40 Questions
What is most important in reducing enamel solubility?
Constant supply of low levels of intra-oral fluoride
What is the recommended fluoride concentration in toothpaste for children below 5 years?
400-500 ppm
What is the recommended amount of fluoride toothpaste for a 2-year-old child?
A smear
What are the four practical factors for the prevention of dental caries?
Plaque control, diet control, fluoride, and fissure sealing
What is the most common fluoride compound used in mouth rinses?
Sodium fluoride
What is the primary function of fluoride in dental caries prevention?
To replace hydroxyl ions during tooth formation
What is the critical pH for fluorapatite?
pH 3.5
What is the contraindication for using fluoride mouth rinses?
Children below 6 years
What is the mechanism of fluoride in caries prevention?
Both pre-eruptive and post-eruptive effects
What is the benefit of fluoride varnish in preventing dental caries?
Increases formation of fluoroapetite
What is the percentage of caries reduction in primary teeth through community water fluoridation?
40-50%
What is the caries reduction achieved by using fluoride toothpaste?
25%
What is the recommended frequency of fluoride mouth rinse use?
Weekly
What is the concentration of fluoride in community water fluoridation?
0.8-1 ppm
What is the advantage of community water fluoridation?
Effective, efficient, safe, and low cost
What is the use of sodium fluoride tabs in home water fluoridation?
To supplement water with fluoride
What is the acceptable taste of APF (acidulate phosphate fluoride) according to the text?
Different flavours
What should be avoided for 4 hours after topical fluoride application?
Hot drinks and products containing alcohol
What is the probable toxic dose of fluoride that could cause serious or life-threatening systemic signs and symptoms?
5 mg F/kg wt
What is the age range when the risk of fluorosis is the highest?
0 to 6 years
What is an anatomical pit and fissure recognized as?
Susceptible areas for initiation of caries
What is the management of acute fluoride toxicity?
All of the above
What is the condition caused by excessive intake of fluoride?
Fluorosis
What is one of the treatment modalities for fluorosis?
Tooth whitening
What is the purpose of acid etching in the sealant application technique?
To facilitate the application of a low-viscosity resin
Why do primary teeth need longer acid etching time?
Because they are more resistant to etching
What is the purpose of cleaning the surface of the tooth in the sealant application technique?
To ensure adequate retention of the sealant
What is the ideal way to isolate the tooth or quadrant of teeth to be sealed?
Using rubber dam
What is the purpose of protecting the material during initial setting?
To prevent moisture from interfering with the setting process
What is the advantage of using a liquid etchant over a gel etchant?
It penetrates more deeply into the enamel
What is the purpose of using a rotating dry bristle brush in the cleaning step?
To clean the surface of the tooth
Why is glass ionomer cement not recommended for use as a sealant?
Because it has poor retention rates
What is the purpose of re-etching the enamel for 10 sec?
To remove salivary contamination
Why is it advantageous to use a bonding agent on the buccal surfaces of molars?
To increase bonding strength in uncontaminated enamel
How should the sealant be applied to the prepared surface?
In moderation, gently teasing it into the pits and grooves
Why should the unpolymerized surface layer be removed after curing?
To prevent an unpleasant taste
What is the purpose of using articulating paper during evaluation of occlusion?
To identify centric stops on the enamel
What percentage of sealants need to be repaired or replaced yearly?
5-10%
What is the primary consideration for placing sealants on teeth?
The patient's caries risk
What should be done if a sealant is partially or completely lost?
Remove the old sealant and re-evaluate the tooth
Learn about the four practical factors in preventing dental caries, including plaque control, diet control, fluoride, and fissure sealing. This quiz covers the importance of fluoride in preventing tooth decay.
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