Specialty Practice Test: Orthodontic Assisting

[Skip Breadcrumb Navigation]

Home

Chapter 6

This activity contains 80 questions.

Orthodontics is the dental specialty that deals with

	the diseases and abnormal conditions of the hard and soft tissues of the oral cavity.
	the treatment of pulpal and periapical diseases of the teeth.
	the growth and development of the jaws and face.
	the prevention and education of dental health problems on a community level.

The condition in which the mandible is located ahead of the maxilla is called

	prognathism.
	micrognathism.
	retrusion.
	centric relation.

The best way to motivate adolescents toward good oral hygiene habits is by

	establishing feelings of security.
	relating it to social acceptance and appearance.
	explaining monetary considerations.
	providing a detailed explanation on dental plaque.

Removal of bands may be accomplished with

	a band seater.
	an explorer.
	bird-beak pliers.
	anterior band slitting pliers.

A headgear appliance is worn

	during active play and while sleeping.
	as the orthodontist prescribes.
	a minimum of 8 hours per day, 5 days per week.
	24 hours per day except while eating.

A positioner is worn

	in place of a fixed appliance.
	for gross tooth movement.
	to separate the teeth before banding.
	after the removal of fixed appliances.

In placing TP springs, an important consideration is

	to place them from the lingual surface.
	to place them from the buccal surface.
	to place them above the contact area.
	to place them below the contour of the tooth and above the interdental papilla.

The instrument of choice in ligating an archwire is a

	How plier.
	separating plier.
	ligature-typing plier.
	utility plier.

Direct bracket bonding is advantageous because the procedure

	does not add to arch length.
	permits movement of teeth that will not accept bands.
	is much more esthetic than traditional cemented brackets.
	allows the dentist less clinical chair time.

The attachment either welded or soldered to the bands that secure the archwire is the

	bracket.
	separator.
	retainer.
	coil spring.

Brass separators are removed by

	brass separating pliers.
	cutting opposite the pigtail with ligature cutters.
	surgical scissors.
	a sickle scaler.

What instrument is used to place elastic separators?

	Mosquito hemostat
	Sickle-type scaler
	Elastic separating pliers
	Ligature pliers

The patient should be instructed to clean his or her retainer

	with an electric toothbrush.
	using hot water.
	with an immersion agent.
	after each meal.

Cephalometry is

	taking measurements of the skull.
	compression of the skull.
	the study of the soft tissues of the head.
	a technique of maintaining orthodontic movement.

Cephalometric tracings are made over

	silk screens.
	extraoral radiographs.
	articulating paper.
	special acetate paper.

The cephalometric headplate taken most often is the

	frontal headplate.
	posteroanterior.
	lateral skull headplate.
	cephalostat.

An open bite refers to a condition wherein

	there are no posterior teeth.
	there are spaces between teeth in the same arch.
	the anterior teeth do not contact.
	the teeth contact only during mastication.

Overjet is the

	horizontal distance between maxillary and mandibular teeth.
	coronal length of maxillary anterior teeth.
	vertical overlap of maxillary and mandibular anterior teeth.
	labioversion of the mandibular teeth.

A type of measuring device commonly used to take intraoral measurements is a (an)

	protractor.
	flexible millimeter ruler.
	Boone gauge.
	inch ruler.

When seating and sizing bands using a band pusher type of instrument, it is necessary to maintain control by

	using extraoral finger rests.
	holding the instrument with both hands.
	establishing a stable fulcrum before applying pressure.
	using the patient's chin as support.

Class III malocclusion is

	abnormal crowding of teeth with a normal jaw relationship.
	a protruded position of the mandible in relation to the maxilla.
	retruded position of the mandible in relation to maxilla.
	based on the relationship between maxillary and mandibular second molars.

Vertical overbite refers to the

	horizontal distance between the posterior teeth.
	coronal length of maxillary anterior teeth.
	vertical overlap of the incisal edges of maxillary and mandibular anterior teeth.
	labioversion of mandibular teeth.

Class II malocclusion is

	based on the relationship between maxillary and mandibular first bicuspid.
	a protruded position of the mandible in relation to the maxilla.
	also known as neutroclusion.
	retruded position of the mandible in relation to the maxilla.

