Question 1

An open bite refers to a condition wherein:

Accepted Answer

A)  there are no posterior teeth.
B)  there are spaces between teeth in the same arch.
C)  maxillary and mandibular teeth do not touch.
D)  the teeth contact only during mastication.E) A) and B)
F) None of the above

Question 2

When taking photographs,the full direct view includes the:

Accepted Answer

A)  extraoral frontal view, with the lips in a relaxed position.
B)  intraoral view, with all teeth in occlusion.
C)  extraoral profile view of the patient's right side, with the lips in a relaxed position.
D)  intraoral right buccal view, with the distal of the canine to the distal of the last molar.E) A) and B)
F) B) and D)

Question 3

Preparing bands for cementation includes all of the following except:

Accepted Answer

A)  wiping attachments with wax or Chapstick.
B)  placing the band occlusal surface down on masking tape.
C)  placing the band gingival surface down on masking tape.
D)  fill the entire inner surface with cement.E) B) and C)
F) A) and D)

Question 4

The arch wire that is used as a "working arch wire" is:

Accepted Answer

A)  nickel titanium.
B)  stainless steel.
C)  beta titanium.
D)  optiflex.E) B) and C)
F) C) and D)

Question 5

Elastic separators can be left in the mouth for ____ days,and steel can be left in the mouth for _____ days.

Accepted Answer

A)  7; 7
B)  14; 5
C)  5; 14
D)  14; 14E) C) and D)
F) All of the above

Question 6

Elastic ligature ties should be removed using:

Accepted Answer

A)  bird beak pliers.
B)  a spoon excavator.
C)  a hemostat.
D)  an orthodontic scaler.E) A) and D)
F) None of the above

Question 7

_____ are attached to hooks or buttons that are secured on the band or brackets.

Accepted Answer

A)  Springs
B)  Tooth positioners
C)  Elastic separators
D)  ElasticsE) A) and B)
F) B) and C)

Question 8

Wire ligatures should be twisted and cut leaving a _____ mm pigtail.

Accepted Answer

A)  1-2
B)  2-3
C)  3-4
D)  4-5E) A) and D)
F) None of the above

Question 9

An advantage of using the patient's model to select bands is that:

Accepted Answer

A)  the patient doesn't need to be present.
B)  it is more accurate.
C)  neither are advantages.
D)  both are advantages.E) A) and C)
F) None of the above

Question 10

The function of the _____ is to apply force to either move the teeth or hold them in the desired positions.

Accepted Answer

A)  buccal tubes
B)  bracket
C)  arch wire
D)  none of the aboveE) A) and C)
F) B) and D)

Question 11

What is used to place elastic separators?

Accepted Answer

A)  Hemostat
B)  Dental floss
C)  Elastic separating pliers
D)  Either b or cE) B) and C)
F) A) and B)

Question 12

Arch wires that are made of _____ are useful in early stages of treatment because they are flexible.

Accepted Answer

A)  nickel titanium
B)  stainless steel
C)  beta titanium
D)  optiflexE) A) and D)
F) None of the above

Question 13

Orthodontic fixed appliances are also known as:

Accepted Answer

A)  braces.
B)  separators.
C)  Hawley retainers.
D)  clear "aligners."E) A) and D)
F) B) and C)

Question 14

Class II occlusion _____.

Accepted Answer

A)  is normal occlusion
B)  is mesioclusion
C)  occurs when the mesiobuccal cusp of the maxillary first molar occludes in the interdental space between the mandibular second premolar and the mesial cusp of the mandibular first molar
D)  occurs when the mesiobuccal cusp of the maxillary first molar occludes in the interdental space between the distal cusp of the mandibular first permanent molar and the mesial cusp of the mandibular second permanent molarE) A) and D)
F) A) and C)

Question 15

In ______,the mesiobuccal cusp of the maxillary permanent first molar occludes in the interdental space between the distal cusp of the mandibular first second premolar.

Accepted Answer

A)  distoclusion
B)  labioversion
C)  linguoversion
D)  mesioclusionE) All of the above
F) None of the above

Question 16

Which is not true of customized aligners?

Accepted Answer

A)  They consist of a series of aligners designed by computer technology.
B)  Each aligner is worn for about two weeks.
C)  They can be used for all types of orthodontic treatment.
D)  They are referred to as invisible braces.E) A) and D)
F) None of the above

Question 17

During the frontal evaluation of facial esthetics,the face is examined:

Accepted Answer

A)  to determine whether the jaws are proportionately positioned.
B)  to evaluate lip protrusion.
C)  for bilateral symmetry.
D)  to evaluate the vertical facial proportions and the mandibular angle.E) B) and C)
F) A) and B)

Question 18

On which teeth are brackets most commonly bonded?

Accepted Answer

A)  Anterior teeth
B)  Premolars
C)  Molars
D)  Both a and bE) C) and D)
F) B) and C)

Question 19

Which is NOT a function of the dental assistant in an orthodontic practice?

Accepted Answer

A)  To motivate and reinforce oral home care
B)  To make a diagnosis
C)  To make appliance adjustments
D)  To take and fabricate diagnostic recordsE) C) and D)
F) A) and B)

Question 20

An orthodontic tooth positioner is not used:

Accepted Answer

A)  to retain teeth in position.
B)  to separate the teeth before banding.
C)  to massage tissue.
D)  prior to a retainer.E) A) and C)
F) A) and B)

Exam 60: Orthodontics

Arch wires that are made of _____ are useful in early stages of treatment because they are flexible.

Correct AnswerverifiedShow Answer

On which teeth are brackets most commonly bonded?

Correct AnswerverifiedShow Answer

In ______,the mesiobuccal cusp of the maxillary permanent first molar occludes in the interdental space between the distal cusp of the mandibular first second premolar.

Correct AnswerverifiedShow Answer

Which is not true of customized aligners?

Correct AnswerverifiedShow Answer

When taking photographs,the full direct view includes the:

Correct AnswerverifiedShow Answer

Orthodontic fixed appliances are also known as:

Correct AnswerverifiedShow Answer

Which is NOT a function of the dental assistant in an orthodontic practice?

Correct AnswerverifiedShow Answer

_____ are attached to hooks or buttons that are secured on the band or brackets.

Correct AnswerverifiedShow Answer

The arch wire that is used as a "working arch wire" is:

Correct AnswerverifiedShow Answer

Elastic separators can be left in the mouth for ____ days,and steel can be left in the mouth for _____ days.

Correct AnswerverifiedShow Answer

What is used to place elastic separators?

Correct AnswerverifiedShow Answer

Preparing bands for cementation includes all of the following except:

Correct AnswerverifiedShow Answer

Elastic ligature ties should be removed using:

Correct AnswerverifiedShow Answer

An orthodontic tooth positioner is not used:

Correct AnswerverifiedShow Answer

The function of the _____ is to apply force to either move the teeth or hold them in the desired positions.

Correct AnswerverifiedShow Answer

Class II occlusion _____.

Correct AnswerverifiedShow Answer

An open bite refers to a condition wherein:

Correct AnswerverifiedShow Answer

During the frontal evaluation of facial esthetics,the face is examined:

Correct AnswerverifiedShow Answer

An advantage of using the patient's model to select bands is that:

Correct AnswerverifiedShow Answer

Wire ligatures should be twisted and cut leaving a _____ mm pigtail.

Correct AnswerverifiedShow Answer

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Elastic separators can be left in the mouth for days,and steel can be left in the mouth for _ days.

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