L31 : Introduction to oral and dental infections

Question 1

what are the most commonly isolated species from dentoalveolar abscesses ?

-also cause ludwigs angina

Answer 1

prevotella , fusobacterium , and porphyromonas
anaerobic streptococci

facultative anaerobes : streptococcus milleri

Question 2

Periodontal abscess causing organisms :

Answer 2

Porphyromonas and Prevotella spp., Fusobacteria

haemolytic streptococci and anaerobic streptococci

Spirochaetes, Capnocytophaga spp. and Actinomyces spp.

Question 3

organisms associated with suppurative osteomyelitis of the jaws ?

Answer 3

Treponema pallidum and Mycobacterium tuberculosis.

Question 4

acute and chronic osteomylitis :

Answer 4

Tannerella, Prevotella and Porphyromonas spp., fusobacteria and anaerobic streptococci

Question 5

whats the most common causative agent of osteomyelitis in the long bones ?

Answer 5

Staphylococcus aureus

Question 6

what bacteria dominate in healthy conditions and what bacteria dominate when the patient has bad oral health?

Answer 6

good health : facultative anaerobes

bad oral health : obligate anaerobes