2

Question 1

functions of secretory IgA

Answer 1

Inhibits bacterial attachment
and metabolism
Neutralizes bacterial toxins & enzymes

Question 2

A peroxidase enzyme found in saliva, tears, milk

Answer 2

lactoperoxidase

Question 3

function of lactoperoxidase

Answer 3

H2O2 mediated oxidation/denature of microbial substances

Question 4

function of lactoferrin

Answer 4

removes iron from solution –> bacteriocidal

Question 5

Salivary components that promote stability of Enamel

Answer 5

Calcium Binding Proteins

• Statherin (Phosphoprotein)
• Proline rich proteins (PRPs)

Question 6

Statherin binds calcium ion (Ca2+), prevents –

Answer 6

precipitation

Question 7

Statherin inhibits – of supersaturated calcium phosphate in oral fluid

Answer 7

spontaneous precipitation or crystallization

Question 8

function of PRPs

Answer 8

inhibit calcium phosphate crystal growth

Question 9

where is lysozyme present?

Answer 9

saliva and gingival crevicular fluid

Question 10

lysozyme has – properties

Answer 10

anti-bacterial

Question 11

lysozyme is effective against – bacteria

Answer 11

gram +

Question 12

lysozyme breaks down –

Answer 12

cell wall (protein lysis)

Question 13

lysozyme inhibits –

Answer 13

adhesion to tooth surface and glucose uptake and acid production

Question 14

what is caries?

Answer 14

chemically-controlled acid driven dissociation of the inorganic salt known as hydroxyapatite

Question 15

what causes caries?

Answer 15

presence of biofilm-associated bacteria which produce organic acids with fermentation of sugars

Question 16

Sucrose is required for the production of – which promote bacterial plaque formation and stability

Answer 16

water insoluble bacterial glucans

Question 17

What is special characteristic of the infectious agent that causes caries?

Answer 17

it’s transmissible

Question 18

Is caries genetically inherited?

Answer 18

no

Question 19

how can you reduce caries risk?

Answer 19

Reduce carbohydrate intake
Reduce the bacterial bioburden
Eliminate specific bacterial species*
Enhance salivary defense molecules