15 questions for this exercise are based on the article What every dentist and patient should know about accelerated orthodontic tooth movement on pages 16-20. This exercise was developed by Kim L. Capehart, DDS, PhD, in association with the General Dentistry Self-Instruction committee.

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

  • understand the biologic mechanisms of accelerated tooth movement;
  • identify various theories on the efficacy of accelerated tooth movement in adults; and
  • recognize the effects of invasive and noninvasive techniques in accelerated orthodontic tooth movement.

Answers for this exercise must be received by June 30, 2019.

  1. What percentage of orthodontic patients are adults?

    A. 20-25
    B. 26-30
    C. 31-35
    D. 36-40

  2. All of the following can extend orthodontic treatment lengths except one. Which is the exception?

    A. bone maturation
    B. decreased mineral turnover
    C. poor patient compliance
    D. previous orthodontic treatment

  3. Which cells are activated in bone remodeling in the classic theory of tooth movement?

    A. eosinophils
    B. neutrophils
    C. odontoblasts
    D. osteoclasts

  4. Bone resorption occurs on the side of the tooth that is subjected to pressure. Blood flow increases where the periodontal ligament is compressed.

    A. Both statements are true.
    B. The first statement is true; the second is false.
    C. The first statement is false; the second is true.
    D. Both statements are false.

  5. Temporary _________ facilitates rapid tooth movement in an environment that is more elastic and less rigid.

    A. osteomalacia
    B. osteopenia
    C. osteoporosis
    D. osteodystrophy

  6. The regional acceleratory phenomenon (RAP) attains maximum effect at _____ months.

    A. 1-2
    B. 3-4
    C. 5-6
    D. 7-8

  7. The RAP is critical because alveolar mineralization plays a fundamental role in tooth movement. With less mineralization of alveolar bone, tooth movement becomes more difficult.

    A. Both statements are true.
    B. The first statement is true; the second is false.
    C. The first statement is false; the second is true.
    D. Both statements are false.

  8. All of the following increase tooth movement except one. Which is the exception?

    A. vitamin D3
    B. thyroxine
    C. corticosteroid hormones
    D. nonsteroidal anti-inflammatory drugs

  9. Which of the following decreases tooth movement?

    A. parathyroid hormone
    B. vitamin D
    C. estrogen
    D. acetaminophen

  10. Cruz et al studied the effect of low-intensity laser therapy on orthodontic tooth movement and found that irradiated canines were retracted ___% faster than control canines over a 2-month period.

    A. 26
    B. 30
    C. 34
    D. 38

  11. Kim et al applied low-level gallium-aluminum-arsenide laser therapy at a wavelength of ____ nm.

    A. 808
    B. 818
    C. 828
    D. 838

  12. AcceleDent Optima is a Class ___ medical device that delivers pulsatile forces to the teeth and is claimed to accelerate tooth movement.

    A. I
    B. II
    C. III
    D. IV

  13. Nishimura et al measured the effects of vibration forces on tooth movement in rats at a frequency of ___ Hz.

    A. 30
    B. 40
    C. 50
    D. 60

  14. Flapless piezocision through the soft tissue saw a _____-fold increase in orthodontic tooth movement in the maxilla.

    A. 3.06
    B. 3.16
    C. 3.26
    D. 3.36

  15. Teixeira et al made shallow perforations with both a diameter and depth of _____ mm in adult Sprague-Dawley rats.

    A. 0.15
    B. 0.20
    C. 0.25
    D. 0.30


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
 
Did this exercise achieve its objectives? Yes No
Did this article present new information? Yes No
How much time did it take you to complete this exercise? mins


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