Instructions—Contemporary Oral Hygiene offers 2 Continuing Education (CE) credit hours per issue. To receive credit, record your answers on the enclosed answer sheet or submit them on a separate piece of paper. You may also phone your answers in to (888) 596-4605, or fax them to (703) 404-1801. Be sure to include your name, address, phone number, the last 4 digits of your Social Security number, and method of payment. The deadline for submission of quizzes is 12 months after the date of publication. Participants must attain a score of 70% on each quiz to receive credit. To register, call (888) 596-4605. Participants are urged to contact their state registry boards for special CE requirements.
1. In 1983, Khatiblou and Ghodossi reported that what actually promoted reattachment of connective tissue to the instrumented root surfaces? a. acetic acid b. surface roughness c. bovine collagen d. cyanoacrylate
2. Stroke length is controlled by the: a. power setting. b. frequency setting. c. voltage setting. d. kilovoltage setting.
3. What is the action created by the formation and collapse of bubbles? a. cavitation b. agitation c. turbulence d. acoustic streaming
4. Most periodontal experts today report that the best results for nonsurgical periodontal therapy are achieved by: a. antibiotic therapy (local and systemic). b. power-driven devices. c. hand instrumentation. d. a blended approach.
5. What is a primary factor in patient discomfort? a. the amount of localized inflammation b. tissue distention c. the amount of calculus d. the bacterial makeup in the sulcus
6. Although all modern pacemakers are shielded, care must be taken if magnetostrictive ultrasonic or ultrasonic instrument cleaning devices are used that: a. generate a magnetic field. b. generate an electric field. c. generate secondary harmonics. d. are a source for bacterial endocarditis.
7. Use of a power-driven scaler is contraindicated with patients who are at risk of: a. infection. b. hypoglycemia. c. aspiration. d. toxicity.
8. Which tips should be used for light calculus deposits and biofilm disruption in pockets > 4 mm? a. standard-diameter b. slim-diameter c. straight or universal d. curved
9. It is critical with both calculus removal and deplaquing that: a. the tip be held in one spot. b. the tip be constantly moving. c. there be no bleeding. d. the tissue be reflected (ie, flap).
10. Disruption and control of what are essential to periodontal health: a. gram-positive periodontal pathogens. b. gram-negative periodontal pathogens. c. facultative anaerobes. d. biofilms.
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