EFDA Practice Exam (Restorative Functions) 126 Questions and Answers Latest.

EFDA Practice Exam (Restorative Functions) / a= a= a= a= a=




126 Questions and Answers Latest
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What is used to stabilize a Tofflemire matrix band at the gingival margin of a tooth?
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-Floss

-Wooden wedge a=




-Retraction cord a=




-Metal clamp a=




Wooden wedge a=




Which of the following are involved in a Class II cavity restoration?
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-Anterior mesial and interproximal surfaces a= a= a= a=




-Posterior mesial and occlusal surfaces a= a= a= a=




-Anterior distal and occlusal surface a= a= a= a=




-Posterior one surface with pits and fissures a= a= a= a= a= a=




Posterior mesial and occlusal surfaces a= a= a= a=




What are the four components of a composite resin?
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-Glass ionomer, alloy powder, silica, organosilane compound
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-Organic resin matrix, inorganic fillers, coupling agent, pigments
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-Bis-GMA, tin, copper, polishable fillers a= a= a= a=




-Resin matrix, eugenol, quartz fillers, inorganic coloring
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Organic resin matrix, inorganic fillers, coupling agent, pigments
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One of the main DISADVANTAGES of using an illuminated dental isolation system is
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-a prolonged procedure time.
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-the cost of mouthpieces.
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,-adherence to mucosa. a= a=




-its limited use in procedures.
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the cost of mouthpieces.
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After placement of an amalgam restoration, advise the patient to
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-not chew or bite on the restoration for at least 72 hours.
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-not chew or bite on the restoration for 24 hours.
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-use a mouth rinse twice daily for one week.
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-rinse with fluoride when he or she returns home.
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not chew or bite on the restoration for 24 hours.
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Which of the following procedures does NOT require the use of a fulcrum?
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-Coronal polishing a=




-Suctioning

-Placing a dental liner a= a= a=




-Removing dental cement a= a=




Suctioning




What is an example of a Class VI cavity?
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-Incisal angle a=




-Lingual pit a=




-Proximal surface a=




-Wear facet a=




Wear facet a=




A cavity preparation involving the incisal angle is classified as
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-Class IV. a=

,-Class V. a=




-Class III. a=




-Class VI. a=




Class IV a=




What should the operator do after adjusting the occlusal-gingival height of a stainless steel crown?
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-Smooth the rough edges of the crown.a= a= a= a= a= a=




-Adjust the occlusal circumference of the crown.
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-Line the crown with a thin layer of composite resin.
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-Polish the occlusal surface of the crown with pumice.
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Smooth the rough edges of the crown.
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The mechanical means of mixing dental alloy and mercury is known as
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-bonding.

-amalgamation.

-coupling.

-trituration.

trituration.




How long is a mechanical retraction cord left in place?
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-1-5 minutes
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-16-20 minutes a=




-10-15 minutes a=




-6-9 minutes
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10-15 minutes a=

, An advantage to using stainless steel crowns compared to other preformed crowns is that stainless ste
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el crowns
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-have more natural-looking color.
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-are more durable.
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-have better wear ability.a= a= a=




-are softer. a=




are more durable.
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During the amalgam polishing procedure, which technique will minimize the production of heat and m
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ercury vapors? a=




-Slow to moderate handpiece speed
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-Application of medium to course abrasives a= a= a= a= a=




-Continuous contact with restoration a= a= a=




-Maintaining a dry field of operation a= a= a= a= a=




Slow to moderate handpiece speed
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What restorative material is used for emergencies, patient illness or economic reasons?
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-Direct restorative a=




-Indirect restorative a=




-Provisional restorative a=




-Intermediate restorative a=




Intermediate restorative a=




Why is a dental dam a method for infection control?
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-Prevents spatter a=




-Prevents patients from coughing a= a= a=




-Reduces salivary aerosols a= a=




-Protects the patient's face a= a= a=




Reduces salivary aerosols a= a=