The head-stabilizing device used in cephalometrics is called a (an)

	cephalostat.
	angle board.
	cassette.
	articulator.

During cementation of bands, the cement is placed

	on the brackets.
	on the tooth.
	on the outer surface of the band.
	on all surfaces within the band.

The attachment of anterior plastic brackets directly to teeth can be accomplished by

	zinc phosphate cementation.
	soldering.
	acid etch bonding.
	spot welding.

Cervical anchorage (headgear) is an

	appliance that exerts distal forces on maxillary teeth.
	intraoral appliance that constricts the mandible.
	intraoral appliance that moves teeth anteriorly.
	appliance that enlarges the palate.

After active orthodontic treatment is finished, what appliance is used to stabilize the teeth?

	Thin rubber bands
	A retainer
	A night guard
	Molar bands

When determining the length of a preformed archwire, you measure the distance from

	central to central.
	first premolar to first premolar.
	first molar to first molar.
	tuberosity to tuberosity.

In the removal of an archwire

	ligature ties, then the archwire, are removed one side at a time from the buccal tube.
	the separators and ligature ties are removed first.
	the archwire is removed, then the bands are removed.
	the anterior portion of the archwire is removed before the posterior archwire is removed.

The most common type of removable retainer is a

	headgear appliance.
	Hawley retainer.
	positioner.
	space maintainer.

What is used to tie the archwire onto orthodontic brackets?

	Separating wire
	Buccal tubes
	Ligature wire
	Finger springs

When removing separators, care must be taken to

	prevent the space from closing too quickly.
	avoid injuring the interdental papillae.
	avoid creating too much interdental space.
	avoid stripping the gingival sulcus.

A useful instrument for removing elastic separators is

	a gold knife.
	a sharp explorer.
	crown and collar scissors.
	a sickle scaler.

A TP spring is a type of

	separator.
	matrix holder.
	removable appliance.
	mouth prop.

An elastic separator is placed by

	snapping through the contacts.
	gently threading through the contacts with floss threaders.
	first removing the archwire.
	stretching and pushing through the contacts.

When placing an archwire, one should

	position the wire into brackets, then guide the wire carefully into the buccal tubes.
	use a three-pronged plier.
	insert the wire into one side of the buccal tubes, then guide it into the brackets.
	use the How pliers.

The importance of the ligature wire is that it

	provides tension for moving teeth.
	holds the archwire in place.
	holds brackets on bands.
	holds the headgear in place.

When ligating with a tie wire, the tie wire should be

	straight.
	bent at a 45-degree angle.
	bent at a 90-degree angle.
	applied with a separating plier.

Select the instrument used to check for loose bands.

	Band remover
	Bird-beak pliers
	How pliers
	Pin and ligature pliers

After cutting brass wire separators, the pigtails are cut to

	3-5 mm.
	1-2 mm.
	2-3 mm.
	the length of the archwire.

What instrument is used to cut ligature ties in the removal of an archwire?

	Pin and ligature cutters
	Mosquito forceps
	Explorer
	Band removing pliers

When placing headgear

	always ligate to molar tubes.
	insert one side of facebow first, then the other.
	pull facebow upward till it snaps into place.
	make sure inner bow is resting on top of lower lip.

The type of appliance that has cemented bands and lingual or labial archwires is referred to as

	a fixed appliance.
	a removable appliance.
	a Hawley appliance.
	a Crozat appliance.

If an orthodontic elastic separator has been swallowed or has disappeared, the assistant should

look for the elastic separator in the oral cavity.
call a physician.
inform the dentist if it is not located in the oral cavity.
do nothing-losing elastic is not important.

	1 and 2
	1 and 3
	2 and 3
	1, 2,and 3
	All of the above

To check for loose bands

use band remover pliers to see if cementation is complete.
look at the bands to see if one is higher or lower than the rest.
ask the patient if he or she has any loose bands.
use the How pliers in an occlusal and gingival direction to see if the band moves.

	1
	2, 3, and 4
	3
	4
	All of the above

Which of the following is (are) used to determine if an alginate impression tray is the correct size for the maxillary arch?

Tray must extend slightly mesial to the last molar.
Tray extends to cover the maxillary tuberosity.
Tray must extend slightly to the floor of the mouth.
Tray should fit well up into the periphery.

