1 | P a g e | © copyright 2026/2027 Grade A+
|
EFDA Practice Questions and
Correct Answers | Latest Update
In the Federation Dentaire International System for numbering, the first
number represents a _________, while the second number represents a
_________.
✓ quadrant, tooth
What is the visible portion of the anatomical crown known as?
✓ the clinical crown
The area where the roots divide
✓ furcation
The point or area where approximating teeth in the same arch touch or meet
each other is referred to as the ________.
✓ contact area
Where are the TWO purposes of contact areas?
✓ -to keep food from packing between the teeth
-help stabilize the dental arches
Master01 | October, 2026/2027 | Latest update
, 1 | P a g e | © copyright 2026/2027 Grade A+
|
Coronal to the actual division into two or more roots is a concavity that
extends to or nearly to the CEJ. This concavity is called
✓ the furrow
What is the HARDEST tissue in the body?
✓ enamel
What cells form enamel?
✓ ameloblasts
The bulk of the tooth is made up of
✓ dentin
In permanent teeth, the process of enamel formation is completed about ___
years before eruption.
✓ 3
What is the composition of enamel?
Master01 | October, 2026/2027 | Latest update
, 1 | P a g e | © copyright 2026/2027 Grade A+
|
✓ 95% inorganic matter, 5% organic matter and water
What is the SECOND hardest material in the body?
✓ dentin
What is the composition of dentin?
✓ 70% inorganic, 20% organic, 10% water
The three major types of dentin
✓ primary, secondary, reparative
What type of dentin is a DEFENSE reaction to an area of injury?
✓ reparative dentin
What has the HIGHEST fluoride content of all the materialized tissue?
✓ cementum
The two types of cementum
✓ acellular and cellular
Master01 | October, 2026/2027 | Latest update
, 1 | P a g e | © copyright 2026/2027 Grade A+
|
What type of cementum ACTIVELY produces new layers of cementum
throughout the life of the tooth?
✓ cellular
What teeth have the cusp of Carabelli?
✓ maxillary first molars
The ridge formed by the union of two triangular ridges
✓ transverse ridge
The spillway provides an escape for food from the _______ surface during the
mastication (chewing) process.
✓ occlusal
The uncut tooth structure adjacent to the cavity prep
✓ cavosurface
line angle
✓ two walls
Master01 | October, 2024/2025 | Latest update
|
EFDA Practice Questions and
Correct Answers | Latest Update
In the Federation Dentaire International System for numbering, the first
number represents a _________, while the second number represents a
_________.
✓ quadrant, tooth
What is the visible portion of the anatomical crown known as?
✓ the clinical crown
The area where the roots divide
✓ furcation
The point or area where approximating teeth in the same arch touch or meet
each other is referred to as the ________.
✓ contact area
Where are the TWO purposes of contact areas?
✓ -to keep food from packing between the teeth
-help stabilize the dental arches
Master01 | October, 2026/2027 | Latest update
, 1 | P a g e | © copyright 2026/2027 Grade A+
|
Coronal to the actual division into two or more roots is a concavity that
extends to or nearly to the CEJ. This concavity is called
✓ the furrow
What is the HARDEST tissue in the body?
✓ enamel
What cells form enamel?
✓ ameloblasts
The bulk of the tooth is made up of
✓ dentin
In permanent teeth, the process of enamel formation is completed about ___
years before eruption.
✓ 3
What is the composition of enamel?
Master01 | October, 2026/2027 | Latest update
, 1 | P a g e | © copyright 2026/2027 Grade A+
|
✓ 95% inorganic matter, 5% organic matter and water
What is the SECOND hardest material in the body?
✓ dentin
What is the composition of dentin?
✓ 70% inorganic, 20% organic, 10% water
The three major types of dentin
✓ primary, secondary, reparative
What type of dentin is a DEFENSE reaction to an area of injury?
✓ reparative dentin
What has the HIGHEST fluoride content of all the materialized tissue?
✓ cementum
The two types of cementum
✓ acellular and cellular
Master01 | October, 2026/2027 | Latest update
, 1 | P a g e | © copyright 2026/2027 Grade A+
|
What type of cementum ACTIVELY produces new layers of cementum
throughout the life of the tooth?
✓ cellular
What teeth have the cusp of Carabelli?
✓ maxillary first molars
The ridge formed by the union of two triangular ridges
✓ transverse ridge
The spillway provides an escape for food from the _______ surface during the
mastication (chewing) process.
✓ occlusal
The uncut tooth structure adjacent to the cavity prep
✓ cavosurface
line angle
✓ two walls
Master01 | October, 2024/2025 | Latest update
