Crack NBoard Preventive Agents

In determining the percentage of fluoride ion in a product it must be multiplied by the molecular weight conversion ratio.An 8% stannous fluoride (SnF) product would have 2% fluoride ion.

• A) Both statements are true

• B) Both statements are false

• C) First statement is true, the second is false

• D) First statement is false, the second is true

What is Duraphat®/Duraflor®?

• A) It is a high-concentration, prescription-only, fluoride dentifrice. The patient is instructed to brush twice a day with nothing to eat or drink for at least 30 minutes afterwards.

• B) It is a take-home .fluoride gel. It is placed in a custom made fluoride tray and the patient is instructed wear the tray for 5 minutes per day with nothing to eat or drink for at least 30 minutes afterwards.

• C) It is a saliva-stimulator, effective in the treatment of drug or radiation-induced xerostomia.

• D) It is a fluoride varnish that is applied topically, in-office. It is used in the treatment of high caries risk patients and in the remineralization of incipient carious lesions.

• E) It is an antibacterial mouth rinse primarily used during healing following periodontal surgery.

All of the following are recommendations to decrease the risk of fluorosis EXCEPT one. Which one is the EXCEPTION?

• A) Use a pediatric brush for children

• B) Use a pea-sized bead of toothpaste

• C) Keep toothpaste and other fluoridated products out of children’s reach

• D) Do not use fluoridated toothpaste until age 2.

• E) Supervise brushing at least until age 4

Studies have shown that combining chlorhexidine and fluoride rinses together is very effective in reduction of white-spot lesions in enamel.The use of the two together has also shown a significant decrease in enamel mineral loss after orthodontic banding.

• A) Both statements are true

• B) Both statements are false

• C) First statement is true, the second is false

• D) First statement is false, the second is true

A 12 year old patient lives in a community where the water supply has been evaluated to be 0.45ppm. The daily dosage of recommended supplemental fluoride is:

• A) 1.00 mg

• B) 0.75 mg

• C) 0.50mg

• D) 0.25 mg

• E) No fluoride supplement required

Your patient is a 2 year-old girl who is brought in for her initial examination. Her father asks you if fluoride is recommended for his daughter since she has never had any cavities. The patient’s family gets their water from a well on their farm, which was tested and found to have 0.2 ppm fluoride content. The well water is their only source of fluids and irrigation for their farm. They grow and eat all of their own produce. Your examination finds her to indeed be caries free. Your recommendation to her father is?

• •A) No, fluoride is not indicated

• •B) Yes, 1.00 mg/day

• C) Yes, 0.75 mg/day

• •D) Yes, 0.50 mg/day

• •E) Yes, 0.25 mg/day

Which of the following mouth rinses exhibit clinically significant substantivity?

• A) Listerine®

• B) Plax®

• C) Peridex®

• D) Scope®

• E) Crest Pro-Health™

A sealant is indicated in patients in all of the following EXCEPT one. Which one is the EXCEPTION?

• A) Deep retentive pits and fissures

• B) Stained pits and fissures with minimal decalcification

• C) Radiographic/clinical evidence of interproximal caries

• D) Adequate isolation from salivary contamination

• E) Retention is similar to permanent teeth

A preventive resin restoration (PRR) is indicated over a sealant when?

• A) Moderate radiographic evidence of caries exists

• B) A pulp exposure is near

• C) Cusps are undermined from caries

• D) Minimal pit and fissure decay confined to enamel

• E) None of the above

During tooth formation, ingested fluorides become incorporated into tooth structures, because fluorides ingested regularly during the time when teeth are developing are deposited throughout the entire tooth surface and provide longer-lasting protection than those applied topically.

• A) Both the statement and the reason are correct and related.

• B) Both the statement and the reason are correct but NOT related.

• C) The statement is correct, but the reason is NOT.

• D) The statement is NOT correct, but the reason is correct.

• E) NEITHER the statement NOR the reason is correct