Dental Plaque

What is dental plaque?

• A mineralised-rich coating that forms on tooth enamel

• An Acidic solution used to clean teeth

• White spots form on the tongue and soft tissues in the oral cavity

• A thin soft deposits that adhered on the tooth or hard surfaces in the oral cavity

There are ____________ species of bacteria in the oral cavity.

• 50

• 5

• 700

• 10, 000

What bacteria are associated with dental caries?

• Staphylococcus aureus, Staphylococcus epidermidis

• Streptococcus mutans, Lactobacillus Sp

• Escherichia coli, Clostridium perfringens

• Bacillus cereus, Mycobacterium tuberculosis

Which oral bacteria are the late colonisers?

• Porphyromonas gingivalis

• Streptococcus oralis

• Treponema denticola

• Streptococcus gordoni

Supragingival plaque bacteria obtain nutrients from ...

• host diets

• GCF

• saliva

• host tissues

The dental pellicle forms only after the attachment of secondary colonizers to the dental biofilm

• TRUE

• FALSE

Dental pellicle ...

• allows the acid to penetrate the hard tissues.

• contributes to the mineralization process by serving as a site for the deposition of calcium and phosphate ions

• attracts bacteria to colonise on the tooth surface.

• only covers the enamel surface.

Primary colonisers in dental plaque consist of ....

• Aggregatibacter actinomycetemcomitans

• Streptococcus mitis

• Tannerella forsythia

• Streptococcus sanguinis

The corn-cob configuration structure is typically found in late colonizer oral bacteria within dental plaque.

• TRUE

• FALSE

Late colonizers in dental plaque begin joining the dental biofilm once the environment become depleted of oxygen.

• FALSE

• TRUE