Article 1: Managing the Complexity of a Dynamic Biofilm 

1. Which of the complexes described by Socransky and colleagues includes the bacteria species Porphyromonas gingivalis?
Select answer A. purple complex B. red complex C. orange complex D. yellow complex

2. Which stage of biofilm growth is characterized by expression of new antigens and enhanced genetic exchange?
Select answer A. Stage I B. Stage II C. Stage III D. Stage IV

3. At which point of dental plaque formation do gram-negative organisms predominate?
Select answer A. pellicle formation B. first stage of maturation C. second stage of maturation D. third stage of maturation

4. Which one of the following was not described as a factor in the pathogenicity of dental plaque biofilms?
Select answer A. It is difficult for inflammatory cells to phagocytize dental biofilm. B. Antibiotic agents may have difficulty penetrating into the full depth of a biofilm. C. Only slow-growing, nutrient-limited biofilm cells are susceptible to antimicrobial agents. D. Mutations and gene transfer can result in loss of susceptibility to antimicrobial agents.

Article 2: The Rationale for the Daily Use of an Antimicrobial Mouthrinse 

1. Approximately what percentage of plaque has been found to be removed after one minute of brushing with a powered toothbrush?
Select answer A. 20 percent B. 29 percent C. 37 percent D. 49 percent

2. What was the prevalence of gingivitis among people aged 30 to 90 years in the Third National Health and Nutrition Examination Survey?
Select answer A. 34.9 percent B. 41.1 percent C. 50.3 percent D. 62.4 percent

3. Which one of the following can be expected to provide the largest reservoir of oral bacteria?
Select answer A. posterior facial tooth surfaces B. anterior lingual tooth surfaces C. posterior lingual tooth surfaces D. oral mucosal tissues

4. In a study of adults 25 to 73 years of age, what proportion of people was found to be entirely plaque-free?
Select answer A. none B. about one-fourth C. about one-half D. about three-fourths

Article 3: Antimicrobial Mouthrinse as Part of a Comprehensive Oral Care Regimen: Safety and Compliance Factors 

1. Each of the following was mentioned as a concern sometimes raised regarding risks associated with using alcohol-containing mouthrinses except which one?
Select answer A. periodontal attachment loss B. oral cancer C. sensation of dry mouth D. burning or irritation

2. Which one of the following appears to have the greatest validity as a potential risk associated with using alcohol-containing mouthrinses?
Select answer A. periodontal attachment loss B. oral cancer C. sensation of dry mouth D. burning or irritation

3. Approximately what percentage of patients is highly compliant with suggested oral hygiene procedures up to 30 days after receiving instructions?
Select answer A. 5 to 10 percent B. 15 to 25 percent C. 30 to 50 percent D. 55 to 65 percent

4. Approximately what percentage of people in need of health-related behavioral change are estimated to be willing to take action?
Select answer A. 10 percent B. 20 percent C. 30 percent D. 40 percent

Article 4: Risk Assessment and Management of Periodontal Disease 

1. When men were assessed at a score of five with the Periodontal Risk Calculator (PRC), what percentage had lost one or more periodontally affected teeth after 15 years?
Select answer A. 19.4 percent B. 27.8 percent C. 62.9 percent D. 83.7 percent

2. Which one of the following was not listed as a factor used in calculating a patient’s PRC score?
Select answer A. age B. smoking history C. presence of one or more root caries lesions D. diabetes history

3. Each of the following is a direct effect of nicotine except for which one?
Select answer A. diminished collagen synthesis B. diminished protein secretion C. increased calculus deposits D. impaired wound healing

4. Approximately what percentage of the U.S. population has diabetes mellitus?
Select answer A. 1 percent B. 3 percent C. 5 percent D. 7 percent

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