Question 1

All of the following are characteristic of the posteruptive stage EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)  Root development 
B)  Occlusal wear 
C)  Mesial drift 
D)  Supraeruption 
A)  Root development 
B)  Occlusal wear 
C)  Mesial drift 
D)  Supraeruption

Question 2

Which of the following are necessary for the tooth eruption to occur (Select all that apply. )?

Accepted Answer

A)  The presence of the outer layers of enamel organ 
B)  Osteoclastic activity 
C)  The rhythmic cycle of bone development 
D)  The absence of the dental sac 
E)  The presence of the dental follicle 
A)  The presence of the outer layers of enamel organ 
B)  Osteoclastic activity 
C)  The rhythmic cycle of bone development 
D)  The absence of the dental sac 
E)  The presence of the dental follicle

Question 3

Root elongation is the main factor in the tooth's eruption into the oral cavity.

Accepted Answer

A) True 
 B)False

Question 4

If a root is damaged during formation,which of the following would occur?

Accepted Answer

A)  Tooth eruption ceases. 
B)  Tooth eruption continues. 
C)  Root decay 
D)  Ankylosis 
A)  Tooth eruption ceases. 
B)  Tooth eruption continues. 
C)  Root decay 
D)  Ankylosis

Question 5

Active tooth eruption refers to the emergence of a crown into the oral cavity.This eruptive process is usually divided into the pre-eruptive and posteruptive stages.

Accepted Answer

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

Question 6

If Hertwig's root sheath is destroyed the tooth will not erupt.

Accepted Answer

A) True 
 B)False

Question 7

An ankylosed deciduous tooth will prevent the eruption of a permanent tooth because the alveolar crest of bone fuses in the cervical area with dentin of a resorbing root.

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 8

It is possible for a child to have a deciduous tooth and its permanent counterpart at the same time.This can occur when the permanent teeth erupt.

Accepted Answer

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

Question 9

A fully formed impacted third molar is technically in the posteruptive stage because the roots are formed and this tooth would erupt if not impeded by another tooth.

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.

Exam 22: Eruption and Shedding of Teeth

All of the following are characteristic of the posteruptive stage EXCEPT one.Which one is the EXCEPTION?

Which of the following are necessary for the tooth eruption to occur (Select all that apply. )?

Root elongation is the main factor in the tooth's eruption into the oral cavity.

If a root is damaged during formation,which of the following would occur?

Active tooth eruption refers to the emergence of a crown into the oral cavity.This eruptive process is usually divided into the pre-eruptive and posteruptive stages.

If Hertwig's root sheath is destroyed the tooth will not erupt.

An ankylosed deciduous tooth will prevent the eruption of a permanent tooth because the alveolar crest of bone fuses in the cervical area with dentin of a resorbing root.

It is possible for a child to have a deciduous tooth and its permanent counterpart at the same time.This can occur when the permanent teeth erupt.

A fully formed impacted third molar is technically in the posteruptive stage because the roots are formed and this tooth would erupt if not impeded by another tooth.

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

Root Morphology

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

Oral Mucous Membrane

The Tongue

Histology of the Salivary Glands

Osteology of the Skull

Nose, Nasal Cavity, and Paranasal Sinuses

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

Tempo-romandibular Joint

Muscles of Facial Expression

Soft Palate and Pharynx

Arterial Supply and Venous Drainage

Salivary Glands

Nervous System

Lymphatics and Spread of Dental Infection

Anatomical Considerations of Local Anesthesia

Filters