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The spacific group(s) of bacteria responsible for dental caries is/are?
(D) b and c
Mutans Streptococci and Lactobacilli
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The presence of lactobacilli (LB) in a patient's mouth indicates that the paient.
(B) Has a high sugar intake.
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The caries process requires a susceptible tooth, a diet rich in _____, and _____.
(A) Fermentable carbohydrates; Spacific bacteria
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Dissolution of calcium andphosphate from hydroxyapatite crystals is called_____
(B) Demineralization
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The carious lesions found frequently in elderly patients are?
(C) Root caries
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The ____ protection of saliva is dependent on substances within the saliva, such as immunoglobulin.
(C) Antibacterial
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A laser caries detector_____.
(C) Cannot be used to diagnose interproximal caries.
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The caries process can be slow or prevented by?
(C) Using Fluoride
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Carier risk accessment test include measuring the____.
(B) Saliva flow test and bacterial testing
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Rampan caries can be caused by_____
(D) A and C
Xerostomia and eating frequent and /or excessive amount sugar
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It is anticipated that future advances in _____ will provide dental professionals with a rapid method of assessing a patient's risk for dental caries before the patient leaves the dental chair.
(C) Molecular Biology
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Nearly _____% of all cavities occur in the pits and fissures of the posterior teeth.
(D) 84
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Sealants are indicated for____
(D) Some maxillary central and latoral incisors.
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Contraindications to sealant placement include proximal decay, because____
(B) Posterior proximal tooth preparation will usually include the occlusal pits and fissures.
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Light-cured sealant materials____
(D) Are polymerized by photo iniciators in the resin.
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The most common cause of sealant loss is _____
(C) Moisture contamination during placement
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The first step in placing dontal sealants is to_____ the surface.
(C) Clean
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A sealant that polymerized by chemical reactions is called ___?
(C) Self-cured
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Self-cured sealant materials are supplied as a two-part system that includes ____
(D) both A and b
A base and A catalyst
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The retention of the sealant is obtained by etching the enamel with ___, to roughen it and open the pores in enamel for penetration of the resin sealant.
(B) Phosphoric Acid
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Enamel that has been etched has the appearance of being ___.
(B) Frosty
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Sealant material should not be stored in proximity to ___ containing products.
(B) Eugenol
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The primary reason why very few children are protected by dental sealants is _____.
(C) Lack of public awareness
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Clinical researchers have shown that sealing the margins of amalgam and composite restorations with unfilled resins will do which of the following: 1)promote microleakage, 2) arrest the progression of caries, 3) preserve exixting restoration, and 4) preserve tooth structure.
(B) 2,3,4
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If you use an air polishing device that used sodium bicarbonated for cleaning enemal prior to sealant placement, the etching step should be repeated for a second time, or ________ should be applied to the surface for 10 seconds to neutralize the sodium bicarbonate and throughly rinsed off with water prior to apply the etch.
(C) 3% hydrogen peroxide
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