Prevention of Dental Caries

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What is most important in reducing enamel solubility?

High content of fluoride in surface enamel
Applying fluoride only at the saliva-plaque-enamel interface
Constant supply of low levels of intra-oral fluoride (correct)
Regular use of fluoride varnish

What is the recommended fluoride concentration in toothpaste for children below 5 years?

1000 ppm
400-500 ppm (correct)
225 ppm
1500 ppm

What is the recommended amount of fluoride toothpaste for a 2-year-old child?

Half a pea-sized amount
A smear (correct)
A pea-sized amount
A full brush load

What are the four practical factors for the prevention of dental caries?

Plaque control, diet control, fluoride, and fissure sealing (C) Signup and view all the answers

What is the most common fluoride compound used in mouth rinses?

Sodium fluoride (A) Signup and view all the answers

What is the primary function of fluoride in dental caries prevention?

To replace hydroxyl ions during tooth formation (A) Signup and view all the answers

What is the critical pH for fluorapatite?

pH 3.5 (C) Signup and view all the answers

What is the contraindication for using fluoride mouth rinses?

Children below 6 years (D) Signup and view all the answers

What is the mechanism of fluoride in caries prevention?

Both pre-eruptive and post-eruptive effects (A) Signup and view all the answers

What is the benefit of fluoride varnish in preventing dental caries?

Increases formation of fluoroapetite (C) Signup and view all the answers

What is the percentage of caries reduction in primary teeth through community water fluoridation?

40-50% (A) Signup and view all the answers

What is the caries reduction achieved by using fluoride toothpaste?

25% (D) Signup and view all the answers

What is the recommended frequency of fluoride mouth rinse use?

Weekly (A) Signup and view all the answers

What is the concentration of fluoride in community water fluoridation?

0.8-1 ppm (C) Signup and view all the answers

What is the advantage of community water fluoridation?

Effective, efficient, safe, and low cost (D) Signup and view all the answers

What is the use of sodium fluoride tabs in home water fluoridation?

To supplement water with fluoride (C) Signup and view all the answers

What is the acceptable taste of APF (acidulate phosphate fluoride) according to the text?

Different flavours (B) Signup and view all the answers

What should be avoided for 4 hours after topical fluoride application?

Hot drinks and products containing alcohol (D) Signup and view all the answers

What is the probable toxic dose of fluoride that could cause serious or life-threatening systemic signs and symptoms?

5 mg F/kg wt (D) Signup and view all the answers

What is the age range when the risk of fluorosis is the highest?

0 to 6 years (C) Signup and view all the answers

What is an anatomical pit and fissure recognized as?

Susceptible areas for initiation of caries (C) Signup and view all the answers

What is the management of acute fluoride toxicity?

All of the above (D) Signup and view all the answers

What is the condition caused by excessive intake of fluoride?

Fluorosis (D) Signup and view all the answers

What is one of the treatment modalities for fluorosis?

Tooth whitening (C) Signup and view all the answers

What is the purpose of acid etching in the sealant application technique?

To facilitate the application of a low-viscosity resin (A) Signup and view all the answers

Why do primary teeth need longer acid etching time?

Because they are more resistant to etching (C) Signup and view all the answers

What is the purpose of cleaning the surface of the tooth in the sealant application technique?

To ensure adequate retention of the sealant (A) Signup and view all the answers

What is the ideal way to isolate the tooth or quadrant of teeth to be sealed?

Using rubber dam (B) Signup and view all the answers

What is the purpose of protecting the material during initial setting?

To prevent moisture from interfering with the setting process (C) Signup and view all the answers

What is the advantage of using a liquid etchant over a gel etchant?

It penetrates more deeply into the enamel (D) Signup and view all the answers

What is the purpose of using a rotating dry bristle brush in the cleaning step?

To clean the surface of the tooth (C) Signup and view all the answers

Why is glass ionomer cement not recommended for use as a sealant?

Because it has poor retention rates (B) Signup and view all the answers

What is the purpose of re-etching the enamel for 10 sec?

To remove salivary contamination (A) Signup and view all the answers

Why is it advantageous to use a bonding agent on the buccal surfaces of molars?

To increase bonding strength in uncontaminated enamel (A) Signup and view all the answers

How should the sealant be applied to the prepared surface?

In moderation, gently teasing it into the pits and grooves (D) Signup and view all the answers

Why should the unpolymerized surface layer be removed after curing?

To prevent an unpleasant taste (C) Signup and view all the answers

What is the purpose of using articulating paper during evaluation of occlusion?

To identify centric stops on the enamel (B) Signup and view all the answers

What percentage of sealants need to be repaired or replaced yearly?

5-10% (C) Signup and view all the answers

What is the primary consideration for placing sealants on teeth?

The patient's caries risk (C) Signup and view all the answers

What should be done if a sealant is partially or completely lost?

Remove the old sealant and re-evaluate the tooth (C) Signup and view all the answers