Dental Caries

Question 1

What are foci of miller?

Answer 1

Liquefaction of dentinal tubules

Question 2

In which enamel zone are Striae of Retzius most prominent when caries are present?

Answer 2

Body of Lesion

Question 3

How long does it take before radiated patients start developing caries due to xerostomia?

Answer 3

As early as 3 months

Question 4

Which serotype of mutans is responsible for caries?

Answer 4

E

Question 5

4 criteria for MIH

Answer 5

1. Demarcated opacities
2. Post-eruptive enamel breakdown
3. Atypical restoration
4. Extracted molar due to demarcated lesions

Question 6

What is the zone of bacterial invasion of tubules incapable of remineralization called?

Answer 6

Turbid Zone

Question 7

Enzymes resposible for synthesis of extracellular glucans and fructans

Answer 7

Glucosyl transferase and fructosyl transferase

Question 8

Caries associated with pre-eruptive enamel hypoplasia are called..

Answer 8

Occult caries

Question 9

Which structure facilitates attachment of actinomyces to tooth surface?

Answer 9

Fimbriae

Question 10

What is linear enamel caries?

Answer 10

Caries on anterior maxillary teeth in neonatal line due to metabolic disturbances or trauma at birth