Question 1

All incisors can erupt with mamelons.

Accepted Answer

A) True 
 B)False  True

Question 2

Each of the following statements correctly describes maxillary lateral incisors EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)  The incisal aspect can resemble that of a central incisor or a canine. 
B)  Incisally,they exhibit more convexity both labially and lingually than maxillary centrals. 
C)  Of all incisors,the maxillary laterals vary the least in form. 
D)  The mesial aspect of a maxillary lateral incisor is similar to that of a small central incisor. 
E)  Frequently maxillary lateral incisors are peg-shaped. 
A)  The incisal aspect can resemble that of a central incisor or a canine. 
B)  Incisally,they exhibit more convexity both labially and lingually than maxillary centrals. 
C)  Of all incisors,the maxillary laterals vary the least in form. 
D)  The mesial aspect of a maxillary lateral incisor is similar to that of a small central incisor. 
E)  Frequently maxillary lateral incisors are peg-shaped. C

Question 3

When incisors first erupt the incisal ridge is smooth.After teeth have been in function for several months,mamelons,which aid in mastication,develop on the incisal ridge.

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. D

Question 4

Each of the following is true of the permanent central incisor EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)  Evidence of calcification occurs at three months. 
B)  This is the widest mesiodistally of any of the anterior teeth. 
C)  Root formation is completed by six years of age. 
D)  Gemination is an anomaly that sometimes occurs. 
E)  Development is usually normal. 
A)  Evidence of calcification occurs at three months. 
B)  This is the widest mesiodistally of any of the anterior teeth. 
C)  Root formation is completed by six years of age. 
D)  Gemination is an anomaly that sometimes occurs. 
E)  Development is usually normal.

Question 5

Teeth most likely to be peg-shaped are the mandibular lateral incisors because the distal developmental lobe is large and located more lingually than its mesial lobe.

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 6

Which anatomical landmark could make an incisor more prone to dental caries?

Accepted Answer

A)  Cingulum 
B)  Lingual pit 
C)  Mamelons 
D)  Prominent marginal ridges 
A)  Cingulum 
B)  Lingual pit 
C)  Mamelons 
D)  Prominent marginal ridges

Question 7

In an anterior crossbite,the maxillary central incisors would exhibit wear in which location?

Accepted Answer

A)  Labioincisal edge 
B)  Linguloincisal edge 
C)  Cervical region 
D)  Apex 
A)  Labioincisal edge 
B)  Linguloincisal edge 
C)  Cervical region 
D)  Apex

Question 8

The mandibular central incisor occludes with both the maxillary central incisor and the maxillary lateral incisor.Similar to other anterior teeth,a mandibular incisor is derived from five lobes,three facial lobes and two lingual lobes.

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

The mandibular lateral incisors are wider mesiodistally than the mandibular central incisors because the mesial developmental lobe of the laterals is larger than that of the centrals.

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 10

Proximal grooves are commonly found on the roots of the maxillary incisors.

Accepted Answer

A) True 
 B)False

Question 11

All incisors have two marginal ridges,a cingulum,and a lingual fossa.The mandibular central incisor has the least distinct lingual anatomy.

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 12

Maxillary lateral incisors vary in form more than any other teeth in the mouth.

Accepted Answer

A) True 
 B)False

Question 13

The maxillary lateral incisor usually has a straight,thick,cylindrically shaped root.The root length of the maxillary lateral incisor is about 1.5 times the length of the crown.

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 14

Which incisor has a lingual pit?

Accepted Answer

A)  Maxillary central 
B)  Maxillary lateral 
C)  Mandibular central 
D)  Mandibular lateral 
A)  Maxillary central 
B)  Maxillary lateral 
C)  Mandibular central 
D)  Mandibular lateral

Question 15

Which incisor is not derived from four primary lobes?

Accepted Answer

A)  Maxillary central 
B)  Maxillary lateral 
C)  Mandibular central 
D)  Mandibular lateral 
E)  All of the above are derived from four lobes. 
A)  Maxillary central 
B)  Maxillary lateral 
C)  Mandibular central 
D)  Mandibular lateral 
E)  All of the above are derived from four lobes.

Question 16

Gemination is an anomaly that most commonly occurs in mandibular incisors.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following are characteristic of one or both maxillary incisors (Select all that apply. )?

Accepted Answer

A)  Slender roots 
B)  Linguoincisal attrition 
C)  Greater labiolingual than mesiodistal crown dimension 
D)  Most prominent teeth in the mouth 
A)  Slender roots 
B)  Linguoincisal attrition 
C)  Greater labiolingual than mesiodistal crown dimension 
D)  Most prominent teeth in the mouth

Question 18

Each mamelon forms the incisal edge of one of the primary labial lobes of the incisors.With wear,the rounded incisal edge becomes flat and is then referred to the incisal ridge.

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 19

Mandibular lateral incisors are distolingually inclined when viewed incisally.

Accepted Answer

A) True 
 B)False

Question 20

Mandibular incisors do not have marginal ridges.

Accepted Answer

A) True 
 B)False

Exam 12: Incisors

All incisors can erupt with mamelons.

Each of the following statements correctly describes maxillary lateral incisors EXCEPT one.Which one is the EXCEPTION?

When incisors first erupt the incisal ridge is smooth.After teeth have been in function for several months,mamelons,which aid in mastication,develop on the incisal ridge.

Each of the following is true of the permanent central incisor EXCEPT one.Which one is the EXCEPTION?

Teeth most likely to be peg-shaped are the mandibular lateral incisors because the distal developmental lobe is large and located more lingually than its mesial lobe.

Which anatomical landmark could make an incisor more prone to dental caries?

In an anterior crossbite,the maxillary central incisors would exhibit wear in which location?

The mandibular central incisor occludes with both the maxillary central incisor and the maxillary lateral incisor.Similar to other anterior teeth,a mandibular incisor is derived from five lobes,three facial lobes and two lingual lobes.

The mandibular lateral incisors are wider mesiodistally than the mandibular central incisors because the mesial developmental lobe of the laterals is larger than that of the centrals.

Proximal grooves are commonly found on the roots of the maxillary incisors.

All incisors have two marginal ridges,a cingulum,and a lingual fossa.The mandibular central incisor has the least distinct lingual anatomy.

Maxillary lateral incisors vary in form more than any other teeth in the mouth.

The maxillary lateral incisor usually has a straight,thick,cylindrically shaped root.The root length of the maxillary lateral incisor is about 1.5 times the length of the crown.

Which incisor has a lingual pit?

Which incisor is not derived from four primary lobes?

Gemination is an anomaly that most commonly occurs in mandibular incisors.

Which of the following are characteristic of one or both maxillary incisors (Select all that apply. )?

Each mamelon forms the incisal edge of one of the primary labial lobes of the incisors.With wear,the rounded incisal edge becomes flat and is then referred to the incisal ridge.

Mandibular lateral incisors are distolingually inclined when viewed incisally.

Mandibular incisors do not have marginal ridges.

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

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

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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