Question 1

Which of the following travel through the apical foramen (select all that apply)?

Accepted Answer

A)  Nerves 
B)  Enamel pearls 
C)  Blood vessels 
D)  Nutrients 
E)  Lymphatic vessels 
A)  Nerves 
B)  Enamel pearls 
C)  Blood vessels 
D)  Nutrients 
E)  Lymphatic vessels A, C, D, E

Question 2

Mandibular premolars typically have two pulp canals. Maxillary first premolars are more likely than maxillary second premolars to have two pulp canals.

Accepted Answer

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

Question 3

Root pain due to exposed dentin is caused by gingival recession. Exposed spots of dentin can stimulate pulpal nerves through the cementoenamel junction (CEJ).

Accepted Answer

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

Question 4

Each of the following is a characteristic of the periodontal ligament EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Capable of regeneration 
B)  Capable of compression 
C)  Provides tension 
D)  Provides support 
A)  Capable of regeneration 
B)  Capable of compression 
C)  Provides tension 
D)  Provides support

Question 5

Match between columns
                        Premises: Lateral foramen
CEJ
Pulp chamber
Apex
Furcation
Root surface

Accepted Answer

The Answer of Accessory canal(s) and Cementum meets enamel and is...

Question 6

Pain within the root (root pain) can be elicited by which of the following (select all that apply)?

Accepted Answer

A)  Root decay 
B)  Root resorption 
C)  Secondary dentin 
D)  Dehydration 
E)  Reparative dentin 
A)  Root decay 
B)  Root resorption 
C)  Secondary dentin 
D)  Dehydration 
E)  Reparative dentin

Question 7

The figure below shows a mesial view (A) and a distal view (B) of a linguobuccal section. Identify the tooth.

Accepted Answer

A)  Mandibular first premolar 
B)  Mandibular second premolar 
C)  Mandibular first molar 
D)  Mandibular second molar 
A)  Mandibular first premolar 
B)  Mandibular second premolar 
C)  Mandibular first molar 
D)  Mandibular second molar

Question 8

Blood vessels traveling through the apical foramen support nerves and odontoblasts because the blood supply enables delivery of essential nutrients as well as removal of harmful products.

Accepted Answer

A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct. 
A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct.

Question 9

If there are two pulp canals in a root, there could be one or two openings in the root.

Accepted Answer

A) True 
 B)False

Question 10

Teeth with curved roots afford resistance to apical and distal forces but are vulnerable to occlusal forces. Roots with triangular cross section are particularly vulnerable to lateral displacement.

Accepted Answer

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

Question 11

During hypercementosis, excess cementum is deposited

Accepted Answer

A)  Along the CEJ 
B)  Irregularly, throughout the root surface 
C)  At the dentinocemental junction 
D)  At the apex of the root 
A)  Along the CEJ 
B)  Irregularly, throughout the root surface 
C)  At the dentinocemental junction 
D)  At the apex of the root

Question 12

Orthodontics requires a sustained pressure to move teeth to a new location. Osteoblasts respond to the new location by forming new bone.

Accepted Answer

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

Question 13

Cementum formed during hypercementosis is different from the cementum lining the root because this newly formed product can continue to grow and add on to itself.

Accepted Answer

A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct. 
A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct.

Question 14

Mandibular second molars often have two canals in each root.

Accepted Answer

A) True 
 B)False

Question 15

Each of the following teeth frequently has two roots EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Maxillary first premolar 
B)  Maxillary second premolar 
C)  Mandibular first molar 
D)  Mandibular second molar 
A)  Maxillary first premolar 
B)  Maxillary second premolar 
C)  Mandibular first molar 
D)  Mandibular second molar

Question 16

Which of the following best describes the root canal opening(s) in the figure below?

Accepted Answer

A)  Accessory root canals 
B)  One main and one accessory root canal 
C)  Two apical root canals 
A)  Accessory root canals 
B)  One main and one accessory root canal 
C)  Two apical root canals

Question 17

A patient who has sensitivity in the mandibular anterior area due to abrasion is interested in having her teeth bleached. Which factor could contribute to her sensitivity?

