PA EFDA Boards FINAL EXAM PREP 2025/2026
ACCURATE QUESTIONS WITH VERIFIED CORRECT
ANSWERS || 100% GUARANTEED PASS
<LATEST VERSSION>
1. Oblique Ridge is only on.. - ANSWER✓ The occlusal surface of maxillary
molars.
2. Oblique ridge is formed by two triangular ridges extending from.. -
ANSWER✓ The Disto- buccal to the mesiolingual-lingual cusp.
3. There is only ____ oblique ridge on each maxillary molars. - ANSWER✓ 1
4. Maxillary Molars are the only teeth with an .... - ANSWER✓ Oblique Ridge.
5. Irregular Depressions or con cavities on the surface of anterior and posterior
teeth ... - ANSWER✓ Fossae
6. The depression or concavity found on the lingual surface of mandibular and
maxillary incisors located between the mesial and distal marginal ridges.. -
ANSWER✓ Lingual fossa
7. Depression of concavity found in the central portion of the occlusal surface
of molars.. - ANSWER✓ Dental Fossa
8. Located on the occlusal surface of the distal to the marginal ridge and mesial
to the distal marginal ridge.. - ANSWER✓ Triangular Fossa.
9. Groove that extends in a mesial- distal direction across the occlusal surface
and divides the buccal portion of the crown from the lingual portion... -
ANSWER✓ Central Developmental Groove.
,10. Groove that separated the buccal cusp molars.. - ANSWER✓ Buccal
Developmental Groove
11. Groove that separates the lingual cusps of molars. - ANSWER✓ Lingual
developmental groove.
12. Shallow, linear depression ( Grooves that are less distinct) - ANSWER✓
Supplemental Grooves.
13. A shallow depression adjacent to a developmental groove...
Also provides and escape for food from the occlusal surface during the
mastication process.. - ANSWER✓ Spillway
14. Efdas bust work under - ANSWER✓ Direct supervision of the dentist
15. Dentist needs to be in office for efda to practice - ANSWER✓ Direct
supervision
16. What can EFDAS do in PA - ANSWER✓ -rubber dams
-place amalgam / composite
-matrix band/ wedges
-apply bases and liners
-place sealants
-coronal polish
-take impressions
-perform fluoride treatment
17. Only tofflemire or auto matrix band can be used - ANSWER✓ Amalgam
18. Mylar strip, sectional matrix, tofflemire or auto matrix bands can be used.. -
ANSWER✓ Composite
19. Holds the band and securely in place and also prevents excess filling
material from escaping between the tooth and the matrix band (over hang) -
ANSWER✓ Wedge
,20. Forms the missing surface or wall and reestablishes the normal contour of
the prepared tooth while being filled with restorative material - ANSWER✓
Matrix band
21. When restoring posterior teeth, the marks left by the articulating paper
should appear - ANSWER✓ As dots
22. Which type of matrix is commonly used for amalgam restorations? -
ANSWER✓ Tofflemire matrix
23. When placing liners in the cavity preparation it is best to use a small -
ANSWER✓ Ball ended instrument
24. The metal alloy used in amalgam is primary composed of - ANSWER✓
Siiver
25. When performing composite restoration the composite is often places into
layers to - ANSWER✓ Reduce the effect or polymerization shrinkage
26. Which type of adhesive would typically be used to temporily cement crowns
and bridges? - ANSWER✓ Zinc oxide eugenol
27. Amalgam made from a combination of metals is referred to as an -
ANSWER✓ Alloy
28. Metals commonly found in amalgam is; - ANSWER✓ Sliver, tin copper and
zinc
29. The mixing process is called - ANSWER✓ Trifurcation
30. Leads to a increase in flow and corrosion and decrease strength . -
ANSWER✓ Gamma 2 phase
31. Amalgam break down also called - ANSWER✓ Creep
32. The slow change in dimensions of the amalgam prolonged exposure to
stress. - ANSWER✓ Creep
, 33. The major cause of gross fracture of amalgam restorations found in the -
ANSWER✓ Design of the cavity prep.
34. Characteristics of amalgam - ANSWER✓ Strength and setting time
determined by ;
1) the size and shape of the alloy particles
2) ratio of mercury to alloy
3) manipulation ( such as mixing time (trituration) and condensation
35. Acorde = - ANSWER✓ Condense
36. Particulars are rounded - ANSWER✓ Spherical alloy
37. Controlled to maintain desired average particle size and size distribution -
ANSWER✓ Lathe cute
38. The greater the percentage of mercury in the final amalgam, the greater the
expansion of the material and the lower the strength of the final amalgam -
ANSWER✓ Mercury - alloy ratio
39. The longer the mixing time, the less expansion or the greater contraction -
ANSWER✓ Trituration time
40. Increasing pressure during placement decreases the expansion - ANSWER✓
Condensation
41. Moisture greatly increases the amount of expansion in the alloy sand is even
more pronounced in zinc containing alloys. - ANSWER✓ Contamination
42. Produces drier mix, and lacks cohesiveness to mass when it is placed,
reduces amalgam strength.. - ANSWER✓ Under trituration
43. Results pin porosity or voids thats decreases strength . Results in excess
mercury that. Weakens the amalgam restoration and leaves it more
susceptible to corrosion and tarnish .. - ANSWER✓ Inadequate consecration
force
ACCURATE QUESTIONS WITH VERIFIED CORRECT
ANSWERS || 100% GUARANTEED PASS
<LATEST VERSSION>
1. Oblique Ridge is only on.. - ANSWER✓ The occlusal surface of maxillary
molars.
