EFDA ENTRANCE EXAM LATEST REAL EXAM 100
QUESTIONS AND CORRECT ANSWERS (DETAILED
ANSWERS)
What agent is used in topical anesthetic? - ANSWER: Benzocaine
How long should topical anesthetic be placed for more profound soft tissue
analgesia? - ANSWER: 60 to 90 seconds
Dry angles are an effective way to control saliva secretions from - ANSWER: stensen's
duct
what type of ZOE lacks strength and long-term durability? - ANSWER: type I
(temporary cement)
This type of cement is a hybrid of silicate and polycarboxilate cement - ANSWER:
glass ionomer
what material is supplied as a paste/paste system and also in cartridges? - ANSWER:
polyether
What does the term elastomeric mean? - ANSWER: having elastic or rubber-like
qualities
an alginate absorbing excess water is termed what? - ANSWER: imbibition
what is a final impression used for? - ANSWER: an accurate reproduction of teeth
and surrounding tissue
what is the negative reproduction of dental arches and surrounding tissues? -
ANSWER: impression
at what point in a procedure is a mylar matrix placed? - ANSWER: before etching
the retainer (toffelmire) is positioned from what surface? - ANSWER: buccal
Where is the wedge inserted to position the matrix band firmly against the gingival
margin? - ANSWER: lingual embrasure
what instruments are used to contour a matrix band? - ANSWER: burnisher or mirror
handle
a matrix band is made of what? - ANSWER: thin flexible steel
what stabilizes the tofflemire matrix band? - ANSWER: wooden wedge
, what type of stain can chlorhexidine cause? - ANSWER: extrinsic
most common type of temporary coverage for crown and bridge? - ANSWER: custom
provisional
why only intermittent pressure of a tooth when polishing? - ANSWER: heat dissipates
between strokes
Course, extra course, medium, fine and extrafine are different _____ of polishing
paste? - ANSWER: grit
removal of calculus, debris, stain, and plaque from teeth - ANSWER: oral prophylaxis
where on the tooth do you begin to use prophy cup? - ANSWER: gingival third
what is the different between catalyst and a base? - ANSWER: 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? - ANSWER: yes, because
its tooth colored
What is a class I cavity - ANSWER: decay in pits and fissures of occlusal surface
What is a class II cavity - ANSWER: decay on proximal (mesial or distal) surfaces of
premolars and molars
What is a class III cavity? - ANSWER: decay in proximal surfaces (Mesial or distal) of
incisors and canines
What is a class IV cavity? - ANSWER: decay in proximal surfaces (mesial or distal) of
incisors and canines and involves the incisal edge or angle of tooth
What is a class V cavity? - ANSWER: decay on the gingival third of facial or lingual
surface of any tooth
what is a class VI cavity? - ANSWER: decay on incisal edges of anterior teeth and the
cusp tips of posterior teeth caused by abrasion, wear, or defects
Stensen's duct - ANSWER: back cheek by first molar
pterygomandibular raphe - ANSWER: Fold of tissue that extends from the junction of
the hard and soft palates down to the mandible
gingival embrasure - ANSWER: triangular space of gums between the teeth
incisal embrasure - ANSWER: triangular space between incisal edge of teeth
QUESTIONS AND CORRECT ANSWERS (DETAILED
ANSWERS)
What agent is used in topical anesthetic? - ANSWER: Benzocaine
How long should topical anesthetic be placed for more profound soft tissue
analgesia? - ANSWER: 60 to 90 seconds
Dry angles are an effective way to control saliva secretions from - ANSWER: stensen's
duct
what type of ZOE lacks strength and long-term durability? - ANSWER: type I
(temporary cement)
This type of cement is a hybrid of silicate and polycarboxilate cement - ANSWER:
glass ionomer
what material is supplied as a paste/paste system and also in cartridges? - ANSWER:
polyether
What does the term elastomeric mean? - ANSWER: having elastic or rubber-like
qualities
an alginate absorbing excess water is termed what? - ANSWER: imbibition
what is a final impression used for? - ANSWER: an accurate reproduction of teeth
and surrounding tissue
what is the negative reproduction of dental arches and surrounding tissues? -
ANSWER: impression
at what point in a procedure is a mylar matrix placed? - ANSWER: before etching
the retainer (toffelmire) is positioned from what surface? - ANSWER: buccal
Where is the wedge inserted to position the matrix band firmly against the gingival
margin? - ANSWER: lingual embrasure
what instruments are used to contour a matrix band? - ANSWER: burnisher or mirror
handle
a matrix band is made of what? - ANSWER: thin flexible steel
what stabilizes the tofflemire matrix band? - ANSWER: wooden wedge
, what type of stain can chlorhexidine cause? - ANSWER: extrinsic
most common type of temporary coverage for crown and bridge? - ANSWER: custom
provisional
why only intermittent pressure of a tooth when polishing? - ANSWER: heat dissipates
between strokes
Course, extra course, medium, fine and extrafine are different _____ of polishing
paste? - ANSWER: grit
removal of calculus, debris, stain, and plaque from teeth - ANSWER: oral prophylaxis
where on the tooth do you begin to use prophy cup? - ANSWER: gingival third
what is the different between catalyst and a base? - ANSWER: 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? - ANSWER: yes, because
its tooth colored
What is a class I cavity - ANSWER: decay in pits and fissures of occlusal surface
What is a class II cavity - ANSWER: decay on proximal (mesial or distal) surfaces of
premolars and molars
What is a class III cavity? - ANSWER: decay in proximal surfaces (Mesial or distal) of
incisors and canines
What is a class IV cavity? - ANSWER: decay in proximal surfaces (mesial or distal) of
incisors and canines and involves the incisal edge or angle of tooth
What is a class V cavity? - ANSWER: decay on the gingival third of facial or lingual
surface of any tooth
what is a class VI cavity? - ANSWER: decay on incisal edges of anterior teeth and the
cusp tips of posterior teeth caused by abrasion, wear, or defects
Stensen's duct - ANSWER: back cheek by first molar
pterygomandibular raphe - ANSWER: Fold of tissue that extends from the junction of
the hard and soft palates down to the mandible
gingival embrasure - ANSWER: triangular space of gums between the teeth
incisal embrasure - ANSWER: triangular space between incisal edge of teeth
