1 | Page
EFDA Board Exam Questions and Correct
Answers
What agent is used in topical anesthetic? Ans: Benzocaine
How long should topical anesthetic be placed for more profound
soft tissue analgesia? Ans: 60 to 90 seconds
Dry angles are an effective way to control saliva secretions from
Ans: stensen's duct
what type of ZOE lacks strength and long-term durability? Ans:
type I (temporary cement)
This type of cement is a hybrid of silicate and polycarboxilate
cement Ans: glass ionomer
what material is supplied as a paste/paste system and also in
cartridges? Ans: polyether
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, 2 | Page
What does the term elastomeric mean? Ans: having elastic or
rubber-like qualities
an alginate absorbing excess water is termed what? Ans:
imbibition
what is a final impression used for? Ans: an accurate
reproduction of teeth and surrounding tissue
what is the negative reproduction of dental arches and
surrounding tissues? Ans: impression
at what point in a procedure is a mylar matrix placed? Ans:
before etching
the retainer (toffelmire) is positioned from what surface? Ans:
buccal
Where is the wedge inserted to position the matrix band firmly
against the gingival margin? Ans: lingual embrasure
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, 3 | Page
what instruments are used to contour a matrix band? Ans:
burnisher or mirror handle
a matrix band is made of what? Ans: thin flexible steel
what stabilizes the tofflemire matrix band? Ans: wooden wedge
what type of stain can chlorhexidine cause? Ans: extrinsic
most common type of temporary coverage for crown and bridge?
Ans: custom provisional
why only intermittent pressure of a tooth when polishing? Ans:
heat dissipates between strokes
Course, extra course, medium, fine and extrafine are different
_____ of polishing paste? Ans: grit
removal of calculus, debris, stain, and plaque from teeth Ans:
oral prophylaxis
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, 4 | Page
where on the tooth do you begin to use prophy cup? Ans:
gingival third
what is the different between catalyst and a base? Ans: Base-
basic ingredient of material
catalyst- increases the rate of chemical reaction (makes it set)
Would you use a polymer crown on an anterior tooth? why? Ans:
yes, because its tooth colored
What is a class I cavity Ans: decay in pits and fissures of occlusal
surface
What is a class II cavity Ans: decay on proximal (mesial or distal)
surfaces of premolars and molars
What is a class III cavity? Ans: decay in proximal surfaces (Mesial
or distal) of incisors and canines
© 2025 All rights reserved
EFDA Board Exam Questions and Correct
Answers
What agent is used in topical anesthetic? Ans: Benzocaine
How long should topical anesthetic be placed for more profound
soft tissue analgesia? Ans: 60 to 90 seconds
Dry angles are an effective way to control saliva secretions from
Ans: stensen's duct
what type of ZOE lacks strength and long-term durability? Ans:
type I (temporary cement)
This type of cement is a hybrid of silicate and polycarboxilate
cement Ans: glass ionomer
what material is supplied as a paste/paste system and also in
cartridges? Ans: polyether
© 2025 All rights reserved
, 2 | Page
What does the term elastomeric mean? Ans: having elastic or
rubber-like qualities
an alginate absorbing excess water is termed what? Ans:
imbibition
what is a final impression used for? Ans: an accurate
reproduction of teeth and surrounding tissue
what is the negative reproduction of dental arches and
surrounding tissues? Ans: impression
at what point in a procedure is a mylar matrix placed? Ans:
before etching
the retainer (toffelmire) is positioned from what surface? Ans:
buccal
Where is the wedge inserted to position the matrix band firmly
against the gingival margin? Ans: lingual embrasure
© 2025 All rights reserved
, 3 | Page
what instruments are used to contour a matrix band? Ans:
burnisher or mirror handle
a matrix band is made of what? Ans: thin flexible steel
what stabilizes the tofflemire matrix band? Ans: wooden wedge
what type of stain can chlorhexidine cause? Ans: extrinsic
most common type of temporary coverage for crown and bridge?
Ans: custom provisional
why only intermittent pressure of a tooth when polishing? Ans:
heat dissipates between strokes
Course, extra course, medium, fine and extrafine are different
_____ of polishing paste? Ans: grit
removal of calculus, debris, stain, and plaque from teeth Ans:
oral prophylaxis
© 2025 All rights reserved
, 4 | Page
where on the tooth do you begin to use prophy cup? Ans:
gingival third
what is the different between catalyst and a base? Ans: Base-
basic ingredient of material
catalyst- increases the rate of chemical reaction (makes it set)
Would you use a polymer crown on an anterior tooth? why? Ans:
yes, because its tooth colored
What is a class I cavity Ans: decay in pits and fissures of occlusal
surface
What is a class II cavity Ans: decay on proximal (mesial or distal)
surfaces of premolars and molars
What is a class III cavity? Ans: decay in proximal surfaces (Mesial
or distal) of incisors and canines
© 2025 All rights reserved