2. Oblique ridge is formed by two triangular ridges extending from.. -
ANSWER✓ The Disto- buccal to the mesiolingual-lingual cusp.
3. There is only ____ oblique ridge on each maxillary molars. - ANSWER✓ 1
4. Maxillary Molars are the only teeth with an .... - ANSWER✓ Oblique Ridge.
5. Irregular Depressions or con cavities on the surface of anterior and posterior
teeth ... - ANSWER✓ Fossae
6. The depression or concavity found on the lingual surface of mandibular and
maxillary incisors located between the mesial and distal marginal ridges.. -
ANSWER✓ Lingual fossa
7. Depression of concavity found in the central portion of the occlusal surface
of molars.. - ANSWER✓ Dental Fossa
8. Located on the occlusal surface of the distal to the marginal ridge and mesial
to the distal marginal ridge.. - ANSWER✓ Triangular Fossa.
9. Groove that extends in a mesial- distal direction across the occlusal surface
and divides the buccal portion of the crown from the lingual portion... -
ANSWER✓ Central Developmental Groove.
,10. Groove that separated the buccal cusp molars.. - ANSWER✓ Buccal
Developmental Groove
11. Groove that separates the lingual cusps of molars. - ANSWER✓ Lingual
developmental groove.
12. Shallow, linear depression ( Grooves that are less distinct) - ANSWER✓
Supplemental Grooves.
13. A shallow depression adjacent to a developmental groove...
Also provides and escape for food from the occlusal surface during the
mastication process.. - ANSWER✓ Spillway
14. Efdas bust work under - ANSWER✓ Direct supervision of the dentist
15. Dentist needs to be in office for efda to practice - ANSWER✓ Direct
supervision
16. What can EFDAS do in PA - ANSWER✓ -rubber dams
-place amalgam / composite
-matrix band/ wedges
-apply bases and liners
-place sealants
-coronal polish
-take impressions
-perform fluoride treatment
17. Only tofflemire or auto matrix band can be used - ANSWER✓ Amalgam
18. Mylar strip, sectional matrix, tofflemire or auto matrix bands can be used.. -
ANSWER✓ Composite
19. Holds the band and securely in place and also prevents excess filling
material from escaping between the tooth and the matrix band (over hang) -
ANSWER✓ Wedge
,20. Forms the missing surface or wall and reestablishes the normal contour of
the prepared tooth while being filled with restorative material - ANSWER✓
Matrix band
21. When restoring posterior teeth, the marks left by the articulating paper
should appear - ANSWER✓ As dots
22. Which type of matrix is commonly used for amalgam restorations? -
ANSWER✓ Tofflemire matrix
23. When placing liners in the cavity preparation it is best to use a small -
ANSWER✓ Ball ended instrument
24. The metal alloy used in amalgam is primary composed of - ANSWER✓
Siiver
25. When performing composite restoration the composite is often places into
layers to - ANSWER✓ Reduce the effect or polymerization shrinkage
26. Which type of adhesive would typically be used to temporily cement crowns
and bridges? - ANSWER✓ Zinc oxide eugenol
27. Amalgam made from a combination of metals is referred to as an -
ANSWER✓ Alloy
28. Metals commonly found in amalgam is; - ANSWER✓ Sliver, tin copper and
zinc
29. The mixing process is called - ANSWER✓ Trifurcation
30. Leads to a increase in flow and corrosion and decrease strength . -
ANSWER✓ Gamma 2 phase
31. Amalgam break down also called - ANSWER✓ Creep
32. The slow change in dimensions of the amalgam prolonged exposure to
stress. - ANSWER✓ Creep
, 33. The major cause of gross fracture of amalgam restorations found in the -
ANSWER✓ Design of the cavity prep.
34. Characteristics of amalgam - ANSWER✓ Strength and setting time
determined by ;
1) the size and shape of the alloy particles
2) ratio of mercury to alloy
3) manipulation ( such as mixing time (trituration) and condensation
35. Acorde = - ANSWER✓ Condense
36. Particulars are rounded - ANSWER✓ Spherical alloy
37. Controlled to maintain desired average particle size and size distribution -
ANSWER✓ Lathe cute
38. The greater the percentage of mercury in the final amalgam, the greater the
expansion of the material and the lower the strength of the final amalgam -
ANSWER✓ Mercury - alloy ratio
39. The longer the mixing time, the less expansion or the greater contraction -
ANSWER✓ Trituration time
40. Increasing pressure during placement decreases the expansion - ANSWER✓
Condensation
41. Moisture greatly increases the amount of expansion in the alloy sand is even
more pronounced in zinc containing alloys. - ANSWER✓ Contamination
42. Produces drier mix, and lacks cohesiveness to mass when it is placed,
reduces amalgam strength.. - ANSWER✓ Under trituration
43. Results pin porosity or voids thats decreases strength . Results in excess
mercury that. Weakens the amalgam restoration and leaves it more
susceptible to corrosion and tarnish .. - ANSWER✓ Inadequate consecration
force
