plaque 1

Question 1

definition of plaque?

Answer 1

microbial deposit which forms on hard surfaces within the mouth and consists of microbial cells and their products

Question 2

what is pellicle?

Answer 2

forms within a few minutes of cleaning
forms a coating on all surfaces of the mouth

Question 3

where are the main areas of dental plaque

Answer 3

Mucosa of lips, cheeks and palate
Tongue
Tooth surfaces, supra and sub
Saliva
Tonsillar area
Dentures

Question 4

what happens in pellicle?

Answer 4

Micro-organisms initially attach to pellicle, not directly to enamel

Question 5

what is the formation of plaque how is it formed?

Answer 5

interacts with the pellicle
Occurs most rapidly cervically and occlusally in pits and fissures

Question 6

what is the 3 stages of biofilm formation?

Answer 6

Pellicle
Immature plaque
Mature plaque

Question 7

pioneer species in plaque?

Answer 7

Streptococci: Especially Streptococcus Salivarius

Metabolic activity of pioneer organisms alters environment

Provides suitable conditions for colonisation of other bacteria

Question 8

what is colonisation known as?

Answer 8

climax community

Question 9

Microorganisms found in the oral cavity are? (7)

Answer 9

Streptococci
Staphylococci
Neisseria
Veilonella
Actinomyces, Lactobacilli,
Fusobacteria

Question 10

Those which colonise hard tissues usually only detected in oral cavity once teeth have
erupted what are these 3 microorganisms?

Answer 10

Streptococci Sanguis
Streptococci Mutans
Actinomyces Viscosus

Question 11

what is the microorganism present in an edentulous denture wearer?

Answer 11

Candida albicans

Question 12

composition of plaque?

Answer 12

Micro-organisms 70%

Organic matrix 30%