Article 1: The Influence of Tobacco Smoking on the Outcomes Achieved by Root-Coverage Procedures: A Systematic Review 

1. For subepithelial connective-tissue graft procedures, each of the following outcomes was improved for nonsmokers, compared with smokers, except which one?
Select answer A. changes in gingival recession B. changes in clinical attachment level C. width of keratinized tissue D. percentage of complete root coverage

2. For coronally advanced flap procedures, which one of the following outcomes was improved for nonsmokers, compared with smokers?
Select answer A. changes in gingival recession B. changes in clinical attachment level C. width of keratinized tissue D. percentage of complete root coverage

3. For guided tissue regeneration, what percentage of complete root coverage was noted for smokers?
Select answer A. 46.7 percent B. 38.5 percent C. 22.9 percent D. 11.1 percent

4. Which of the following interventions appeared to be associated with the least difference in outcomes for smokers and nonsmokers?
Select answer A. only subepithelial connective-tissue graft procedures B. only coronally advanced flap procedures C. only guided tissue regeneration D. both subepithelial connective-tissue graft procedures and guided tissue regeneration

Article 2: Down Syndrome and Sleep-Disordered Breathing: The Dentist’s Role 

1. What is the estimated risk of occurrence of Down syndrome among children born to women older than 40 years?
Select answer A. one in 100 births B. one in 500 births C. one in 1,000 births D. one in 5,000 births

2. In a study of children with documented obstructive sleep apnea, what percentage of the parents reported having suspicions that their children had a sleep disturbance?
Select answer A. 44 percent B. 32 percent C. 20 percent D. 4 percent

3. Each of the following anatomical findings should increase a dentist’s suspicion of sleep-disordered breathing except which one?
Select answer A. narrowed oropharyngeal inlet B. tonsillar hypertrophy C. long palate D. prognathia

4. What reduction in the respiratory disturbance index is likely to result from use of an oral appliance by a patient with sleep apnea?
Select answer A. 70 to 80 percent B. 60 to 70 percent C. 50 to 60 percent D. 40 to 50 percent

Article 3: The Efficacy of a Repeated Infiltration In Prolonging Duration of Pulpal Anesthesia in Maxillary Lateral Incisors 

1. For both groups combined, what was the average length of time observed after the first injection for onset of pulpal anesthesia?
Select answer A. 5.6 minutes B. 4.7 minutes C. 3.3 minutes D. 2.9 minutes

2. What was the average point in time when significantly improved analgesia was first observed for patients receiving a second infiltration injection?
Select answer A. 55 minutes B. 49 minutes C. 42 minutes D. 37 minutes

3. On the basis of the authors’ definition, what percentage of people in the repeated infiltration group had “anesthesia of short duration”?
Select answer A. 70 percent B. 42 percent C. 19 percent D. 8 percent

4. What percentage of people in the mock infiltration group had “anesthesia of short duration”?
Select answer A. 70 percent B. 42 percent C. 19 percent D. 8 percent

Article 4: The Depth of Cure of Clear Versus Opaque Sealants as Influenced by Curing Regimens 

1. What was the greatest depth to which the clear sealant was cured to a consistent hardness?
Select answer A. 4 millimeters B. 3 mm C. 1 mm D. 0.5 mm

2. What was the greatest depth to which the opaque sealant (Delton LC Opaque, Dentsply International, York, Pa.) was cured to a consistent hardness?
Select answer A. 4 mm B. 3 mm C. 1 mm D. 0.5 mm

3. What was the greatest depth to which the opaque sealant (Clinpro Sealant, 3M ESPE, St. Paul, Minn.) was cured to a consistent hardness?
Select answer A. 4 mm B. 3 mm C. 1 mm D. 0.5 mm

4. Which of the following curing regimens was associated with the lowest depth of cure?
Select answer A. 40 seconds at 0-mm distance B. 20 seconds at 0-mm distance C. 40 seconds at 2.2-mm distance D. 20 seconds at 2.2-mm distance

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