Article 1: Improved Denture Retention in Patients With Retracted Tongues 

1. What was the average percentage increase in mandibular denture retention with ideal tongue resting position, as compared with retracted tongue resting position?
Select answer A. 39.72 percent B. 44.19 percent C. 57.73 percent D. 63.48 percent

2. Which of the following had the lowest mean mandibular denture retention?
Select answer A. Class I with retracted tongue resting position B. Class II with retracted tongue resting position C. Class II with ideal tongue resting position D. Class III with ideal tongue resting position

3. Which one of the following had the highest mean mandibular denture retention?
Select answer A. Class I with retracted tongue resting position B. Class II with retracted tongue resting position C. Class II with ideal tongue resting position D. Class III with ideal tongue resting position

4. Which of the following had the greatest percentage increase in mandibular retention with ideal tongue resting position, as compared with retracted tongue resting position?
Select answer A. Class I had the greatest percentage increase. B. Class II had the greatest percentage increase. C. Class I and Class II were similar and had greater percentage increases than did Class III. D. Class I and Class III were similar and had greater percentage increases than did Class II.

Article 2: The Relationship Between Self-Reported History of Endodontic Therapy and Coronary Heart Disease in the Atherosclerosis Risk in Communities Study 

1. Each of the following characteristics was more common among those reporting a history of endodontic treatment except which one?
Select answer A. higher levels of education B. higher income C. greater extent of attachment loss D. larger number of crowns

2. Which one of the following groups had the lowest prevalence of coronary heart disease?
Select answer A. no endodontic treatment and 24 or fewer teeth B. one endodontic treatment and 24 or fewer teeth C. no endodontic treatment and 25 or more teeth D. one endodontic treatment and 25 or more teeth

3. Which one of the following groups had the highest prevalence of pocket depth greater than 5 millimeters?
Select answer A. no endodontic treatment and 24 or fewer teeth B. one endodontic treatment and 24 or fewer teeth C. no endodontic treatment and 25 or more teeth D. one endodontic treatment and 25 or more teeth

4. For people with 25 or more teeth, what was the increased risk, or odds ratio, for coronary heart disease that was associated with having two or more endodontic treatments versus none?
Select answer A. 1.19 B. 1.44 C. 1.62 D. 1.98

Article 3: The Validity of Pulp Testing: A Clinical Study 

1. What was the sensitivity reported for testing with Hygenic Endo-Ice Green (Coltène Whaledent, Cuyahoga Falls, Ohio) in this study?
Select answer A. 76 percent B. 82 percent C. 89 percent D. 94 percent

2. What was the specificity for electronic pulp testing in this study?
Select answer A. 67 percent B. 75 percent C. 87 percent D. 90 percent

3. What was the positive predictive value for vitality when testing with carbon dioxide (CO2)?
Select answer A. 80 percent B. 86 percent C. 90 percent D. 97 percent

4. What was the negative predictive value for CO2 testing in this study?
Select answer A. 61 percent B. 67 percent C. 73 percent D. 81 percent

Article 4: The Efficacy of Six Local Anesthetic Formulations Used for Posterior Mandibular Buccal Infiltration Anesthesia 

1. Which one of the anesthetic agents was associated with the highest mean visual analog scale scores for pain on injection in this study?
Select answer A. 2 percent lidocaine with 1:100,000 epinephrine B. 0.5 percent bupivicaine with 1:200,000 epinephrine C. 4 percent prilocaine with 1:200,000 epinephrine D. 4 percent articaine with 1:100,000 epinephrine

2. Which one of the anesthetic agents was associated with the largest mean increase in electrical pulp test (EPT) scores relative to baseline?
Select answer A. lidocaine 2 percent with 1:100,000 epinephrine B. bupivicaine 0.5 percent with 1:200,000 epinephrine C. prilocaine 4 percent with 1:200,000 epinephrine D. articaine 4 percent with 1:100,000 epinephrine

3. Which one of the anesthetic agents was associated with the largest percentage of subjects achieving complete pulpal anesthesia according to EPT results?
Select answer A. lidocaine 2 percent with 1:100,000 epinephrine B. bupivicaine 0.5 percent with 1:200,000 epinephrine C. prilocaine 4 percent with 1:200,000 epinephrine D. articaine 4 percent with 1:100,000 epinephrine

4. Which one of the anesthetic agents was associated with the lowest degree of self-reported numbness?
Select answer A. lidocaine 2 percent with 1:100,000 epinephrine B. bupivicaine 0.5 percent with 1:200,000 epinephrine C. prilocaine 4 percent with 1:200,000 epinephrine D. articaine 4 percent with 1:100,000 epinephrine

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