	1
	2, 3, and 4
	2 and 4
	3
	4

When inspecting and evaluating an alginate impression, the assistant must check for which of the following?

Surface detail
Proper extension over retromolar area and peripheral roll
Deficiencies in the peripheral impression
Final impression has a granular surface

	1, 2, 3
	1, 3
	2, 4
	4
	All of the above

The brass separating wire should NOT interfere with

occlusion.
gingival tissue.
chewing.
speech.

	1, 2, 3
	1, 3
	2, 4
	4
	All of the above

Which of the following is (are) the correct procedure(s) for mixing zinc phosphate cement for band seating?

Spatulate over a large area of slab
Mix to putty consistency
Use a cool slab
Incorporate large increments of powder into the mix

	1, 2, 3
	1, 3
	2, 4
	4
	All of the above

The information needed for the diagnosis and treatment planning of an orthodontic case includes

complete medical history.
radiographs and tracings.
study models.
photographs.

	1, 2, 3
	1, 3
	2, 4
	4
	All of the above

An important function of the dental assistant in an orthodontic practice is to

keep instruments well sharpened.
administer fluoride treatments.
chart existing restorations.
motivate and reinforce oral hygiene home care.

	1, 2, 3
	1, 3
	2, 4
	4

A finished Hawley retainer may have

an acrylic palate.
a labial wire.
arrow clasps.
a split palate.

	1, 2, 3
	1, 3
	2, 4
	4
	All of the above

Before cementation

brackets are waxed.
bands are arranged in cementation order.
teeth are isolated and dried.
teeth are coronal polished.

	1, 2, 3
	1, 3
	2, 4
	4
	All of the above

Orthodontic bands with metallic bracket attachments are designed to be

placed on occlusal surfaces of the teeth.
cemented on teeth to hold the cervical neck collar.
held in place by elastic and finger springs.
cemented on teeth as a means of anchoring archwires.

	1, 2, 3
	1, 3
	2, 4
	4
	All of the above

In reference to an orthodontic study cast model

trimmed models must be polished and labeled.
a model trimmer is used to establish right angles.
white orthodontic plaster is used.
wax bite is used to occlude models while trimming the heel.

	1, 2, 3
	1, 3
	2, 4
	4
	All of the above

If an archwire does not go in

check for a crushed bracket.
the molar band tube is blocked.
check width and diameter of archwire.
check the tongue.

	1, 2, 3
	1, 3
	2, 4
	4
	All of the above

In the placement and removal of elastic ligatures, which of the following instruments may be used?

Locking hemostat
Pigtail explorer
Scaler
Ligature-tying pliers

	1, 2, 3
	1, 3
	2, 4
	4
	All of the above

After removal of the orthodontic bands, all excess cement should be removed because

gingival irritation may occur.
teeth will not occlude properly.
teeth may appear discolored.
cement is irritating to the interproximal surfaces of teeth.

	1, 2, 3
	1, 3
	2, 4
	4
	All of the above

Identify the instrument shown in the figure above.

	Rubber dam clamp forceps
	Ligature-tying pliers
	Separating pliers
	Mosquito hemostat

Identify the orthodontic instrument shown in the figure above.

	Elastic separator
	Brass wire separator
	Coil spring
	TP spring

The orthodontic pliers shown in the figure above are designed primarily for

	removal of orthodontic bands.
	attachment of ortho brackets.
	removal of headgear.
	cementation of ortho bands.

Locate the orthodontic bracket in the figure above.

	1
	2
	3
	Not shown

Locate the orthodontic archwire in the figure above.

	1
	2
	3
	4

Locate the orthodontic tie wire in the figure above.

	1
	2
	3
	4

Locate the headgear tube in the figure above.

	1
	2
	3
	Not shown

Locate the orthodontic band in the figure above.

	1
	2
	3
	Not shown

The figure above indicates placement of a (an)

	positioner.
	elastic separator.
	elastic rubber band.
	separating wire.

In reference to the figure above, all of the following are true EXCEPT

	the high-pull headgear does not require a facebow.
	headgear appliances must not be worn during contact sports.
	the cervical neck band design is attached to the outer facebow by hooks.
	the number of hours the headgear is to be worn is determined by the doctor.

