Question 1

The intermediate layer of cementum is _____ thick.

Accepted Answer

A)  10 cm 
B)  10 mm 
C)  10 µm 
D)  10 nm 
A)  10 cm 
B)  10 mm 
C)  10 µm 
D)  10 nm C

Question 2

Which condition occurs most often?

Accepted Answer

A)  Cementum meets the enamel. 
B)  Cementum forms on the enamel. 
C)  Enamel forms over the cementum. 
D)  A gap occurs between the cementum and enamel. 
A)  Cementum meets the enamel. 
B)  Cementum forms on the enamel. 
C)  Enamel forms over the cementum. 
D)  A gap occurs between the cementum and enamel. B

Question 3

Cementum is highly vascularized.

Accepted Answer

A) True 
 B)False  False

Question 4

At which of the following the cementum is thickest?

Accepted Answer

A)  Apex of the root 
B)  Cementoenamel junction 
C)  Cervical region of the root 
D)  Furcation of multirooted teeth 
A)  Apex of the root 
B)  Cementoenamel junction 
C)  Cervical region of the root 
D)  Furcation of multirooted teeth

Question 5

Intermediate cementum forms completely,before the deposition of secondary cementum begins.

Accepted Answer

A) True 
 B)False

Question 6

Cementum forms more rapidly than dentin.

Accepted Answer

A) True 
 B)False

Question 7

Intermediate cementum is softer than dentin.

Accepted Answer

A) True 
 B)False

Question 8

Why is cementum insensitive to pain?

Accepted Answer

A)  Cementum is more permeable than dentin. 
B)  Dentin forms more quickly than cementum. 
C)  Cells deep within the cementum are less active. 
D)  Cementum has no nerve or blood vessel innervation. 
A)  Cementum is more permeable than dentin. 
B)  Dentin forms more quickly than cementum. 
C)  Cells deep within the cementum are less active. 
D)  Cementum has no nerve or blood vessel innervation.

Question 9

Which percentage of collagen is found in organic cementum?

Accepted Answer

A)  20% to 25% 
B)  30% to 35% 
C)  40% to 45% 
D)  50% to 55% 
A)  20% to 25% 
B)  30% to 35% 
C)  40% to 45% 
D)  50% to 55%

Question 10

The initial layer of cementum contains an enamelin-like protein.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following best defines a cementicle?

Accepted Answer

A)  An ovoid calcification in the periodontal ligament (PDL) 
B)  A spindle-shaped cell found in the connective tissue 
C)  A flattened and elongated cell found in the coronal portions of the pulp 
D)  An irregularly shaped calcified mass appearing in the canal of the pulp 
A)  An ovoid calcification in the periodontal ligament (PDL) 
B)  A spindle-shaped cell found in the connective tissue 
C)  A flattened and elongated cell found in the coronal portions of the pulp 
D)  An irregularly shaped calcified mass appearing in the canal of the pulp

Question 12

Which of the following is formed by cementoblasts and maintained by cementocytes?

Accepted Answer

A)  Extrinsic fiber bundles 
B)  Intrinsic fibers of cementum 
C)  Calcified ligament fiber bundles 
D)  Principal fibers of the periodontal ligament. 
A)  Extrinsic fiber bundles 
B)  Intrinsic fibers of cementum 
C)  Calcified ligament fiber bundles 
D)  Principal fibers of the periodontal ligament.

Question 13

Which is the preferred term for the first layer of cementum that is deposited by the inner layer of the epithelial cells of the root sheath?

Accepted Answer

A)  Cementoid layer 
B)  Intermediate cementum 
C)  Celluluar cementum 
D)  Acellular cementum 
A)  Cementoid layer 
B)  Intermediate cementum 
C)  Celluluar cementum 
D)  Acellular cementum

Question 14

Some __________ have long processes that lie in canaliculi.

Accepted Answer

A)  lacunae 
B)  cementicles 
C)  cementocytes 
D)  collagen fibers 
A)  lacunae 
B)  cementicles 
C)  cementocytes 
D)  collagen fibers

Question 15

The area where cemental resorption stops and deposition begins is called a

Accepted Answer

A)  cementicle. 
B)  reversal line. 
C)  cementoblast. 
D)  cementocyte. 
A)  cementicle. 
B)  reversal line. 
C)  cementoblast. 
D)  cementocyte.

Question 16

A continuing increase of cementum due to aging may obstruct the

Accepted Answer

A)  apical canal. 
B)  periodontal ligament space. 
C)  occlusion. 
D)  pulp horns. 
A)  apical canal. 
B)  periodontal ligament space. 
C)  occlusion. 
D)  pulp horns.

