ORTHODONTIC ASSISTANT FINAL EXAM ACTUAL EXAM 200
QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A+
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
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
QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A+
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
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