The primary function of the cervical facebow shown in the figure above is to

	stabilize an extraoral radiograph.
	serve as an anchor for the mandibular archwire.
	apply direct force to the maxillary molars and restrain maxillary anterior growth.
	apply direct force to the lower lip and mandibular arch.

Identify the orthodontic bands, band pusher, and ligature wire in the figure above.

	I, D, and A
	H, I, and F
	B, H, and D
	J, E, and H

Identify the band removing pliers, band seater, and scaler in the figure above.

	A, D, and I
	B, A, and F
	D, H, and C
	E, B, and J

On which surface(s) is the archwire located?

	Incisal surfaces only
	Labial surfaces only
	Lingual surfaces only
	Labial or lingual surface

One of the most important tasks of the assistant when attempting to support an anxious patient is to be

	efficient.
	calm and cool.
	patient-centered.
	strong.

A water irrigator is used

	to remove plaque.
	as a substitute for a toothbrush.
	to remove loose food debris.
	as a substitute for dental floss.

To be of maximum benefit to the teeth, the optimum fluoride concentration is

	10%.
	1 ppm.
	100 ppm.
	2 ppm.

Which of the following are considered detergent foods?

	Bananas
	Raisins
	Cheese
	Apples

Using the heel or toe of the brush is helpful for cleaning which tooth surfaces?

	Buccal surfaces of molars
	Lingual surfaces of molars
	Lingual surfaces of anterior teeth
	Facial surfaces of anterior teeth

According to the manufacturer, regular preventive maintenance for the model trimmer includes all of the following EXCEPT

	replace rag wheels.
	check water hoses for leaks.
	periodic replacement of abrasive grinding wheels.
	maintain model trimmer work platform plaster free.

Gypsum materials used for orthodontic procedures are best stored in a

	locked storage bin.
	airtight dry container.
	lead-lined open container.
	biohazard plastic container.

The Submit Answers for Grading feature requires scripting to function. Your browser either does not support scripting or you have turned scripting off.

So, the Submit Answers for Grading button below will not work.

The following Submit Answers for Grading button is provided in its place and will clear your answers:
The Clear Answers and Start Over feature requires scripting to function. Your browser either does not support scripting or you have turned scripting off.

So, the Clear Answers and Start Over button below will not work.

The following Clear Answers button is provided in its place and will clear your answers:

Specialty Practice Test: Orthodontic Assisting

Orthodontics is the dental specialty that deals with

The condition in which the mandible is located ahead of the maxilla is called

The best way to motivate adolescents toward good oral hygiene habits is by

Removal of bands may be accomplished with

A headgear appliance is worn

A positioner is worn

In placing TP springs, an important consideration is

The instrument of choice in ligating an archwire is a

Direct bracket bonding is advantageous because the procedure

The attachment either welded or soldered to the bands that secure the archwire is the

Brass separators are removed by

What instrument is used to place elastic separators?

The patient should be instructed to clean his or her retainer

Cephalometry is

Cephalometric tracings are made over

The cephalometric headplate taken most often is the

An open bite refers to a condition wherein

Overjet is the

A type of measuring device commonly used to take intraoral measurements is a (an)

When seating and sizing bands using a band pusher type of instrument, it is necessary to maintain control by

Class III malocclusion is

Vertical overbite refers to the

Class II malocclusion is

The head-stabilizing device used in cephalometrics is called a (an)

During cementation of bands, the cement is placed

The attachment of anterior plastic brackets directly to teeth can be accomplished by

Cervical anchorage (headgear) is an

After active orthodontic treatment is finished, what appliance is used to stabilize the teeth?

When determining the length of a preformed archwire, you measure the distance from

In the removal of an archwire

The most common type of removable retainer is a

What is used to tie the archwire onto orthodontic brackets?

When removing separators, care must be taken to

A useful instrument for removing elastic separators is

A TP spring is a type of

An elastic separator is placed by

When placing an archwire, one should

The importance of the ligature wire is that it

When ligating with a tie wire, the tie wire should be

Select the instrument used to check for loose bands.

After cutting brass wire separators, the pigtails are cut to

What instrument is used to cut ligature ties in the removal of an archwire?

