Question 1

The dental papilla is first seen in the

Accepted Answer

A)  early bud stage 
B)  late bud stage 
C)  cap stage 
D)  bell stage 
A)  early bud stage 
B)  late bud stage 
C)  cap stage 
D)  bell stage

Question 2

The permanent molars develop from successional lamina.

Accepted Answer

A) True 
 B)False

Question 3

The vestibular lamina forms in a lingual direction from the dental lamina.

Accepted Answer

A) True 
 B)False

Question 4

Each of the following statements accurately describes aspects of the development of enamel organ EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)  Buds from the dental lamina project into deeper underlying connective tissue. 
B)  The bud stage is the first stage in the development of enamel organ. 
C)  Enamel organ will eventually form enamel and cementum of teeth. 
D)  Cells in the middle of the buds come from outer layers of oral epithelium. 
E)  Cells in the periphery of the buds come from deep layers of the oral epithelium. 
A)  Buds from the dental lamina project into deeper underlying connective tissue. 
B)  The bud stage is the first stage in the development of enamel organ. 
C)  Enamel organ will eventually form enamel and cementum of teeth. 
D)  Cells in the middle of the buds come from outer layers of oral epithelium. 
E)  Cells in the periphery of the buds come from deep layers of the oral epithelium.

Question 5

The appearance of the stratum intermedium differentiates the cap stage from the bell stage.The stratum epithelium,the fourth layer of epithelium,lies between the inner enamel epithelium and the outer enamel epithelium.

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

The cells of the outer enamel epithelium (OEE)are indirectly responsible for enamel formation because they elongate and become ameloblasts.

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 7

Cells of the outer enamel organ (OEE)constrict and morph into ameloblasts.Stellate reticulum,in conjunction with ameloblasts,is responsible for enamel formation.

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 8

The earliest signs of tooth development are seen during the 10th week in utero.

Accepted Answer

A) True 
 B)False

Question 9

MATCHING
An understanding of the formation of the dental lamina and enamel organ provides dental professionals with a foundation in embryology.Match each descriptive term with its appropriate anatomic formation.
-Dental lamina

Accepted Answer

A) Forms permanent incisors,canines,and premolars 
B) Forms cementum 
C) Forms enamel 
D) Forms mucobuccal fold 
E) Forerunner of primary tooth germ
F)Forms pulp 
A) Forms permanent incisors,canines,and premolars 
B) Forms cementum 
C) Forms enamel 
D) Forms mucobuccal fold 
E) Forerunner of primary tooth germ
F)Forms pulp

Exam 19: Dental Lamina and Enamel Organ

The dental papilla is first seen in the

The permanent molars develop from successional lamina.

The vestibular lamina forms in a lingual direction from the dental lamina.

Each of the following statements accurately describes aspects of the development of enamel organ EXCEPT one.Which one is the EXCEPTION?

The appearance of the stratum intermedium differentiates the cap stage from the bell stage.The stratum epithelium,the fourth layer of epithelium,lies between the inner enamel epithelium and the outer enamel epithelium.

The cells of the outer enamel epithelium (OEE)are indirectly responsible for enamel formation because they elongate and become ameloblasts.

Cells of the outer enamel organ (OEE)constrict and morph into ameloblasts.Stellate reticulum,in conjunction with ameloblasts,is responsible for enamel formation.

The earliest signs of tooth development are seen during the 10th week in utero.

MATCHING An understanding of the formation of the dental lamina and enamel organ provides dental professionals with a foundation in embryology.Match each descriptive term with its appropriate anatomic formation. -Dental lamina

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

Enamel, Dentin, and Pulp

Root Formation and Attachment Apparatus

Eruption and Shedding of Teeth

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

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