Question 1

Premolars are successional because they develop from a posterior growth of the dental,or general,lamina.

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.

Question 2

The stratum intermedium develops during which stage?

Accepted Answer

A)   Early bud
B)   Late bud
C)   Cap
D)   Bell

Question 3

The outermost part of the structure of the cap stage is the outer enamel epithelium (OEE) .This tissue,a continuation of the basal layer of oral epithelium,is composed of predominately pyramidal and conical-shaped cells.

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.

Question 4

Without thickening of the vestibular lamina in an occlusal direction the vestibule would not exist because clefting or splitting of the epithelium would not occur.

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.

Question 5

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.
-Enamel organ

Accepted Answer

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

Question 6

The dental lamina thickens first at the anterior midline.

Accepted Answer

A) True 
 B)False

Question 7

Enamel organ originates from the

Accepted Answer

A)   endoderm
B)   ectoderm
C)   mesoderm
D)   ameloblasts

Question 8

The clefting that occurs in the thickened vestibular lamina eventually becomes a mucogingival groove.The vestibular lamina is a thickening of oral epithelium in a lingual direction.

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. C

Question 9

The first stage of development of enamel organ is the cap stage.

Accepted Answer

A) True 
 B)False

Question 10

The cells between the dental papilla and the outer enamel epithelium (OEE) compose the stellate reticulum.Originating from deep layers of the oral epithelium,cells of the stellate reticulum are mesenchymal in origin.

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.

Question 11

At about the sixth embryonic week,there is a continued thickening in the dental lamina.These localized thickenings correspond to the positions of the 20 teeth of the future primary dentition.

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.

Question 12

The successional lamina forms all permanent teeth EXCEPT for one type.Which type is the EXCEPTION?

Accepted Answer

A)   Incisors
B)   Canines
C)   Premolars
D)   Molars

Question 13

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.
-Vestibular 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 germF) Forms pulp

Question 14

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 papilla

Accepted Answer

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

Question 15

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.
-Successional 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 germF) Forms pulp A

Question 16

The dental sac is composed of several layers of flat mesodermal cells that partially surround the dental papilla and enamel organ.The dental sac is another name for the dental lamina.

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.

Question 17

The cap stage begins when the concavity of the tooth buds becomes slightly concave.

Accepted Answer

A) True 
 B)False  True

Question 18

The cells of the inner enamel epithelium (IEE) are structurally similar to the cells of the outer enamel epithelium (OEE) because they both originate from the basal layer of the oral epithelium.

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.

Question 19

Skin,hair,enamel,and cementum can be adversely affected by ectodermal dysplasia because this condition causes poor development of structures arising from ectoderm.

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.

Question 20

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 sac

Accepted Answer

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

Exam 19: Dental Lamina and Enamel Organ

Premolars are successional because they develop from a posterior growth of the dental,or general,lamina.

Correct AnswerverifiedShow Answer

The stratum intermedium develops during which stage?

Correct AnswerverifiedShow Answer

The outermost part of the structure of the cap stage is the outer enamel epithelium (OEE) .This tissue,a continuation of the basal layer of oral epithelium,is composed of predominately pyramidal and conical-shaped cells.

Correct AnswerverifiedShow Answer

Without thickening of the vestibular lamina in an occlusal direction the vestibule would not exist because clefting or splitting of the epithelium would not occur.

Correct AnswerverifiedShow Answer

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. -Enamel organ

Correct AnswerverifiedShow Answer

The dental lamina thickens first at the anterior midline.

Correct AnswerverifiedShow Answer

Enamel organ originates from the

Correct AnswerverifiedShow Answer

The clefting that occurs in the thickened vestibular lamina eventually becomes a mucogingival groove.The vestibular lamina is a thickening of oral epithelium in a lingual direction.

Correct AnswerverifiedC

The first stage of development of enamel organ is the cap stage.

Correct AnswerverifiedShow Answer

The cells between the dental papilla and the outer enamel epithelium (OEE) compose the stellate reticulum.Originating from deep layers of the oral epithelium,cells of the stellate reticulum are mesenchymal in origin.

Correct AnswerverifiedShow Answer

At about the sixth embryonic week,there is a continued thickening in the dental lamina.These localized thickenings correspond to the positions of the 20 teeth of the future primary dentition.

Correct AnswerverifiedShow Answer

The successional lamina forms all permanent teeth EXCEPT for one type.Which type is the EXCEPTION?

Correct AnswerverifiedShow Answer

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. -Vestibular lamina

Correct AnswerverifiedShow Answer

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 papilla

Correct AnswerverifiedShow Answer

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. -Successional lamina

Correct AnswerverifiedA

The dental sac is composed of several layers of flat mesodermal cells that partially surround the dental papilla and enamel organ.The dental sac is another name for the dental lamina.

Correct AnswerverifiedShow Answer

The cap stage begins when the concavity of the tooth buds becomes slightly concave.

Correct AnswerverifiedTrue

The cells of the inner enamel epithelium (IEE) are structurally similar to the cells of the outer enamel epithelium (OEE) because they both originate from the basal layer of the oral epithelium.

Correct AnswerverifiedShow Answer

Skin,hair,enamel,and cementum can be adversely affected by ectodermal dysplasia because this condition causes poor development of structures arising from ectoderm.

Correct AnswerverifiedShow Answer

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 sac

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified