What every dentist should know about tea

Self-Instruction Exercise No. 357
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Exercise No. 357
Subject Code: 150
Nutrition

The 15 questions for this exercise are based on the article, “What every dentist should know about tea,” on pages 64-66. This exercise was developed by Thomas C. Johnson, DMD, MAGD, in association with the General Dentistry Self-Instruction committee.

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

  • the differences between the 4 types of teas;
  • the potential health benefits of tea; and
  • the potential health risks of tea.

Answers for this exercise must be received by August 31, 2015.
  1. When did the Chinese start drinking tea?

    A. 1st century BCE
    B. 5000 BCE
    C. 3rd millennium BCE
    D. 350th century BCE

  2. Chinese tea is derived from which of the following plants?

    A. Camillia japonica
    B. Aspalathus linearis
    C. Camillia oleifera
    D. Camellia sinensis

  3. Which tea is steamed at extremely high temperatures?

    A. black
    B. green
    C. oolong
    D. white

  4. Which tea is withered in sunlight for up to 18 hours?

    A. black
    B. green
    C. oolong
    D. white

  5. Which tea is bruised in bamboo baskets?

    A. black
    B. green
    C. oolong
    D. white

  6. Which tea undergoes no processing or fermentation?

    A. black
    B. green
    C. oolong
    D. white

  7. Which tea has epigallocatechin-3-gallate (EGCG) as its principle bioactive antioxidant?

    A. black
    B. green
    C. oolong
    D. white

  8. Which of the following best describes the function of antioxidant catechins?

    A. act as electron recipients
    B. block formation of reactive oxygen species (ROS)
    C. donate electrons to reduce the ROS
    D. oxidize the ROS

  9. All of the following may explain the cardiovascular benefits of tea except one. Which is the exception?

    A. inhibit platelet aggregation
    B. promote vasodilation
    C. prevent oxidant injury
    D. reduce C-reactive protein

  10. When tea is consumed, the polyphenols are absorbed unmodified. All polyphenols easily pass through the blood brain barrier.

    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.

  11. A number of new studies have suggested that the compounds found in ___________ tea may be helpful in treating patients with Alzheimer’s disease and other forms of dementia.

    A. black
    B. green
    C. oolong
    D. white

  12. A recent study by Connors et al reported that treatment with EGCG can trigger apoptosis in prostate cancer cells. Other studies record an increased risk of cancer.

    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. According to the article, the Asian Paradox states that the consumption of green tea protects smokers against

    A. prostate cancer.
    B. arteriosclerosis.
    C. hypertension.
    D. ulcers.

  14. Studies have shown that both __________ and __________ teas reduce the risk for dental caries.

    A. green; oolong
    B. black; white
    C. green; white
    D. oolong; black

  15. The fluoride content of black tea has been shown to be as high as 8.3 ppm. This high fluoride content could put patients at risk for skeletal fluorosis and developmental tooth defects.

    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.

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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