Oral Micro I

Question 1

What are some organisms that would be considered normal oral flora?

Answer 1

Bacteria
Archaea
Fungi
Mycoplasmas
Protozoa

Question 2

What are some of the non-specific defense factors in the mouth?

Answer 2

Epithelial desquamataion, Saliva flow, Mucin/agglutinins, Lysozymes, Lactoferrin, Sialoperoxidase system, histidine-rich peptides, SLPI.

Question 3

What are some of the specific defense factors in the mouth?

Answer 3

Epithelial lymphocyes and langerhans cells, Secretory IgA, IgG IgA IgM, Complement, Neutrophils/Macorphages.

Question 4

What is the general bacterial population shifts going from Health, gingivitis, periodontitis?

Answer 4

Healthy=Mostly facultative Gram possitive rods and cocci
Gingi= More Anaerobic, more gram - rods
Perio= Mostly anaerobic gram negative rods.

Question 5

what are the essential requirements for the development of dental plaque?

Answer 5

Cariogenic (acidogenic) bacteria 
Bacterial Plaque
Stagnation areas
Fermentable bacterial substrate (Sugar)
Susceptible tooth surface
Time

Question 6

What are some of the caries conductive bacteria in humans?

Answer 6

Streptococci mutans
Lactobacillus species
Actinomyces.

Question 7

What is Necrotizing Ulcerative Gingivitis caused by?

Answer 7

Prevotella intermedia, Fusobacterium, and spirochetes.

Question 8

Chronic periodonal disease is primarily caused by? More of what kind of organisms?

Answer 8

Tannerella forsythia, P. gingivalis, T. denticola, and fusobacterium. More motile rods and spirochets.