Dental Caries

Question 1

What component of dentine gives it elastic properties?

Answer 1

Collagen

Question 2

If you see blunted pulp horns on a radiograph, what is most likely the cause?

Answer 2

This is tertiary dentine reacting to insult (indicative of caries process)

Question 3

What are the two most prevalent bacterial species in the oral cavity?

Answer 3

Strep.Mutans and lactobacilli

Question 4

Name this hypothesis.

“Radiogenic bacteria are ubiquitous in plaque, but usually in concentrations too low to cause probelms unless there is a shift in the balance driven by local environmental change.”

Answer 4

Marsh’s ecological plaque hypothesis

Question 5

What is the success rate for SS hall crown placement at 2 years?

Answer 5

98%

Question 6

What is the success rate for SS hall crown placement at 5 years?

Answer 6

92%

Question 7

What is the success rate for composite placement at 2 years?

Answer 7

71%

Question 8

What is the success rate for composite placement at 5 years?

Answer 8

<50%

Question 9

How should enamel appear with all its mineral?

Answer 9

Transparent

Question 10

How would demineralised enamel appear? And why?

Answer 10

Opaque/white
Because the light is reflected back by disorganised crystals

Question 11

What are three easy to use, evidence based factors which clearly predict future caries development, and which all clinicians should used in their caries risk assessment?

Answer 11

1. Family history/previous disease
2. SES
3. Intiution

Question 12

What does DMFT stand for?

Answer 12

Decayed missing filled teeth