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FREE AND STUDY GAMES ABOUT EFDA T#1 EXAM
QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -40 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation
Question 1: Which cement is the most acidic and irritating to the pulp?
Answer:
zinc phosphate Question 2: Which technique will help to dissipate heat when mixing zinc phosphate cement?
Answer:
mixing on a cool glass slab Question 3: Once the AutoMatrix band is positioned on the tooth, how is the band tightened?
Answer:
A wrench turns the coil clockwise to tighten the band
Question 4: How should glass ionomer cement be mixed to increase working time?
Answer:
on a glass slab
Question 5: Which type of glass ionomer cement is used for pit and fissure sealants?
Answer:
IV Question 6: To contour a metal matrix band for posterior teeth, place the band on a paper pad and rub the inner surface of the band with ____ until the ends begin to curl.
Answer:
burnisher or the end of a mirror handle
Question 7: Where is the wedge positioned when placing a posterior restoration?
Answer:
lingual
Question 8: Calcium hydroxide
Answer:
stimulates the production of reparative dentin Question 9: Which type of retraction cord is contraindicated for patients with a history of cardiovascular disease
Answer:
cord impregnated with epinephrine Question 10: The larger side of the universal matrix band loop is always directed toward which part of the tooth?
Answer:
occlusal one third Question 11: The universal, or Tofflemire, retainer holds the matrix band snugly in position. It is most often positioned in which area?
Answer:
On the buccal surface of the tooth being restored Question 12: When one or more teeth are missing from the same arch, which permanent restoration is recommended?
Answer:
fixed bridge
Question 13: Which cement that gives off an exothermic reaction and must be spatulated over a wide area on a cool, dry, thick glass slab?
Answer:
Zinc phosphate Question 14: Which type of crown does not cover the entire anatomic portion of the tooth?
Answer:
three-quarter
Question 15: What step should be followed before dispensing the cement powder?
Answer:
fluff and measure the powder Question 16: What is the component of a universal matrix retainer that serves to hold the matrix band securely in the retainer?
Answer:
outer knob
Question 17: When are temporary cements used?
Answer:
placing a provisional crown Question 18: How should polycarboxylate cement appear once setting has initiated?
Answer:
stringy or weblike Question 19: Which device is used to determine the tooth color for ceramic crowns or bridges?
Answer:
shade guide
Question 20: How is a Maryland Bridge held in place?
Answer:
Winglike extensions are bonded onto the lingual surfaces of the adjacent teeth
Question 21: A gingival retraction cord is placed ______ the crown preparation is completed; it is removed ______ the final impression is taken
Answer:
after; before
Question 22: Dental varnish is used on the cavity preparation to
Answer:
seal dentinal tubules and reduce leakage around a restoration Question 23: The _____ is used to decrease the size of the matrix band loop after the band has been placed on the tooth.
Answer:
inner knob
Question 24: Which factor influence the cementation procedure?
Answer:
humidity, temperature, mixing time Question 25: Which matrix system used for Class II posterior restorations is the most common?
Answer:
tofflemire retainer and universal band Question 26: What would occur if there were a delay between mixing a luting material and placing the indirect restoration?
Answer:
initial set begins Question 27: Properly mixed glass ionomer cement should have a ______ appearance.
Answer:
glossy Question 28: Which matrix system is used for anterior composite resin or glass ionomer restorations?
Answer:
clear plastic matrix
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