Article 1: Tooth Loss, Dementia and Neuropathology in the Nun Study 

1. What is the estimated change in risk of developing Alzheimer disease among people who inherit a single E4 allele of apolipoprotein (apoE4)?
Select answer A. 50 percent lower risk B. two- to fivefold greater risk C. six- to eightfold greater risk D. about 10-fold greater risk

2. What was the increased likelihood, or odds ratio, of having dementia at the first examination among those who did not have the apoE4 allele and had one to nine teeth?
Select answer A. no significant increase B. odds ratio of about two C. odds ratio of about four D. odds ratio of about six

3. What percentage of study participants who had the apoE4 allele and had 17 to 28 non–third molars also had dementia at the time of the first examination?
Select answer A. 21 percent B. 38 percent C. 50 percent D. 68 percent

4. Among those who did not have dementia at the first examination and had zero to nine teeth, what was the increase in risk of subsequent development of dementia?
Select answer A. no significant increase B. odds ratio of 2.2 C. odds ratio of 3.7 D. odds ratio of 6.0

Article 2: The Use of Compound Topical Anesthetics: A Review 

1. Which one of the following does not combine ester- and amide-type anesthetics?
Select answer A. lidocaine, adrenaline/epinephrine and tetracaine (LET) B. lidocaine, tetracaine and phenylephrine (TAC 20 percent Alternate) C. 2.5 percent lidocaine, 2.5 percent prilocaine (EMLA cream, AstraZeneca Pharmaceuticals, Wilmington, Del.) D. lidocaine, prilocaine and tetracaine (Profound)

2. Which one of the following is an ester-type anesthetic that can result in anaphylactic shock for patients with para-aminobenzoic acid allergy?
Select answer A. tetracaine B. prilocaine C. lidocaine D. mepivacaine

3. Which one of the following contains prilocaine, which is contraindicated for patients with glucose-6-phosphate dehydrogenase deficiency?
Select answer A. Triple Kwick Anesthetic Gel B. Tetracaine lollipops C. Betacaine Plus ointment D. Lasergel

4. Which one of the following products contains the highest concentration of lidocaine?
Select answer A. Lasergel Plus 10/10 B. N*E*W* topical anesthetic C. Photocaine gel D. Extra Strength Triple Anesthetic Cream

Article 3: A Comparison of Older and Newer Versions of Intraoral Digital Radiography Systems: Diagnosing Noncavitated Proximal Carious Lesions 

1. Which one of the following systems was found to have the lowest sensitivity in correctly identifying carious lesions?
Select answer A. Digora FMX (Soredex, Tuusula, Finland) B. Digora Optime (Soredex) C. Schick CDR (Schick Technologies, Long Island City, N.Y.) D. Schick CDR Wireless (Schick Technologies)

2. Which one of the following systems was found to have the highest specificity in correctly identifying carious lesions?
Select answer A. Digora FMX B. Digora Optime C. CDR D. CDR Wireless

3. Which system had the highest overall accuracy in this study?
Select answer A. Digora FMX B. Digora Optime C. CDR D. CDR Wireless

4. Which system had the lowest positive predictive value in this study?
Select answer A. Digora FMX B. Digora Optime C. CDR D. CDR Wireless

Article 4: The In Vivo Contamination of Air-Driven Low-Speed Handpieces With Prophylaxis Angles 

1. What percentage of the specimens from all of the handpieces and prophylaxis angles produced bacterial growth?
Select answer A. 56.3 percent B. 61.4 percent C. 75.1 percent D. 82.2 percent

2. What percentage of two-piece handpieces were contaminated by either anaerobic or aerobic bacteria?
Select answer A. 63.1 percent B. 76.7 percent C. 89.2 percent D. 93.3 percent

3. Which one of the following statements about the relationship between handpiece/prophylaxis angle systems and mean total bacterial count is correct?
Select answer A. Two-piece handpieces always had higher mean counts. B. Metal prophylaxis angles always had lower mean counts. C. Plastic prophylaxis angles on single-unit handpieces always had higher mean counts. D. No significant differences in mean counts were observed for any of the systems.

4. Overall, which one of the following handpiece/prophylaxis angle systems had the lowest mean bacterial count?
Select answer A. TS2 Prophy Angle with two-piece handpiece B. Nupro revolv firm with two-piece handpiece C. Original Green with single-piece handpiece D. TS2 Prophy Angle with single-piece handpiece

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