Best Grades | Must Pass | Latest Update | Correct Answers | 2026/ 2027
"Mock" Written EFDA Board Questions
and Correct Answers | Latest Update
Why is a thin layer of calcium hydroxide considered therapeutic when placed in a deep
prep?
Stimulates a thickening of dentin
At which line angles are the retention grooves in a class II amalgam located?
Linguoaxial and buccoaxial
What is dentin primarily composed of?
Dentinal tubules with protoplasmic extensions
What is enamel composed of?
95% organic matter
At which portion of the tooth is enamel thicker?
Incisal/occlusal
Which is darker in color, enamel or dentin?
Dentin
ZOE placed in a deep DO amalgam to replace axial and pulpal walls should have what type
of base shape?
Rounded/beveled axis-pulpal line angle
for inquiry mail me @
, Best Grades | Must Pass | Latest Update | Correct Answers | 2026 2027
Which material is NOT compatible with composite?
Zinc oxide eugenol cement
A lingual pit on tooth #7 is what type of restoration?
Class I
Where would you place a base?
On dentin surfaces
Which metal adds strength and decreases expansion of amalgam?
Copper
What is the order of placement in a very deep prep for amalgam that has a near-pupal
exposure and loss of axial wall contour?
Calcium hydroxide, cavity varnish, zinc phosphate cement
What component results in decreased expansion of amalgam?
High copper content
What is galvanization?
Occurs when dissimilar metals touch inside the mouth and produce an electric
current that causes pain
Which material has poly acrylic acid as a component of its liquid?
for inquiry mail me @
"Mock" Written EFDA Board Questions
and Correct Answers | Latest Update
Why is a thin layer of calcium hydroxide considered therapeutic when placed in a deep
prep?
Stimulates a thickening of dentin
At which line angles are the retention grooves in a class II amalgam located?
Linguoaxial and buccoaxial
What is dentin primarily composed of?
Dentinal tubules with protoplasmic extensions
What is enamel composed of?
95% organic matter
At which portion of the tooth is enamel thicker?
Incisal/occlusal
Which is darker in color, enamel or dentin?
Dentin
ZOE placed in a deep DO amalgam to replace axial and pulpal walls should have what type
of base shape?
Rounded/beveled axis-pulpal line angle
for inquiry mail me @
, Best Grades | Must Pass | Latest Update | Correct Answers | 2026 2027
Which material is NOT compatible with composite?
Zinc oxide eugenol cement
A lingual pit on tooth #7 is what type of restoration?
Class I
Where would you place a base?
On dentin surfaces
Which metal adds strength and decreases expansion of amalgam?
Copper
What is the order of placement in a very deep prep for amalgam that has a near-pupal
exposure and loss of axial wall contour?
Calcium hydroxide, cavity varnish, zinc phosphate cement
What component results in decreased expansion of amalgam?
High copper content
What is galvanization?
Occurs when dissimilar metals touch inside the mouth and produce an electric
current that causes pain
Which material has poly acrylic acid as a component of its liquid?
for inquiry mail me @
