ORTHODONTIC ASSISTANT FINAL EXAM ACTUAL EXAM 200
QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A+
Which non-nutritive habit may be a result in narrowing of the maxilla?
A. Tongue thrusting
B. Tongue thrust swallowing
C mouth breathing - ANSWER: C. mouth breathing
Which statement is incorrect regarding the cut ligature pigtail?
A. Tuck toward the gingival
B. Tuck toward the occlusal
C. Run a finger over them to check for comfort - ANSWER: B. Tuck toward the
occlusal.
Across by refers to which condition?
A. There are no posterities
B. There are spaces between teeth in the same Arch.
C. A tooth is not properly aligning with its opposing tooth - ANSWER: C. A tooth is
not properly aligning with its opposing tooth
Before placement of Orthodontic_________, separators may be necessary.
A. Arch wires
B. Bands
C. Bonded brackets - ANSWER: B. Bands
Which condition occurs when the mandible is located ahead of the maxilla?
A. Overbite
B. Underbite
C. Centric relation - ANSWER: B. underbite
Buckle archwire tubes are located on the bands that surround which of the following
teeth?
A. Maxillary first molar
B. Mandibular premolar
C. Maxillary central incisors - ANSWER: A. Maxillary first molar
What is the name for the stainless steel wires that hold the dental arch wires in
place?
, A. Ligature ties
B. Dental cement
C. Elastomeric ties - ANSWER: A. Ligature ties
Beyond the age of ____ years, thumb and finger sucking will affect the upper facial
structure and upper anterior teeth.
A. 2
B. 3
C.5 - ANSWER: C. 5
In ______ malocclusion, the mesiobuccal cusp of the maxillary permanent 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 molar.
A. Class one
B. Class two, division two
C. Class III - ANSWER: C. Class III
What is the purpose of an orthodontic positioner?
A. To move the teeth
B. To retain the teeth and their desired position
C. To reposition the teeth during orthodontic treatment - ANSWER: B. Retain the
teeth in their desired position
Which statement is incorrect about preparing a band for cementation?
A. Wipe attachments with wax or Chapstick
B. Place the band occlusal surface down on masking tape
C. Place the ban gingival surface down on masking tape - ANSWER: C. Place the band
gingival surface down on masking tape.
______ separators are placed between contacts with a "sawing" Or flossing motion.
A. Brass wire
B. Elastomeric
C steel spring - ANSWER: B. Elastomeric
Which type of arch wire is used to position the crown and root of the teeth during
the initial stages of treatment?
A. Round
B. Square
C. Rectangular - ANSWER: A. round
QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A+
Which non-nutritive habit may be a result in narrowing of the maxilla?
A. Tongue thrusting
B. Tongue thrust swallowing
C mouth breathing - ANSWER: C. mouth breathing
Which statement is incorrect regarding the cut ligature pigtail?
A. Tuck toward the gingival
B. Tuck toward the occlusal
C. Run a finger over them to check for comfort - ANSWER: B. Tuck toward the
occlusal.
Across by refers to which condition?
A. There are no posterities
B. There are spaces between teeth in the same Arch.
C. A tooth is not properly aligning with its opposing tooth - ANSWER: C. A tooth is
not properly aligning with its opposing tooth
Before placement of Orthodontic_________, separators may be necessary.
A. Arch wires
B. Bands
C. Bonded brackets - ANSWER: B. Bands
Which condition occurs when the mandible is located ahead of the maxilla?
A. Overbite
B. Underbite
C. Centric relation - ANSWER: B. underbite
Buckle archwire tubes are located on the bands that surround which of the following
teeth?
A. Maxillary first molar
B. Mandibular premolar
C. Maxillary central incisors - ANSWER: A. Maxillary first molar
What is the name for the stainless steel wires that hold the dental arch wires in
place?
, A. Ligature ties
B. Dental cement
C. Elastomeric ties - ANSWER: A. Ligature ties
Beyond the age of ____ years, thumb and finger sucking will affect the upper facial
structure and upper anterior teeth.
A. 2
B. 3
C.5 - ANSWER: C. 5
In ______ malocclusion, the mesiobuccal cusp of the maxillary permanent 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 molar.
A. Class one
B. Class two, division two
C. Class III - ANSWER: C. Class III
What is the purpose of an orthodontic positioner?
A. To move the teeth
B. To retain the teeth and their desired position
C. To reposition the teeth during orthodontic treatment - ANSWER: B. Retain the
teeth in their desired position
Which statement is incorrect about preparing a band for cementation?
A. Wipe attachments with wax or Chapstick
B. Place the band occlusal surface down on masking tape
C. Place the ban gingival surface down on masking tape - ANSWER: C. Place the band
gingival surface down on masking tape.
______ separators are placed between contacts with a "sawing" Or flossing motion.
A. Brass wire
B. Elastomeric
C steel spring - ANSWER: B. Elastomeric
Which type of arch wire is used to position the crown and root of the teeth during
the initial stages of treatment?
A. Round
B. Square
C. Rectangular - ANSWER: A. round
