question

A non aerosol topical anesthetic may be applied by the:

answer

DA or RDA

question

Two primary reasons for using topical anesthetic agents are:

answer

relief of pain and anxiety

question

Topical anesthetic is applied in the muco/buccal fold over the apex area of operation for _____ anesthesia

answer

infiltration

question

A mobile tooth is a:

answer

Sign

question

Cracking at the corner of the mouth is known as:

answer

cheilitis

question

The tab of tissue on the inside of the cheek just opposite the upper first molar is:

answer

the opening to the parotid salivary gland

question

Removing tissue for examination under a microscope is called:

answer

biopsy

question

Before administering N20 to the patient:

answer

he is instructed to take several deep breaths

question

A patient's overjet is measured by:

answer

the horizontal distance the maxillary teeth protrude beyond the mandible.

question

A cross bite is:

answer

none of the above

question

A Class I malocclusion is:

answer

The posterior teeth and mandible are in a normal position but there are malpositioned anterior teeth.

question

A Class II malocclusion is:

answer

The posterior teeth and maxilla are in a protruded position in relationship to the mandible.

question

A Class III malocclusion is:

answer

The posterior teeth and maxilla are in a retruded position in relationship to the mandible.

question

A Class II elastic:

answer

attaches a the anterior of the maxillary appliance and the posterior of the mandibular appliance.

question

Elastic orthodontic separators are placed:

answer

by a DA

question

The following are not used for separators:

answer

Tie wires

question

When placing a TP spring:

answer

first insert lingual side

question

When removing separators care must be taken:

answer

to avoid injuring the interdental papillae

question

A useful instrument for removing elastic separators is a :

answer

sickle scaler

question

T-P springs are a type of:

answer

separator

question

How long do elastic separators need to be left in place?

answer

3-5 days

question

An elastic separator is placed by:

answer

a period of more than 8 hours

question

Headgear should not be worn during:

answer

sports activities

question

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

answer

bent at a 90 degree angle

question

After twisting the wire ligature the "pigtail" should be cut to a length of approximately:

answer

3 mm

question

After the wire ligature has been cut the cut end ("pigtail") is bent:

answer

gingivally

question

A removable retainer should:

answer

1. should not impinge soft tissue 2. seat completely to the soft tissue 3. fit securely without dislodging (1,2 and 3)

question

When placing head gear:

answer

place one side first then the other

question

What are the vital signs?

answer

- blood pressure and pulse - temperature - respiration

question

a mouth mirror is used for?

answer

- light reflection - retraction of soft tissues of the mouth

question

it is possible to obtain an incorrect blood pressure reading by?

answer

- using the wrong size cuff - placing the cuff too high on the arm - taking visual reading instead of listening to the sounds

question

A serviceable temporary filling should have the following characteristics?

answer

- sealed margins - appropriate contact points

question

A matrix band placed incorrectly can cause?

answer

- flat contours - overhang - tooth movement

question

A special type of retainer which can be pl;aced from the lingual is called:

answer

- contra angle retainer

question

what is not a type of cancer?

answer

leukoplakia

question

mercury levels in the office be controlled by:

answer

- storing scrap amalgam in a tightly sealed jar - keep all amalgam materials on an edged tray

question

a temp. crown should reproduce the following:

answer

- mesio-distal length - correct occlusal height - buccal-lingual width - contact points

question

the best way to reduce the gag reflex on a patient during an impression is to:

answer

- use adequate post dam - have the patient breath through their nose - use fast-set alginate

question

The purpose of pulp testing is to:

answer

- determine whether there are living nerves within the pulp - aid in diagnosis of pulpitis

question

Thermal sensitivity test may indicate that the pulp tissue is undergoing liquefaction and the reaction to applied heat is:

answer

increase pain

question

A pulp tester is used to help determine the:

answer

vitality of the dental pulp

question

The patient may be premeditated to alleviate his apprehension and raise his threshold of pain with a type of medication (a, an):

answer

sedative

question

A very low reading (0-1) on an electric vitality test indicates:

answer

acute inflammation

question

Vitality of an unexposed pulp may be determined by:

answer

- electrical pulp test - application of cold - application of heat (ALL OF THE ABOVE!)

