Article 1: The Effect of Dental Sealants on Bacteria Levels in Caries Lesions: A Review of the Evidence 

1. What was the overall mean reduction in log10 total viable bacteria counts for sealed teeth?
Select answer A. 1.22 B. 1.98 C. 2.56 D. 3.41

2. Excluding the findings for deep dentinal lesions, what was the mean reduction over time in percentage of samples having viable bacteria?
Select answer A. 45.7 percent B. 71.8 percent C. 83.9 percent D. 91.3 percent

3. In the study reporting the highest percentage reduction in samples with Streptococcus mutans, what reduction was reported?
Select answer A. 41 percent B. 57 percent C. 63 percent D. 79 percent

4. What was the percentage reduction of viable lactobacilli for sealed teeth?
Select answer A. 27 percent B. 33 percent C. 42 percent D. 56 percent

Article 2: Exploring Four-Handed Delivery and Retention of Resin-Based Sealants 

1. What was the summary retention rate after three years for sealants placed using four-handed delivery?
Select answer A. 52.5 percent B. 64.6 percent C. 77.1 percent D. 83.0 percent

2. What was the summary retention rate after three years for sealants placed using two-handed delivery?
Select answer A. 58.3 percent B. 67.9 percent C. 76.7 percent D. 84.3 percent

3. Based on the regression modeling conducted, which one of the following did not reduce the likelihood of sealant retention?
Select answer A. four-handed delivery B. handpiece prophylaxis performed before placement C. having a dentist as the primary operator D. study conducted in a “high-income” country

4. Considering only the studies from high-income countries, what was the effect of four-handed delivery on sealant retention?
Select answer A. 9 percentage point reduction in retention B. no significant change in retention C. 3 percentage point improvement in retention D. 9 percentage point improvement in retention

Article 3: Salivary Dysfunction and Quality of Life in Sjögren Syndrome: A Critical Oral-Systemic Connection 

1. Each of the following correlated significantly with salivary flow rate among study participants except which one?
Select answer A. age B. Disease Damage Index score C. Oral Health Impact Profile (OHIP-14) sum D. symptom duration

2. Which one of the following correlated significantly with the number of autoimmune symptoms reported?
Select answer A. age B. Disease Damage Index score C. OHIP-14 sum D. symptom duration

3. For the study participants, which one of the following domains of the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36) differed from the norms for healthy women by the largest amount?
Select answer A. general health B. bodily pain C. social function D. physical function

4. Among study participants, each of the following SF-36 scores correlated significantly with the OHIP-14 sum except which one?
Select answer A. general health B. bodily pain C. social function D. physical function

Article 4: Direct Pulp Capping With Mineral Trioxide Aggregate: An Observational Study 

1. What was the overall pulpal survival rate in this study?
Select answer A. 72.58 percent B. 84.71 percent C. 91.22 percent D. 97.96 percent

2. Of the 15 teeth with open apexes at the time of restoration, how many progressed to complete root formation and apex closure?
Select answer A. none B. six C. 13 D. 15

3. What percentage of the treated teeth developed calcifications or pulp stones?
Select answer A. 3.9 percent B. 10.2 percent C. 18.6 percent D. 23.7 percent

4. How many of the patients in this study had recurrent caries on recall examination?
Select answer A. one B. three C. seven D. 14

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