EFDA BOARD EXAM NEWEST ACTUAL
EXAM QUESTIONS AND DETAILED
CORRECT ANSWERS | 100% CORRECT
ANSWERS A+ GRADE STUDYGUIDE 2025
What does the term synersis mean as it relates to alginate
impressions? Correct Answer the evaporation of water
from alginate
What is not an instrument used for finishing and polishing
amalgam restorations: brownie points, green stone,
carver, prophy cup Correct Answer carver
When would a light gauge, vacuum-formed resin material
be used? Correct Answer bleach tray or provisional
coverage
what type of stain, found on some children's teeth, can be
caused by poor hygiene and the fungi are retained in
bacterial plaque? Correct Answer green stain
what is the Theory of Selective polishing? Correct Answer
only polish the teeth that have staining or need it, not all of
the teeth
what is not something you evaluate before polishing an
amalgam? Fractures, overhangs, restoration age, decay
Correct Answer restoration age
,what the solution for topical anesthetic is compared to that
of a local anesthetic, the concentration in a topical solution
is Correct Answer greater than local
Which type of impression material should be used to
acquire an impression with low tear resistance and high
dimensional stability on tooth #18? hydrocolloid, polyether,
polysiloxane, polysulfide Correct Answer polysiloxane
topical anesthetic comes in which forms? Correct Answer
liquid, gel, spray, and patch
a cingulum pit cavity preparation on tooth #10 is
considered which classification? Correct Answer class I
the permanent tooth that has an H-shaped groove pattern
on its occlusal surface is the Correct Answer mandibular
second molar
why is a sedative base placed in a tooth prior to placing a
restoration Correct Answer soothes an irritated or
damages pulp
when the pulp is stimulated by vibrations from a
handpiece, this is referred to as what type of stimulus?
Correct Answer mechanical
which of the following is a source of gingival and
periodontal infections? oral mucosa, tooth decay, calculus,
planktonics Correct Answer calculus
, decay that is found on proximal surfaces of anterior teeth
is classified in black's classification as Correct Answer
class III
what is another name for polysulfide material? Correct
Answer rubber base
in order to minimize the loss of water evaporation when
mixing a cement, it is recommended to Correct Answer
dispense the powder first
What are two parts of a model? Correct Answer anatomic
and art
what is one reason a provisional restoration is applied?
Correct Answer prevent the prepared tooth from drifting
what making a bleach tray with a vacuum former, how far
should the material sag before it is lowered down over the
model? Correct Answer 1/2 inch
the tip of the explorer is used at the gingival edge of a
restoration with over-lapping strokes to do what? Correct
Answer remove excess cement
what is the mixing motion for Zinc phosphate cement
Correct Answer broad figure eight movements on a cool,
dry glass slab (mixing time 1-2 minutes)
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