Influence of an arginine-containing toothpaste on bond strength of different adhesive systems to eroded dentin

Self-Instruction Exercise No. 381
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Exercise No. 381
Subject Code: 017
Dental Materials

The 15 questions for this exercise are based on the article Influence of an arginine-containing toothpaste on bond strength of different adhesive systems to eroded dentin on pages 67-73. This exercise was developed by Charles Martello, DDS, MAGD, in association with the General Dentistry Self-Instruction committee.

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

  • understand the mechanism of action for bonding to eroded dentin;
  • understand the effect of arginine-containing toothpaste on bond strength; and
  • develop insight for successful treatment of dentinal sensitivity.

Answers for this exercise must be received by December 31, 2016.

  1. Which of the following results when a tooth is exposed to acid?

    A. reduced surface hardness
    B. increased mineral density
    C. reduced flexural modulus
    D. increased remineralization rate

  2. How does arginine-containing paste decrease dentinal sensitivity?

    A. formation of an occluding plug
    B. interruption of stimuli by an arginine and calcium bicarbonate layer
    C. deposition of an enamel-like material
    D. inhibition of the natural mechanism of occlusion

  3. Which of the following occurs when noncarious cervical lesions are left unrestored?

    A. decrease in sensitivity
    B. acceleration of enamel deposition
    C. further deterioration
    D. self-occlusion

  4. The goal of the study was to _____________.

    A. evaluate bond strength
    B. calculate arginine uptake
    C. evaluate dentinal sensitivity
    D. calculate calcium concentration

  5. How many root fragments were obtained for this study?

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

  6. The ________ surface of the root fragment was left untreated prior to the wear stage.

    A. palatal
    B. mesial
    C. distal
    D. buccal

  7. Each specimen was individually immersed in ______ mL of citric acid solution for _____ minutes.

    A. 5; 15
    B. 10; 30
    C. 15; 45
    D. 20; 60

  8. According to Goldstein & Lerner, how many brushing cycles are equivalent to 12 months of toothbrushing?

    A. 1,000
    B. 1,500
    C. 5,000
    D. 10,000

  9. The toothpaste slurry used for toothbrushing cycles had a toothpaste-water ratio of _______.

    A. 1:2
    B. 1:3
    C. 1:4
    D. 1:5

  10. During the restoration procedure, a ______-mm-high block of composite resin was built up in increments of ________ mm.

    A. 4; 1
    B. 4; 2
    C. 6; 1
    D. 6; 2

  11. During microtensile testing, traction was applied at a speed of ______ mm/min until failure.

    A. 0.5
    B. 0.7
    C. 0.9
    D. 1.0

  12. Type ______ failure is defined as total cohesive failure of the adhesive system.

    A. 1
    B. 2
    C. 3
    D. 4

  13. All of the following are characteristics of Pro-Argin technology in dentinal sensitivity treatment except one. Which is the exception?

    A. It initiates osmotic flow.
    B. It uses 8% arginine and calcium carbonate.
    C. It accelerates deposition of calcium and phosphate.
    D. It occludes exposed dentinal tubules.

  14. The results demonstrated that arginine-containing toothpaste had a significant effect on the bond strength of eroded dentin compared to arginine-free toothpaste and artificial saliva. Based on these results, the null hypothesis was accepted.

    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.

  15. What was the pH of the self-etching system?

    A. 2.1
    B. 3.2
    C. 4.3
    D. 5.4


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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