EFDA COMPREHENSIVE EXAM QUESTIONS
AND CORRECT ANSWERS STUDY GUIDE
●● Exogenous stains are caused by environmental sources and are
classified into subdivisions, including which of the following?
a. Intrinsic stains
b. Endogenous stains.
c. Extrinsic stains.
d. Both a and c.
Answer: A and C
●● Which of the following choices represents an endogenous stain?
a. An excessive amount of fluoride during the development of the tooth.
b. blueberries
c. dental amalgam that has been incorporated into tooth structure.
d. coffee
Answer: coffee
●● Air-powered polishing is used to remove:
Answer:
●● Disclosing agent can be used for:
,Answer: Revealing Home care.
●● The air-polishing technique uses a specially designed handpiece,
with a nozzle that delivers a high-pressure stream of warm water and:
Answer: Air.
●● Polishing cups:
a. remove stain from the clinical crowns of teeth.
b. are made from gutta-percha.
c. should be rotated rapidly to remove stains from teeth.
d. are available in a synthetic material for patients with latex allergies.
Answer: remove stain from the clinical crowns of teeth.
●● When using a bristle brush, the brush should be:
a. rotating rapidly before touching the tooth surface.
b. applied lightly to the tooth surface while revolving at the lowest
speed.
c. placed on the tooth while not rotating, and then rotating slowly.
d. placed on the tooth while not rotating, and then rotated in a reversed
direction.
Answer: Rotating rapidly be for touching the surface of the tooth.
, ●● Recommended polishing pastes have _____ polish and ____
abrasion levels.
a. high; high
b. high; low
c. low; high
d. low; low
Answer: High, Low
●● Luting Cement
Answer: Adhesive
●● Cementing provisionals
Answer: Temporary cements
●● Zinc phosphate
Answer: Gives off exothermic reaction. Mix on glass slab
●● Loading provisionals and cast restorations with cement
Answer: Lightly lined to cover walls (both)
●● Polycarboxylate cement uses and appearence.
Answer: Looks glassy. Stringy/weblike
AND CORRECT ANSWERS STUDY GUIDE
●● Exogenous stains are caused by environmental sources and are
classified into subdivisions, including which of the following?
a. Intrinsic stains
b. Endogenous stains.
c. Extrinsic stains.
d. Both a and c.
Answer: A and C
●● Which of the following choices represents an endogenous stain?
a. An excessive amount of fluoride during the development of the tooth.
b. blueberries
c. dental amalgam that has been incorporated into tooth structure.
d. coffee
Answer: coffee
●● Air-powered polishing is used to remove:
Answer:
●● Disclosing agent can be used for:
,Answer: Revealing Home care.
●● The air-polishing technique uses a specially designed handpiece,
with a nozzle that delivers a high-pressure stream of warm water and:
Answer: Air.
●● Polishing cups:
a. remove stain from the clinical crowns of teeth.
b. are made from gutta-percha.
c. should be rotated rapidly to remove stains from teeth.
d. are available in a synthetic material for patients with latex allergies.
Answer: remove stain from the clinical crowns of teeth.
●● When using a bristle brush, the brush should be:
a. rotating rapidly before touching the tooth surface.
b. applied lightly to the tooth surface while revolving at the lowest
speed.
c. placed on the tooth while not rotating, and then rotating slowly.
d. placed on the tooth while not rotating, and then rotated in a reversed
direction.
Answer: Rotating rapidly be for touching the surface of the tooth.
, ●● Recommended polishing pastes have _____ polish and ____
abrasion levels.
a. high; high
b. high; low
c. low; high
d. low; low
Answer: High, Low
●● Luting Cement
Answer: Adhesive
●● Cementing provisionals
Answer: Temporary cements
●● Zinc phosphate
Answer: Gives off exothermic reaction. Mix on glass slab
●● Loading provisionals and cast restorations with cement
Answer: Lightly lined to cover walls (both)
●● Polycarboxylate cement uses and appearence.
Answer: Looks glassy. Stringy/weblike
