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Dental Bacteriology Exam 1
Propionibacterium
11
Biology
Graduate
08/31/2009

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Term
What is another way to describe propionibacterium?
Definition
anaerobic diptheroids
Term
What are the common species of Propionibacterium found in the oral cavity?
Definition
P. acnes, and P. propionica
Term
What is the morphology of propionibacterium?
Definition
G+, diptheroid-like (club-shaped) rods
Term
What is the metabolism of propionibacterium?
Definition
microaerophiles or anaerobes--- can occur within the same species (unusual)
Term
What is the major by-product of carbohydrate metabolism with propionibacterium?
Definition
propionic acid
Term
Where is propionibacterium found as part of the normal flora?
Definition

1. GI

2. upper respiratory tract

3. skin (most common)

Term
Which bacteria do propionibacterium attach to in dental plaque?
Definition

1. Streptococcus gordonii

2. fusobacterium nucleatum

Term
Where in the oral cavity can you find propionibacterium?
Definition
a member of dental plaque "climax community"
Term
propionibacterium is what kind of a climax community?
Definition
late/early
Term
What are the clinical manifestations of propionibacterium?
Definition

1. development of root caries

2. associated with inflammatory process in acne

3. abscess development of the jaw (less common)

4. infection of tear ducts (less common)

5. actinomycosis

Term
Because they are a part of the normal skin flora, propionibacterium are the most common _________ contaminents of __________
Definition
anaerobic contaminents of blood cultures
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