Dental Plaque 1

The dental cuticle consists of which two layers?

The outer [blank_start]cellular[blank_end] layer of the dental cuticle resembles the [blank_start]enamel organ[blank_end] The inner [blank_start]amorphous[blank_end] layer of the dental cuticle resembles the last secretion of the [blank_start]ameloblasts[blank_end]

Which of these are functions of the acquired pellicle?

The acquired pellicle forms as calcium from enamel dissolves in [blank_start]saliva[blank_end]. These are [blank_start]positively[blank_end] charged ions. Salivary [blank_start]glycoproteins[blank_end] are [blank_start]negatively[blank_end] charged and are therefore attracted to the [blank_start]positively[blank_end] charged calcium ions. This permits formation of the pellicle. This deposition of [blank_start]glycoproteins[blank_end] occurs in around 2-3 [blank_start]minutes[blank_end] after prophylaxis.

The acquired pellicle is composed of mostly...

The presence of stannous fluoride alters the pellicle amino acid composition resulting in more glycine and serine.

Some examples of oral microenvironments are: [blank_start]Buccal[blank_end] mucosa [blank_start]Dorsal[blank_end] surface of the tongue T[blank_start]ooth[blank_end] surfaces C[blank_start]revicular[blank_end] epithelium A[blank_start]ppliance[blank_end]s

The acquired pellicle penetrates a small distance into the enamel - the sub surface cuticle.

Where is the thickest pellicle found?

Where is the thinnest pellicle found?

Mycobacteria form part of the oral flora

Where is calculus most commonly found?

Dental plaque is composed of

Which bacteria is a bridging bacteria?

What are some long range pellicle interactions?

What are some short range pellicle interactions?

P gingivalis is an example of a...

Where does bacterial colonisation of the pellicle begin?

The pioneer group of dental plaque are...

As the biofilm increases in thickness, the initial colonisers are replaced with [blank_start]filament[blank_end] shaped bacteria which creates a favourable environment for gram [blank_start]negative[blank_end] and [blank_start]spiral[blank_end] shaped bacteria.

Collaboration between bacteria to break down complex substrates is an example of what?

Bacteria producing bacteriocin is an example of what interaction?

Bacteria occupying niches and prevent colonisation is an example of what interaction?

The double time of biofilm thickness decreases as time elapses

Fissure plaque is dominated by

Approximal plaque is dominated by

Many organisms are proteolytic in crevice plaque

Spirochaetes and anaerobic streptococci are almost exclusively isolated from appliance plaque

The fitting surface of appliances tends to harbour

As disease progresses toward periodontitis, what changes are seen?

Which bacteria is highly associated with caries?