Accepted Answer

A)  Discolored teeth 
B)  Thin, uneven cementum 
C)  Root canal treatment on mandibular central incisors 
D)  Slight mobility 
A)  Discolored teeth 
B)  Thin, uneven cementum 
C)  Root canal treatment on mandibular central incisors 
D)  Slight mobility

Question 18

Each of the following root characteristics provides significant resistance to displacement from traumatic forces EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Root grooves 
B)  Root concavities 
C)  A short, smooth root 
D)  Multiple roots 
A)  Root grooves 
B)  Root concavities 
C)  A short, smooth root 
D)  Multiple roots

Question 19

An 11-year-old boy, Ronald, has an overjet and is being treated by an orthodontist. At a routine appointment, Ronald mentions that he feels some pressure in the area of his maxillary anterior incisors and asks if this is unusual. The orthodontist examines Ronald, makes some adjustments to his appliance, and reviews his radiographs. He informs Ronald that he is pleased with the movement of his teeth and that he may feel occasional pressure throughout treatment. In Ronald's case, each of the following radiographic findings is considered normal during orthodontic treatment EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Bone remodeling 
B)  Widening of the PDL 
C)  Bone resorption 
D)  Root resorption 
A)  Bone remodeling 
B)  Widening of the PDL 
C)  Bone resorption 
D)  Root resorption

Question 20

Pressure and temperature responses are elicited by all of the following EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Bone 
B)  Periodontal ligament 
C)  Gingiva 
D)  Pulp tissue 
A)  Bone 
B)  Periodontal ligament 
C)  Gingiva 
D)  Pulp tissue

Exam 11: Root Morphology

Which of the following travel through the apical foramen (select all that apply)?

Mandibular premolars typically have two pulp canals. Maxillary first premolars are more likely than maxillary second premolars to have two pulp canals.

Root pain due to exposed dentin is caused by gingival recession. Exposed spots of dentin can stimulate pulpal nerves through the cementoenamel junction (CEJ).

Each of the following is a characteristic of the periodontal ligament EXCEPT one. Which one is the EXCEPTION?

Pain within the root (root pain) can be elicited by which of the following (select all that apply)?

The figure below shows a mesial view (A) and a distal view (B) of a linguobuccal section. Identify the tooth.

Blood vessels traveling through the apical foramen support nerves and odontoblasts because the blood supply enables delivery of essential nutrients as well as removal of harmful products.

If there are two pulp canals in a root, there could be one or two openings in the root.

Teeth with curved roots afford resistance to apical and distal forces but are vulnerable to occlusal forces. Roots with triangular cross section are particularly vulnerable to lateral displacement.

During hypercementosis, excess cementum is deposited

Orthodontics requires a sustained pressure to move teeth to a new location. Osteoblasts respond to the new location by forming new bone.

Cementum formed during hypercementosis is different from the cementum lining the root because this newly formed product can continue to grow and add on to itself.

Mandibular second molars often have two canals in each root.

Each of the following teeth frequently has two roots EXCEPT one. Which one is the EXCEPTION?

Which of the following best describes the root canal opening(s) in the figure below?

A patient who has sensitivity in the mandibular anterior area due to abrasion is interested in having her teeth bleached. Which factor could contribute to her sensitivity?

Each of the following root characteristics provides significant resistance to displacement from traumatic forces EXCEPT one. Which one is the EXCEPTION?

Pressure and temperature responses are elicited by all of the following EXCEPT one. Which one is the EXCEPTION?

Oral Cavity

The Tooth: Functions and Terms

Fundamental and Preventive Curvatures

Dentition

Development, Form, and Eruption

Occlusion

Dental Anomalies

Supporting Structures

Clinical Considerations

Tooth Identification

Incisors

Canines

Premolars

Molars

Deciduous Dentition

Basic Tissues

Development of Orofacial Complex

Dental Lamina and Enamel Organ

Enamel, Dentin, and Pulp

Root Formation and Attachment Apparatus

Eruption and Shedding of Teeth

Oral Mucous Membrane

The Tongue

Salivary Glands

Osteology of the Skull

Nose, Nasal Cavity, and Paranasal Sinuses

Muscles of Mastication, Hyoid Muscles, and Sternocleidomastoid and Trapezius Muscles

Temporomandibular Joint

Muscles of Facial Expression

Soft Palate and Pharynx

Arterial Supply and Venous Drainage

Salivary Glands

Nervous System

Lymphatics and Spread of Dental Infection

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