question

The electrode on a vitalometer should be in contact with:

answer

enamel

question

Prior to pulp testing, the teeth should be:

answer

dried

question

The chemical symbol representing acidulated phosphate fluoride is:

answer

APF2 (it's 'supposed' to be a little "2" - but this daft program won't let me!!!)

question

The length of application for sodium fluoride applied topically is for:

answer

4 minutes

question

Following a topical fluoride application, what instruction are given to the patient?

answer

To avoid food and liquid during teh next 30 minutes

question

An undesirable result of using waxed dental floss before topical application of fluoride is:

answer

coating on the proximal surfaces

question

Mottled enamel is associated with:

answer

excessive amounts of fluoride in drinking water

question

The recommended concentration of fluoride in community water supplies is:

answer

1.0 ppm

question

Application of topical fluoride is a duty permitted by the:

answer

DA, direct supervision

question

Research has shown that the fluorides are most effective in:

answer

water

question

When removing excess cement, a know in dental floss may be used:

answer

through the interproximal only

question

Excess cement should be removed:

answer

after it has hardened

question

A Class II temporary cement filling:

answer

should be formed to tooth anatomy, having proximal contact and have sealed margins

question

The least irritating of the dental cements listed is:

answer

zinc-oxide-eugenol

question

Sizing and cementation of temporary crowns may be performed by:

answer

RDA under direct supervision

question

When cementing temporary crowns:

answer

the amount of cement placed in the temporary depends on the type of crown

question

The margin of a temporary crown should extend:

answer

1 mm below the free gingival

question

To decrease the setting time of zinc phosphate cement:

answer

the material is quickly incorporated

question

A Class II sedative restoration should:

answer

- be placed in a dry cavity - seal occlusal margins

question

A temporary sedative dressing is placed:

answer

- to protect the dentin and pulp - maintain contact and occlusion

question

The dentist is on vacation and a patient comes to the office, having displaced a temporary dressing. You may:

answer

appoint patient with another dentist immediately

question

Which one of the following instruments would be the instrument of choice to remove an excess of temporary dressings from the margins of the temporary restoration?

answer

explorer

question

An "ideal" temporary sedative dressing:

answer

- seals tooth - supports occlusal forces - reproduces tooth contours - prevents tooth movement

question

To prepare the mouth to place the rubber dam you should:

answer

- check contact areas of teeth to be isolated by passing dental floss through - check for alignment of teeth and missing teeth - determine which teeth are to be isolated - determine which tooth is to be the anchor tooth

question

A correctly applied rubber dam will:

answer

- increase the efficiency of the dental team - provide the driest operating field possible - provide soft tissue retraction - provide patient control

question

After removing the rubber dam, the next step is to:

answer

check rubber dam and see that it is intact

question

Which one of the following diagrams illustrate a rubber dam punched for the maxillary right quadrant?

answer

...

question

The preliminary diagnosis charting that the dental assistant performs includes:

answer

physical and dental data

question

Wharton's Duct is located:

answer

beneath the tongue

question

Blood in the soft tissue is known as:

answer

hematoma

question

An abnormal wearing away of tooth substance due to mechanical process affecting the crowns of teeth is indicative of:

answer

abrasion

question

Instrumentation for a mouth mirror inspection is:

answer

mouth mirror, explorer and probe

question

A progressive lesion of calcified dental tissue characterized by loss of teeth structure is:

answer

caries

question

What is the appearance of granulation tissue?

answer

white

question

The first step in completing a patient record is:

answer

patient history

question

All of the following are performed during an oral inspection EXCEPT:

answer

determining sequence of dental needs

question

Injury of the tissues of the body is the result of:

answer

Trauma

question

Of those duties listed below, which cannot be performed by the DA under the direct supervision of the Dentist?