When placing headgear

The type of appliance that has cemented bands and lingual or labial archwires is referred to as

The brass separating wire should NOT interfere with occlusion. gingival tissue. chewing. speech.

Which of the following is (are) the correct procedure(s) for mixing zinc phosphate cement for band seating? Spatulate over a large area of slab Mix to putty consistency Use a cool slab Incorporate large increments of powder into the mix

The information needed for the diagnosis and treatment planning of an orthodontic case includes complete medical history. radiographs and tracings. study models. photographs.

An important function of the dental assistant in an orthodontic practice is to keep instruments well sharpened. administer fluoride treatments. chart existing restorations. motivate and reinforce oral hygiene home care.

A finished Hawley retainer may have an acrylic palate. a labial wire. arrow clasps. a split palate.

Before cementation brackets are waxed. bands are arranged in cementation order. teeth are isolated and dried. teeth are coronal polished.

In reference to an orthodontic study cast model trimmed models must be polished and labeled. a model trimmer is used to establish right angles. white orthodontic plaster is used. wax bite is used to occlude models while trimming the heel.

If an archwire does not go in check for a crushed bracket. the molar band tube is blocked. check width and diameter of archwire. check the tongue.

In the placement and removal of elastic ligatures, which of the following instruments may be used? Locking hemostat Pigtail explorer Scaler Ligature-tying pliers

After removal of the orthodontic bands, all excess cement should be removed because gingival irritation may occur. teeth will not occlude properly. teeth may appear discolored. cement is irritating to the interproximal surfaces of teeth.

Identify the instrument shown in the figure above.

Identify the orthodontic instrument shown in the figure above.

The orthodontic pliers shown in the figure above are designed primarily for

Locate the orthodontic bracket in the figure above.

Locate the orthodontic archwire in the figure above.

Locate the orthodontic tie wire in the figure above.

Locate the headgear tube in the figure above.

Locate the orthodontic band in the figure above.

The figure above indicates placement of a (an)

In reference to the figure above, all of the following are true EXCEPT

The primary function of the cervical facebow shown in the figure above is to

Identify the orthodontic bands, band pusher, and ligature wire in the figure above.

Identify the band removing pliers, band seater, and scaler in the figure above.

On which surface(s) is the archwire located?

One of the most important tasks of the assistant when attempting to support an anxious patient is to be

A water irrigator is used

To be of maximum benefit to the teeth, the optimum fluoride concentration is

Which of the following are considered detergent foods?

Using the heel or toe of the brush is helpful for cleaning which tooth surfaces?

According to the manufacturer, regular preventive maintenance for the model trimmer includes all of the following EXCEPT

Gypsum materials used for orthodontic procedures are best stored in a

The brass separating wire should NOT interfere with

occlusion.
gingival tissue.
chewing.
speech.

Which of the following is (are) the correct procedure(s) for mixing zinc phosphate cement for band seating?

Spatulate over a large area of slab
Mix to putty consistency
Use a cool slab
Incorporate large increments of powder into the mix

The information needed for the diagnosis and treatment planning of an orthodontic case includes

complete medical history.
radiographs and tracings.
study models.
photographs.

An important function of the dental assistant in an orthodontic practice is to

keep instruments well sharpened.
administer fluoride treatments.
chart existing restorations.
motivate and reinforce oral hygiene home care.

A finished Hawley retainer may have

an acrylic palate.
a labial wire.
arrow clasps.
a split palate.

Before cementation

brackets are waxed.
bands are arranged in cementation order.
teeth are isolated and dried.
teeth are coronal polished.

In reference to an orthodontic study cast model

trimmed models must be polished and labeled.
a model trimmer is used to establish right angles.
white orthodontic plaster is used.
wax bite is used to occlude models while trimming the heel.

If an archwire does not go in

check for a crushed bracket.
the molar band tube is blocked.
check width and diameter of archwire.
check the tongue.

In the placement and removal of elastic ligatures, which of the following instruments may be used?

Locking hemostat
Pigtail explorer
Scaler
Ligature-tying pliers

After removal of the orthodontic bands, all excess cement should be removed because

gingival irritation may occur.
teeth will not occlude properly.
teeth may appear discolored.
cement is irritating to the interproximal surfaces of teeth.