Orthodontic Assistant Practice Exam Questions & Answers Rated 100% Correct!!
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
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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