Question 1

An open bite refers to

Accepted Answer

A)  a diastema 
B)  open contact between the arches 
C)  an overjet 
D)  premature contact 
E)  a crossbite 
A)  a diastema 
B)  open contact between the arches 
C)  an overjet 
D)  premature contact 
E)  a crossbite

Question 2

Class II occlusion is called distoclusion because the distal surface of the mandibular canine is distal to the mesial surface of the maxillary canine.

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 3

Occlusion must be evaluated bilaterally.An individual might have a Class I on one side and a Class III on the other side.

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 4

Each of the following may be present in Class III occlusion EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)  Prognathic facial profile may be present. 
B)  The mandible may be retruded. 
C)  The mandible has a mesial relationship with the maxilla. 
D)  The incisal margins of the mandibular incisors may lie in front of the maxillary incisors. 
A)  Prognathic facial profile may be present. 
B)  The mandible may be retruded. 
C)  The mandible has a mesial relationship with the maxilla. 
D)  The incisal margins of the mandibular incisors may lie in front of the maxillary incisors.

Question 5

A position that allows the greatest interdigitation of teeth is referred to in each of the following EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)  Acquired centric occlusion 
B)  Centric relation 
C)  Habitual occlusion 
D)  Intercuspal position 
E)  Convenience occlusion 
A)  Acquired centric occlusion 
B)  Centric relation 
C)  Habitual occlusion 
D)  Intercuspal position 
E)  Convenience occlusion

Question 6

Each of the following is a possible manifestation of a Class III occlusion EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)  Mandibular teeth are positioned facial to maxillary teeth. 
B)  Incisal margins of mandibular incisors lie in front of the middle third of the lingual surface of the maxillary incisors. 
C)  The mandible is retruded. 
D)  The distal surface of the mandibular canine is mesial to the mesial surface of a maxillary canine by at least the width of a premolar. 
A)  Mandibular teeth are positioned facial to maxillary teeth. 
B)  Incisal margins of mandibular incisors lie in front of the middle third of the lingual surface of the maxillary incisors. 
C)  The mandible is retruded. 
D)  The distal surface of the mandibular canine is mesial to the mesial surface of a maxillary canine by at least the width of a premolar.

Question 7

Each of the following is true of centric occlusion EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)  It is determined by the way teeth fit together. 
B)  It is the jaw position that affords greatest interdigitation of teeth. 
C)  It is related to occlusion. 
D)  It is determined by both muscle and bone. 
A)  It is determined by the way teeth fit together. 
B)  It is the jaw position that affords greatest interdigitation of teeth. 
C)  It is related to occlusion. 
D)  It is determined by both muscle and bone.

Question 8

Class III occlusion is also known as mesioclusion because the mesiobuccal cusp of the mandibular first molar is mesial to the buccal groove of the maxillary first molar.

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

In Class I occlusion the mesiobuccal cusp of the maxillary first molar occludes with the buccal groove of the mandibular first molar.

Accepted Answer

A) True 
 B)False

Question 10

Tongue-thrusting can cause an overbite.

Accepted Answer

A) True 
 B)False

Exam 6: Occlusion

An open bite refers to

Class II occlusion is called distoclusion because the distal surface of the mandibular canine is distal to the mesial surface of the maxillary canine.

Occlusion must be evaluated bilaterally.An individual might have a Class I on one side and a Class III on the other side.

Each of the following may be present in Class III occlusion EXCEPT one.Which one is the EXCEPTION?

A position that allows the greatest interdigitation of teeth is referred to in each of the following EXCEPT one.Which one is the EXCEPTION?

Each of the following is a possible manifestation of a Class III occlusion EXCEPT one.Which one is the EXCEPTION?

Each of the following is true of centric occlusion EXCEPT one.Which one is the EXCEPTION?

Class III occlusion is also known as mesioclusion because the mesiobuccal cusp of the mandibular first molar is mesial to the buccal groove of the maxillary first molar.

In Class I occlusion the mesiobuccal cusp of the maxillary first molar occludes with the buccal groove of the mandibular first molar.

Tongue-thrusting can cause an overbite.

Oral Cavity

The Tooth: Functions and Terms

Fundamental and Preventive Curvatures

Dentition

Development, form, and Eruption

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

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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