EFDA BOARD EXAM 2025 LATEST WITH 300 REAL
EXAM QUESTIONS AND CORRECT ANSWERS (100%
CORRECT VERIFIED ANSWERS) EFDA EXAM
2025/2026 NEWEST TEST BANK (BRAND NEW!)
What agent is used in topical anesthetic? - CORRECT ANSWER-Benzocaine
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)
when selecting pastes for the coronal polishing procedures, what is most important to consider? -
CORRECT ANSWER-grit
what ingredient is released from glass ionomer to inhibit recurrent decay? - CORRECT ANSWER-
flouride
topical ointments are more effective when - CORRECT ANSWER-the site is dried with gauze prior to
application
What is the basic set up for cement removal? - CORRECT ANSWER-mirror, explorer, spoon excavator,
dental floss and 2x2 gauze
what cement is the most versatile and can be used as a base? - CORRECT ANSWER-Zinc-oxide
eugenol cement (ZOE)
name three cementing errors - CORRECT ANSWER-improper mixing technique humidity, incorrect
temperature
what is the best temperature for the water mixing alginate? - CORRECT ANSWER-room temperature
-70 degrees
who takes the final impression? - CORRECT ANSWER-dentist
the flat side of the wedge is placed next to what? - CORRECT ANSWER-cervical margin
dry-angle isolation is recommended for what area of the mouth? - CORRECT ANSWER-mandibular
posterior buccal quadrant
what type of isolation technique provides a decreased amount of contaminated aerosol exposure to
the operator? - CORRECT ANSWER-saliva ejector or HVE
EXAM QUESTIONS AND CORRECT ANSWERS (100%
CORRECT VERIFIED ANSWERS) EFDA EXAM
2025/2026 NEWEST TEST BANK (BRAND NEW!)
What agent is used in topical anesthetic? - CORRECT ANSWER-Benzocaine
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)
when selecting pastes for the coronal polishing procedures, what is most important to consider? -
CORRECT ANSWER-grit
what ingredient is released from glass ionomer to inhibit recurrent decay? - CORRECT ANSWER-
flouride
topical ointments are more effective when - CORRECT ANSWER-the site is dried with gauze prior to
application
What is the basic set up for cement removal? - CORRECT ANSWER-mirror, explorer, spoon excavator,
dental floss and 2x2 gauze
what cement is the most versatile and can be used as a base? - CORRECT ANSWER-Zinc-oxide
eugenol cement (ZOE)
name three cementing errors - CORRECT ANSWER-improper mixing technique humidity, incorrect
temperature
what is the best temperature for the water mixing alginate? - CORRECT ANSWER-room temperature
-70 degrees
who takes the final impression? - CORRECT ANSWER-dentist
the flat side of the wedge is placed next to what? - CORRECT ANSWER-cervical margin
dry-angle isolation is recommended for what area of the mouth? - CORRECT ANSWER-mandibular
posterior buccal quadrant
what type of isolation technique provides a decreased amount of contaminated aerosol exposure to
the operator? - CORRECT ANSWER-saliva ejector or HVE
