The trusted resource for dental professionals
Brought to you by
Australia
English
Toggle Dropdown
×
Choose Your Region
US
Canada
English
Canada
Français
Mexico
Brazil
Argentina
Chile
Colombia
Venezuela
Peru
Guatemala
Ecuador
Panama
Costa Rica
Dominican Republic
Latinoamérica
UK
Nordics
France
Germany
Austria
Switzerland
Netherlands
Belgium
Poland
Spain
Australia
Login
|
Register
Search
PROFESSIONAL EDUCATION
toggle menu
Overview
Events
Your Courses And Activities
Dental Continuing Education Courses
Faculty Resources
News
Student Resources
Case Studies
PATIENT EDUCATION
toggle menu
Overview
Patient Materials
Children's Dental Health
RESEARCH
toggle menu
Overview
Dental Research Database
Media Library
PRACTICE MANAGEMENT
toggle menu
Overview
Production
Collections
Team Building
Scripting
Case Acceptance
New Patient Experience
Hygiene
Scheduling
Marketing
PRODUCTS
toggle menu
Overview
Electric Toothbrushes
Manual Toothbrushes
Dental Floss
Toothpastes
Mouth Rinse
Interdental
Whitening
Order Samples
Search
Clear
Submit
Home
Professional Dentist Education
Dental Continuing Education Courses
Course Number: 42
Course Contents
Test Preview
Professional Dental Education
Dental Continuing Education Courses
COURSE INTRODUCTION
Course Contents
Test
Your Courses & Activities
Faculty Resources
Dental Events
Dentistry News
Student Resources
Case Studies
Select Dental Education Author
Biofilm: A New View of Plaque
Test Preview
Course Author(s):
Pamela R. Overman, EdD, RDH
Save your progress
CONTENT
Toggle Dropdown
Course Contents
Overview
Learning Objectives
Introduction
Biofilm
Changing Views of Plaque
Plaque as a Biofilm
New Frontiers
Conclusion
References / Additional Resources
Test Preview
Previous
TAKE THE TEST
Test Preview
A biofilm is _______________.
A. a loose collection of free-floating bacteria
B. a calcified collection of bacteria that cannot be easily removed
C. an acellular translucent, homogeneous film covering moist surfaces
D. a well-organized, cooperating community of microorganisms
A positive use of biofilm is _______________.
A. detoxification of human waste products
B. lining on indwelling catheters
C. coating in fish tanks
D. layer in dental unit water lines
The specific plaque hypothesis would support the following belief:
A. "Where there is more plaque, there is more disease."
B. "All bacteria in plaque contribute to gingivitis and periodontitis."
C. "Calculus plays a major role in causing periodontitis."
D. "The presence of bacterial plaque is necessary to develop periodontal disease, but not sufficient to guarantee disease."
Researchers currently believe that all of the following bacteria play a role as periodontal pathogens EXCEPT:
A. T. pallidum
B. P. gingivalis
C. A. actinomycetemcomitans
D. B. forsythus
Scientists have had difficulty in identifying specific periodontal pathogens because _______________.
A. periodontal pockets contain both pathogens and non-pathogens
B. the different bacteria in periodontal pockets require different culture media
C. periodontal disease goes through active and quiescent periods
D. All of the above.
To study biofilms, scientists have used newer microscopy techniques such as _______________.
A. wet mount microscopy
B. scanning electron microscopy
C. confocal scanning laser microscopy
D. smear microscopy
Which of the following characteristics is typical of a bacteria in a biofilm?
A. Bacteria communicate with each other by sending out chemical signals.
B. Bacteria are dispersed more or less evenly through the plaque.
C. The environment surrounding bacteria consists of the same or similar pHs.
D. Bacteria exist in isolation from each other.
Given the nature of bacteria in biofilm, which techniques may be helpful in controlling oral biofilms?
A. Keep bacteria from communicating with each other.
B. Prevent fluid flow between microcolonies of bacteria in a biofilm.
C. Change the oxygen concentration with the biofilm microenvironments.
D. All of the above.
How can a subgingival biofilm formation protect periodontal pathogens from locally delivered antimicrobial agents?
A. The biofilm prevents the antimicrobial agent from entering the periodontal pocket.
B. The biofilm matrix serves as a protective barrier.
C. The biofilm fluid channels direct the antimicrobial agent out of the pocket.
D. The biofilm changes the pH of the antimicrobial agent and inactivates the agent.
Possible new strategies to control oral biofilms include all of the following EXCEPT:
A. Control of biofilm nutrient sources.
B. Alteration of pH within biofilm microcolonies.
C. Varying the oxygen concentration within biofilm.
D. Addition of systemic antibiotics.
TAKE THE TEST
Previous
Page 10 of 10