Orthodontic Assistant Practice Exam
Questions And Answers 2025 Update.
Orthodontics is the dental specialty that deals with - Answer✔the growth and development of
the jaws and face
The condition in which the mandible is located ahead of the maxilla is called -
Answer✔prognathism
The best way to motivate adolescents toward good oral hygiene habits is by - Answer✔relating
to social acceptance and appearance
Removal of bands may be accomplished with - Answer✔anterior band slitting pliers
A headgear appliance is worn - Answer✔as the orthodontist prescribes
A positioner is worn - Answer✔after the removal of fixed appliances
In placing TP springs, an important consideration is - Answer✔to place them from the lingual
surface
The instrument of choice in ligating an archwire is a - Answer✔ligature-tying pliers
Direct bracket bonding is advantage because the procedure - Answer✔allows the dentist less
clinical chair time
The attachment either welded or soldered to the bands that secure the archwire is the -
Answer✔bracket
Brass separators are removed by - Answer✔cutting opposite the pigtail with ligature cutters
What instrument is used to place elastic separators? - Answer✔Elastic separating pliers
The patient should be instructed to clean his or her retainer - Answer✔after each meal
Cephalometry is - Answer✔taking measurements of the skull
Cephalometric tracings are made over - Answer✔extraoral radiographs
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The cephalometric headplate taken most often is the - Answer✔lateral skull headplate
An open bite refers to a condition wherein - Answer✔the anterior teeth do not contact
Overjet is the - Answer✔horizontal distance between maxillary and mandibular teeth
A type of measuring device commonly used to take intraoral measurments is a (an) -
Answer✔flexible millimeter ruler
When seating and sizing bands using a band pusher type of instrument, it is necessary to
maintain control by - Answer✔establishing a stable fulcrum before applying pressure
Class III malocclusion is - Answer✔a protruded position of the mandible in relation to the
maxilla
Vertical overbite refers to the - Answer✔vertical overlap of the incisal edges of maxillary and
mandibular anterior teeth
Class II maloclussion is - Answer✔retruded position of the mandible in relation to the maxilla
The head-stabilizing device used in cephalometrics is called a (an) - Answer✔cephalostat
During cementation of bands, the cement is placed - Answer✔on all surfaces within the band
The attachment of anterior plastic brackets directly to teeth can be accomplished by -
Answer✔acid etch bonding
Cervical anchorage (headgear) is an - Answer✔appliance that exerts distal forces on maxillary
teeth
After active orthodontic treatment is finished , what appliance is used to stabilize the teeth? -
Answer✔A retainer
When determining the length of a preformed archwire, you measure the distance from -
Answer✔first molar to first molar
In the removal of an archwire - Answer✔ligature ties, then the archwire, are removed one side
at a time from the buccal tube
The most common type of removable retainer is a - Answer✔Hawley retainer
What is used to tie the archwire onto orthodontic brackets? - Answer✔Ligature wire
When removing separators, care must be taken to - Answer✔avoid injuring the interdental
papillae
A useful instrument for removing elastic separators is - Answer✔a sickle scaler
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