NDEB Dental Public Health and Preventive Dentistry

Question 1

What is the optimal fluoride concentration in community water fluoridation recommended by the US Public Health Service?

Accepted Answer

0.7 mg/L

Answer

0.3 mg/L

Answer

1.0 mg/L

Answer

1.2 mg/L

Question 2

Which index measures the prevalence and severity of dental fluorosis in a population?

Accepted Answer

Dean's Fluorosis Index

Answer

DMFT index

Answer

OHI-S

Answer

CPITN

Question 3

Which type of prevention focuses on restoring teeth already damaged by disease?

Accepted Answer

Tertiary prevention

Answer

Primary prevention

Answer

Secondary prevention

Answer

Primordial prevention

Question 4

What does the DMFT index measure?

Accepted Answer

Decayed, Missing, and Filled permanent Teeth

Answer

Depth of periodontal pockets

Answer

Dental mobility, furcation, and tissue loss

Answer

Degree of malocclusion, facial type, and tissue health

Question 5

Which bacteria is most associated with the initiation of dental caries?

Accepted Answer

Streptococcus mutans

Answer

Porphyromonas gingivalis

Answer

Actinobacillus actinomycetemcomitans

Answer

Treponema denticola

Question 6

Which preventive agent is applied professionally as a high-concentration varnish or gel to reduce caries risk?

Accepted Answer

Fluoride varnish (22,600 ppm)

Answer

Chlorhexidine 0.12%

Answer

Povidone-iodine 10%

Answer

Silver diamine fluoride 3%