Quiz on Caries Prevention with Fluoride

Which bacteria are primarily responsible for dental caries?

• Streptococcus mutans and Streptococcus sobrinus

• Escherichia coli

• Streptococcus pneumoniae

• Lactobacillus rhamnosus

What is one of the mechanisms by which fluoride prevents dental caries?

• Increases the solubility of hydroxyapatite

• Inhibits the growth of all bacteria

• Reduces demineralization of enamel

• Eliminates the need for dental hygiene

Which of the following is a systemic fluoride delivery method?

• Fluoride gel

• Fluoridated water

• Fluoride mouthwash

• Fluoride varnish

What is the primary effect of fluoride on hydroxyapatite?

• It makes it more soluble

• It fills the gaps and stabilizes it

• It has no effect

• It completely replaces it

What is a potential side effect of excessive fluoride intake?

• Increased dental caries

• Dental fluorosis

• Improved enamel strength

• Decreased saliva production

What is the lethal dose of fluoride for humans?

• 32-64 mg/kg

• 10-20 mg/kg

• 1-2 mg/kg

• 8-16 mg/kg

What is the main purpose of fluoride varnish application?

• To whiten teeth

• To extend fluoride contact duration

• To replace dental fillings

• To prevent gum disease

Which of the following is NOT a type of topical fluoride?

• NaF varnish

• APF gel

• Silver Diamine Fluoride

• Fluoridated milk

What is the recommended fluoride level in toothpaste for adults?

• 250 ppm

• 500 ppm

• 1400-1500 ppm

• 2000 ppm

What is the effect of fluoride on cariogenic bacteria?

• It kills all bacteria

• It has no effect

• It inhibits their metabolic enzymes

• It enhances their growth