Question 17

Incremental lines in cementum indicate _________.

Accepted Answer

A)  trauma 
B)  rhythmic deposition 
C)  developmental anomalies 
D)  the presence of odontocytes 
A)  trauma 
B)  rhythmic deposition 
C)  developmental anomalies 
D)  the presence of odontocytes

Question 18

Cementocytes found deep in the cementum have _________ organelles than those found near the surface of the cementum.

Accepted Answer

A)  more 
B)  fewer 
C)  larger 
D)  smaller 
A)  more 
B)  fewer 
C)  larger 
D)  smaller

Question 19

In what percentage of cases does cementum meet enamel?

Accepted Answer

A)  0% 
B)  10% 
C)  30% 
D)  60% 
A)  0% 
B)  10% 
C)  30% 
D)  60%

Question 20

Cementum resorption is rare,even in older patients.In fact,cementum is more resistant to resorption than bone.

Accepted Answer

A)  Both statements are true. 
B)  Both statements are false. 
C)  The first statement is true;the second is false. 
D)  The first statement is false;the second is true. 
A)  Both statements are true. 
B)  Both statements are false. 
C)  The first statement is true;the second is false. 
D)  The first statement is false;the second is true.

The intermediate layer of cementum is _____ thick.

Which condition occurs most often?

Cementum is highly vascularized.

At which of the following the cementum is thickest?

Intermediate cementum forms completely,before the deposition of secondary cementum begins.

Cementum forms more rapidly than dentin.

Intermediate cementum is softer than dentin.

Why is cementum insensitive to pain?

Which percentage of collagen is found in organic cementum?

The initial layer of cementum contains an enamelin-like protein.

Which of the following best defines a cementicle?

Which of the following is formed by cementoblasts and maintained by cementocytes?

Which is the preferred term for the first layer of cementum that is deposited by the inner layer of the epithelial cells of the root sheath?

Some __________ have long processes that lie in canaliculi.

The area where cemental resorption stops and deposition begins is called a

A continuing increase of cementum due to aging may obstruct the

Incremental lines in cementum indicate _________.

Cementocytes found deep in the cementum have _________ organelles than those found near the surface of the cementum.

In what percentage of cases does cementum meet enamel?

Cementum resorption is rare,even in older patients.In fact,cementum is more resistant to resorption than bone.

Development and Structure of Cells and Tissues

Structure and Function of Cells, tissues, and Organs

Development of the Oral Facial Region

Development of the Face and Palate

Development of Teeth

Eruption and Shedding of Teeth

Enamel

Dentin

Dental Pulp

Periodontium: Periodontal Ligament

Periodontium: Alveolar Process and Cementum

Temporomandibular Joint

Oral Mucosa

Salivary Glands and Tonsils

Biofilms

Filters

Exam 10: Cementum

The intermediate layer of cementum is _____ thick.

Which condition occurs most often?

Cementum is highly vascularized.

At which of the following the cementum is thickest?

Intermediate cementum forms completely,before the deposition of secondary cementum begins.

Cementum forms more rapidly than dentin.

Intermediate cementum is softer than dentin.

Why is cementum insensitive to pain?

Which percentage of collagen is found in organic cementum?

The initial layer of cementum contains an enamelin-like protein.

Which of the following best defines a cementicle?

Which of the following is formed by cementoblasts and maintained by cementocytes?

Which is the preferred term for the first layer of cementum that is deposited by the inner layer of the epithelial cells of the root sheath?

Some __________ have long processes that lie in canaliculi.

The area where cemental resorption stops and deposition begins is called a

A continuing increase of cementum due to aging may obstruct the

Incremental lines in cementum indicate _________.

Cementocytes found deep in the cementum have _________ organelles than those found near the surface of the cementum.

In what percentage of cases does cementum meet enamel?

Cementum resorption is rare,even in older patients.In fact,cementum is more resistant to resorption than bone.

Development and Structure of Cells and Tissues

Structure and Function of Cells, tissues, and Organs

Development of the Oral Facial Region

Development of the Face and Palate

Development of Teeth

Eruption and Shedding of Teeth

Enamel

Dentin

Dental Pulp

Periodontium: Periodontal Ligament

Periodontium: Alveolar Process and Cementum

Temporomandibular Joint

Oral Mucosa

Salivary Glands and Tonsils

Biofilms

Filters