Microflora of periapical, bony and soft tissue infection (Oral Microbiology) Flashcards
1
Q
Enterococcus faecalis:
A
- Associated with endodontic failure
- Resistant to beta-lactams and aminoglycosides
- Can grow in wide range of environments
2
Q
Filifactor alocis:
A
- Present in endodontic and periodontal lesions
- Coaggregate with other bacteria to form biofilms
3
Q
Microbiology of periapical abscess:
A
- Mixed anaerobic organisms
- Usually multiple bacteria
- Bacteria:
1) S. anginosus
2) Fusobacterium
3) T. denticola
4) Filifactor alocis
4
Q
Prevotella intermedia
A
- Obligate anaerobe
- Found in periapical abscess
- Can inhibit complement system by degrading C3
5
Q
Define cellulitis and give examples of microorganisms involved
A
Spreading of infection from teeth to neighbouring soft tissue.
Commonly:
1) Anginosus group of streptococci
2) Fusobacterium spp.
6
Q
List the bacteria in periodontal disease
A
- P. gingivalis
- T. forsythia
- T. denticola
7
Q
List the bacteria in periodontal abscess - mostly anaerobes
A
- P. intermedia
- P. gingivalis
- Fusobacterium nucleatum
- Streptococcus of angiosus group
- Actinomyces spp.
- Lactobacilli spp.
8
Q
Define ‘Ludwig’s angina’
A
Infection spreads through sublingual, submandibular and lateral pharyngeal spaces
9
Q
Antibiotic resistance?
A
Metronidazole resistance is low in anaerobes
