To enroll in Self-Instruction, visit the Products Page. If you have any questions, or if you are unsure of your enrollment status, please call the Manager, Examinations and Self-Instruction, toll-free at 888.243.3368, ext. 4336.

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

Note: Exercise 994 is a special edition of the Self-Instruction Exercises and is only available to those members/nonmembers who attended the 2017 Scientific Session in Las Vegas. If you submit exercise 994 but did not attend the Scientific Session, the exercise will not be processed and your payment will be returned.

AGD - Self-Instruction Exercise No. 400 - Cariology
Effectiveness of casein phosphopeptide–amorphous calcium phosphate and lysozyme, lactoferrin, and lactoperoxidase in reducing Streptococcus mutans counts in dentinal caries

Self-Instruction Exercise No. 400
Member Information
Required for AGD members
Required for non-members
Are you an AGD member?
Yes    No
If Yes, please enter your AGD Number:
Full Name (First & Last):
Address:
Address 2:
City:
State/Province:
ZIP/Postal Code:
Country:
E-mail:
Promotional Code


Payment Information
I am currently enrolled in the Self-Instruction program. (If you are unsure of your enrollment status, please call 888.243.3368, ext. 4336.)
Enroll me for Self-Instruction so that I can submit this exercise. My credit card information is entered below. I understand that my card will be charged $30 if I am an AGD member and $50 if I am a non-member.
 
Card Type  
Visa          MasterCard    American Express   
Card Number  
Expiration Date    


Exercise No. 400
Subject Code: 011
Cariology

The 15 questions for this exercise are based on the article Effectiveness of casein phosphopeptide–amorphous calcium phosphate and lysozyme, lactoferrin, and lactoperoxidase in reducing Streptococcus mutans counts in dentinal caries on pages 47-50. This exercise was developed by Anthony S. Carroccia, DDS, MAGD, ABGD, in association with the General Dentistry Self-Instruction committee.

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

  • comprehend the mechanism of action of casein phosphopeptide–amorphous calcium phosphate (CPP-ACP) and each component of lysozyme, lactoferrin and lactoperoxidase (LLL);
  • know the histologic differences of caries infection; and
  • understand why reduction of Streptococcus mutans is so critical in dentistry.

Answers for this exercise must be received by February 28, 2018.

  1. How many teeth were used for the study?

    A. 20
    B. 40
    C. 60
    D. 80

  2. Which type of tooth was selected?

    A. central incisors
    B. canines
    C. second premolars
    D. third molars

  3. Caries can be divided into surface/infected lesions and deep/affected lesions. Affected dentin shows odontoblasts that can remineralize.

    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.

  4. There are 4 distinct layers of carious dentin. Layers 2, 3, and 4 correspond to enamel that can be reversibly altered by the caries process.

    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. Anticariogenicity is shown in CPP-ACP by __________.

    A. separating the loose calcium ions to allow more rapid fluorapatite formation
    B. attracting calcium and phosphate to increase the concentration for remineralization
    C. binding the negative cell wall of S mutans, making it unable to attach to the pellicle
    D. raising the pH of lactic acid by-products of the bacteria to inactive it

  6. Which of the following is the mechanism of action for lysozyme?

    A. enzymatic activity to disrupt bacterial cells
    B. electrical disruption of sodium potassium pumps
    C. phagocytosis of the 30S ribosome
    D. hydrolysis of starch into sugars

  7. What is the role of lactoperoxidase?

    A. cleaves lactose sugar from hydrogen peroxide
    B. catalyzes conversion of thiocyanate to hypothiocyanate
    C. converts hypothiocyanate into thiocyanate
    D. combines lactose and hydrogen peroxide in the presence of adenosine triphosphate and water

  8. Lactoferrin works to reduce the availability of _________ to bacteria, thus making it both bacteriostatic and bactericidal.

    A. oxygen
    B. magnesium
    C. iron
    D. hydrogen

  9. The inclusion criteria included all of the following except one. Which is the exception?

    A. absence of restorations
    B. absence of cracks or fractures
    C. absence of abrasion
    D. good health

  10. All of the following solutions were used for storage or washing except one. Which is the exception?

    A. 0.9% sodium chloride
    B. 0.02% sodium azide
    C. saline solution with 10% sucrose
    D. deionized distilled water at 4°C

  11. The teeth were sterilized by exposure to which wave form?

    A. gamma
    B. infrared
    C. microwave
    D. Roentgen

  12. There were ___ groups and ___ applications of each agent.

    A. 2; 2
    B. 2; 3
    C. 3; 2
    D. 3; 3

  13. Which tests were used to analyze the data collected?

    A. analysis of variance and chi-square
    B. Kruskal-Wallis test and Student-Newman-Keuls
    C. paired t test and Wilcoxon rank sum
    D. Mann-Whitney U test and Pearson correlation

  14. After 3 LLL applications, there was a significant reduction of S mutans. After all 3 applications of CPP-ACP, there was a significant reduction of S mutans.

    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. All of the following are commonly studied antimicrobials to control bacteria in caries except one. Which is the exception?

    A. arsenic compounds
    B. antibiotics
    C. chlorhexidine
    D. triclosan


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


Cancel