EFDA Practice Exam Questions &
Answers (Grade A+)
In the Federation Dentaire International System for numbering, the
first number represents a _________, while the second number
represents a _________. -
correct answer ✅quadrant, tooth
What is the visible portion of the anatomical crown known as? -
correct answer ✅the clinical crown
The area where the roots divide -
correct answer ✅furcation
The point or area where approximating teeth in the same arch
touch or meet each other is referred to as the ________. -
correct answer ✅contact area
Where are the TWO purposes of contact areas? -
correct answer ✅-to keep food from packing between the teeth
-help stabilize the dental arches
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 -
correct answer ✅the furrow
,EFDA Practice Exam Questions &
Answers (Grade A+)
What is the HARDEST tissue in the body? -
correct answer ✅enamel
What cells form enamel? -
correct answer ✅ameloblasts
The bulk of the tooth is made up of -
correct answer ✅dentin
In permanent teeth, the process of enamel formation is completed
about ___ years before eruption. -
correct answer ✅3
What is the composition of enamel? -
correct answer ✅95% inorganic matter, 5% organic matter and
water
What is the SECOND hardest material in the body? -
correct answer ✅dentin
,EFDA Practice Exam Questions &
Answers (Grade A+)
What is the composition of dentin? -
correct answer ✅70% inorganic, 20% organic, 10% water
The three major types of dentin -
correct answer ✅primary, secondary, reparative
What type of dentin is a DEFENSE reaction to an area of injury? -
correct answer ✅reparative dentin
What has the HIGHEST fluoride content of all the materialized
tissue? -
correct answer ✅cementum
The two types of cementum -
correct answer ✅acellular and cellular
What type of cementum ACTIVELY produces new layers of
cementum throughout the life of the tooth? -
correct answer ✅cellular
What teeth have the cusp of Carabelli? -
correct answer ✅maxillary first molars
, EFDA Practice Exam Questions &
Answers (Grade A+)
The ridge formed by the union of two triangular ridges -
correct answer ✅transverse ridge
The spillway provides an escape for food from the _______ surface
during the mastication (chewing) process. -
correct answer ✅occlusal
The uncut tooth structure adjacent to the cavity prep -
correct answer ✅cavosurface
line angle -
correct answer ✅two walls
point angle -
correct answer ✅three walls
A thin soft tissue that is loosely attached to the underlying bone -
correct answer ✅alveolar mucosa
T or F
Answers (Grade A+)
In the Federation Dentaire International System for numbering, the
first number represents a _________, while the second number
represents a _________. -
correct answer ✅quadrant, tooth
What is the visible portion of the anatomical crown known as? -
correct answer ✅the clinical crown
The area where the roots divide -
correct answer ✅furcation
The point or area where approximating teeth in the same arch
touch or meet each other is referred to as the ________. -
correct answer ✅contact area
Where are the TWO purposes of contact areas? -
correct answer ✅-to keep food from packing between the teeth
-help stabilize the dental arches
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 -
correct answer ✅the furrow
,EFDA Practice Exam Questions &
Answers (Grade A+)
What is the HARDEST tissue in the body? -
correct answer ✅enamel
What cells form enamel? -
correct answer ✅ameloblasts
The bulk of the tooth is made up of -
correct answer ✅dentin
In permanent teeth, the process of enamel formation is completed
about ___ years before eruption. -
correct answer ✅3
What is the composition of enamel? -
correct answer ✅95% inorganic matter, 5% organic matter and
water
What is the SECOND hardest material in the body? -
correct answer ✅dentin
,EFDA Practice Exam Questions &
Answers (Grade A+)
What is the composition of dentin? -
correct answer ✅70% inorganic, 20% organic, 10% water
The three major types of dentin -
correct answer ✅primary, secondary, reparative
What type of dentin is a DEFENSE reaction to an area of injury? -
correct answer ✅reparative dentin
What has the HIGHEST fluoride content of all the materialized
tissue? -
correct answer ✅cementum
The two types of cementum -
correct answer ✅acellular and cellular
What type of cementum ACTIVELY produces new layers of
cementum throughout the life of the tooth? -
correct answer ✅cellular
What teeth have the cusp of Carabelli? -
correct answer ✅maxillary first molars
, EFDA Practice Exam Questions &
Answers (Grade A+)
The ridge formed by the union of two triangular ridges -
correct answer ✅transverse ridge
The spillway provides an escape for food from the _______ surface
during the mastication (chewing) process. -
correct answer ✅occlusal
The uncut tooth structure adjacent to the cavity prep -
correct answer ✅cavosurface
line angle -
correct answer ✅two walls
point angle -
correct answer ✅three walls
A thin soft tissue that is loosely attached to the underlying bone -
correct answer ✅alveolar mucosa
T or F
