Question 1

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)  mesioclusion

Question 2

Which foods should be avoided by patients with fixed appliances?

Accepted Answer

A)  Chewing gum
B)  Sticky foods
C)  Popcorn
D)  All of the above

Question 3

What is the most common type of attachment for fixed appliances?

Accepted Answer

A)  Orthodontic band
B)  Bonded bracket
C)  Arch wire
D)  Separator

Question 4

Which statement is incorrect pertaining to dental assistant duties in an orthodontic practice?

Accepted Answer

A)  The dental assistant motivates and reinforces oral home care.
B)  The dental assistant makes a diagnosis.
C)  The dental assistant makes appliance adjustments.
D)  The dental assistant takes and fabricates diagnostic records.

Question 5

Which instrument is used in the placement of arch wires?

Accepted Answer

A)  Band seater
B)  Ligature director
C)  Bird-beak pliers
D)  Weingart utility plier

Question 6

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)  Opti-Flex

Question 7

Which instrument contours a bound around the tooth to allow for minimal exposed cement at the margins?

Accepted Answer

A)  Band seater
B)  Band pusher
C)  Bird-beak pliers
D)  Band-removing pliers

Question 8

What instrument is used to disengage wire ties when removing an arch wire?

Accepted Answer

A)  Ligature cutter
B)  Mosquito hemostat
C)  Explorer
D)  Howe pliers

Question 9

_____ separators are placed between contacts with a "sawing" or flossing motion.

Accepted Answer

A)  Brass wire
B)  Elastomeric
C)  Steel spring
D)  Wedge

Question 10

Which step is first in preparation for bonding the brackets to the teeth?

Accepted Answer

A)  Isolate using cotton rolls or retractors.
B)  Polish using a fluoride free paste.
C)  Etch, rinse, and dry.
D)  None of the above is correct.

Question 11

What is the purpose of the arch wire?

Accepted Answer

A)  It is a pattern that gives the dental arch its shape.
B)  It holds interarch elastics.
C)  It bonds directly to the teeth.
D)  It stabilizes the ends of a facebow.

Question 12

On which teeth are brackets most commonly bonded?

Accepted Answer

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

Question 13

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

Accepted Answer

A)  1- to 2
B)  2- to 3
C)  3- to 4
D)  4- to 5

Question 14

Which statement is incorrect about sticky candy and gum use during orthodontic treatment?

Accepted Answer

A)  It weakens cement beneath bands, causing bands to loosen.
B)  It loosens bands, pulls out ligature ties, and bends arch wires.
C)  It lodges between bands and beneath arch wires, causing irritation to gum tissues.
D)  It can increase the chance of carious lesions.

Question 15

Which radiograph is most commonly exposed on an orthodontic patient?

Accepted Answer

A)  FMX
B)  Panoramic
C)  Cephalometric
D)  Bite-wing

Question 16

In orthodontics,which radiograph is taken to study and make measurements of the skull and analyze growth patterns?

Accepted Answer

A)  Panoramic
B)  Cephalometric
C)  Bite-wing
D)  Occlusal

Question 17

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

Accepted Answer

A)  nickel titanium.
B)  stainless steel.
C)  beta titanium.
D)  Opti-Flex.

Question 18

An orthodontic tooth positioner is not used for which purpose?

Accepted Answer

A)  Retain teeth in position.
B)  Separate the teeth before banding.
C)  Massage tissue.
D)  Use prior to a retainer.

Question 19

Which of the following is incorrect about customized aligners?

Accepted Answer

A)  They consist of a series of aligners designed by computer technology.
B)  Each aligner is worn for about 2 weeks.
C)  They can be used for all types of orthodontic treatment.
D)  They are referred to as invisible braces.

Question 20

Before placement of _______,separators may be necessary.

Accepted Answer

A)  arch wires
B)  bands
C)  bonded brackets
D)  ligatures

Exam 60: Orthodontics

In orthodontics,which radiograph is taken to study and make measurements of the skull and analyze growth patterns?

Correct AnswerverifiedShow Answer

What instrument is used to disengage wire ties when removing an arch wire?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which foods should be avoided by patients with fixed appliances?

Correct AnswerverifiedShow Answer

What is the purpose of the arch wire?

Correct AnswerverifiedShow Answer

Before placement of _______,separators may be necessary.

Correct AnswerverifiedShow Answer

Which instrument contours a bound around the tooth to allow for minimal exposed cement at the margins?

Correct AnswerverifiedShow Answer

An orthodontic tooth positioner is not used for which purpose?

Correct AnswerverifiedShow Answer

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

_____ separators are placed between contacts with a "sawing" or flossing motion.

Correct AnswerverifiedShow Answer

Which radiograph is most commonly exposed on an orthodontic patient?

Correct AnswerverifiedShow Answer

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

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

What is the most common type of attachment for fixed appliances?

Correct AnswerverifiedShow Answer

Which instrument is used in the placement of arch wires?

Correct AnswerverifiedShow Answer

Which statement is incorrect about sticky candy and gum use during orthodontic treatment?

Correct AnswerverifiedShow Answer

Which step is first in preparation for bonding the brackets to the teeth?

Correct AnswerverifiedShow Answer

Which of the following is incorrect about customized aligners?

Correct AnswerverifiedShow Answer

Which statement is incorrect pertaining to dental assistant duties in an orthodontic practice?

Correct AnswerverifiedShow Answer

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