Salivary thiol levels and periodontal parameters assessed with a chromogenic strip

Self-Instruction Exercise No. 335
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Exercise No. 335
Subject Code: 490
Periodontics

The 15 questions for this exercise are based on the article, “Salivary thiol levels and periodontal parameters assessed with a chromogenic strip”, on pages 50-54. This exercise was developed by Daniel S. Geare, DMD, in association with the General Dentistry Self-Instruction committee.

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

  • identify the applications for high-powered magnification in general dentistry;
  • recognize the advantages of using high-powered magnification in general dentistry; and
  • understand how high-powered magnification can enhance patient treatment.

Answers for this exercise must be received by July 31, 2014.
  1. Periodontitis is associated with bacteria that

    A. are strictly anaerobic.
    B. use sulfate as an energy source.
    C. use carbohydrates as the sole energy source.
    D. are part of a single genus.

  2. Periodontal evaluations for this study included all of the following except one. Which is the exception?

    A. Plaque index
    B. Probing depth measurements
    C. DMF Index
    D. Attachment levels

  3. Which compound is detected by the test strip?

    A. Methyl mercapten
    B. Inflammatory cytokines
    C. “T” cells
    D. Sulfur oxides

  4. Saliva constituents include all of the following except one. Which is the exception?

    A. Electrolytes
    B. Enzymes
    C. Immunoglobulins
    D. Mucopolysaccharides

  5. The hypothesis indicated that thiol levels will be elevated in periodontal patients. Salivary thiol levels would be positively correlated to measurable periodontitis levels.

    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.

  6. Criteria for exclusion from this study included all of the following except one. Which is the exception?

    A. Subjects using anti-inflammatories
    B. Pregnant women
    C. Subjects who are at least 21 years old
    D. Subjects taking antibiotics

  7. The thiol-detecting strip detects thiol concentrations

    A. of 650 µm or greater.
    B. in crevicular exudates.
    C. of 0-600 µm.
    D. in thionitrobenzoate.

  8. This study showed that periodontal subjects have higher thiol compound scores than non-periodontal subjects. Cigarette smoking was not a factor in measured thiol levels.

    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.

  9. Thiol compounds play an important role in the pathogenesis of periodontitis because

    A. fibroblast cell function is enhanced.
    B. penetration of bacteria is impaired.
    C. they reduce prostaglandin production.
    D. epithelial cell function is impaired.

  10. The enzymatic reduction of sulfate

    A. is the primary source of thiol compounds.
    B. is initiated in the esophagus.
    C. is dependent on aerobic bacteria.
    D. requires essential amino acids only.

  11. One study showed that

    A. gingivitis has no effect on volatile sulfur compound levels.
    B. cysteine levels are lower in periodontal patients with deep pockets.
    C. thiol concentrations are age-dependent.
    D. the air in periodontal patients’ mouths has measurable volatile sulfur.

  12. Cigarette smoking can affect the reading of the color strip changes. This is because cigarette smoke contains sulfur compounds that may be adsorbed into oral mucosal tissues.

    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.

  13. Of the 96 subjects used in this study, how many were cigarette smokers?

    A. 16
    B. 23
    C. 32
    D. 45

  14. All of the following quick tests have been used to test for periodontitis except one. Which is the exception?

    A. Clinical
    B. Biochemical
    C. Microbiological
    D. Immunological

  15. For this particular assessment which teeth were specifically eliminated from scoring?

    A. Crowned teeth
    B. Primary teeth
    C. Fractured teeth
    D. Mobile teeth

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
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