answer

mouth mirror inspection of the oral cavity

question

The classification of caries on the occlusal two-thirds of a distal surface is:

answer

Class II

question

A Class II restoration includes the following surfaces:

answer

- mesial - distal - occlusal

question

General appraisal of your patient during visual observation would include:

answer

- obesity - perspiration

question

Bite wing x-rays are used by the dentist to diagnose:

answer

- interproximal caries

question

A good impression should include:

answer

- palate - frenum - reflex areas - tuberosities

question

In order to correctly seat a lower alginate impression you should have your patient:

answer

raise their tongue after placement

question

A granular alginate impression mix may be caused by:

answer

improper water powder ratio

question

Which of the following blood pressure readings would be cause for the GREATEST concern:

answer

150/100

question

You are in the operatory with your patient alone. The patient was given an injection of local anesthesia for a short operative procedure. You notice that the patient has broken out in a rash and says their skin itches. What might be wrong?

answer

anaphylactic shock

question

In reference to the question #91: What would be the BEST course of action to follow?

answer

inform the dentist and call a paramedic

question

Your patient seems more nervous than usual during dental treatment, in the middle of the procedure they complain of a severe pain in their lower jaw. This patient has a history of diabetes and heart problems. What might be wrong?

answer

angina pectoris attack

question

The appropriate treatment for a patient suffering from an asthma attack would include all of the following EXCEPT:

answer

have the patient breathe into a bag

question

Which of the following may indicate overexposure to radiation?

answer

- nausea and vomiting - skin rash - loss of hair

question

In checking the nitrous oxide/oxygen tanks prior to seeing a patient the assistant notices the tank gauge reads 200 psi. This reading would indicate the:

answer

tank pressure has decreased from full state

question

The last procedure that should be performed just prior to cementation of a temporary crown is:

answer

festoon the contact area

question

The least irritating cement to use with a temporary crown is:

answer

zinc oxide

question

Which of the following medications might be taken by a patient who has suffered a stroke?

answer

anticoagulants

question

Which of the following might be signs of a patient in too deep sedation with nitrous oxide?

answer

nausea

question

The main nutrients found in fruits and vegetables are:

answer

vitamin A, C, iron and riboflavin

question

An excellent source of vitamin A is :

answer

liver

question

Symptoms of vitamin C deficiency are:

answer

bruise easily

question

A patient has just experienced syncope after an injection. What treatment could a dental assistant administer?

answer

place patient in reclining position with their head lower than their feet

question

The orthodontic facebow should be placed:

answer

one side at a time

question

Acetone or fruity smelling breath, deep respirations, excessive thirst are symptoms of:

answer

diabetic acidosis

question

If the patients condition were to progress to complete circulatory collapse, the RDA would immediately administer which of the following?

answer

cardiopulmonary resuscitation

question

The symptoms described in the above situation would indicate that teh patient is suffering from:

answer

heart attack

question

In the above situation the INITIAL procedure would be to:

answer

place patient in semi supine position & administer oxygen

question

Orthodontic retainer instructions should include:

answer

- brushing of the retainer, teeth, soft tissue - removal of retainer during sports

question

What instructions should be given to a patient following an arch wire ligation procedure?

answer

- oral hygiene instruction - foods to avoid - warning of possible discomfort

question

To insure that all excess cement has been removed which of the following techniques should be used after cementing a gold restoration?

answer

- exploration of the marginal & interproximal area with explorer - inspection of the oral cavity with a clear mouth mirror with good illumination

question

The RDA is legally responsible for:

answer

no entries in the chart for services performed

question

Which of the following abrasives should be chosen for coronal polishing when the patients teeth display mild sensitivity?

answer

flour of pumice

question

The complete health history of a patient should include:

answer

- blood pressure reading - record of chronic illnesses - chief dental complaints - prescription and self prescribed drugs - history of exposure to ionizing radiation - past sensitivity to medications

question

A properly adapted impression tray should include:

answer

- the retromolar area - all teeth - tissues in the vestibule - frenum or muscle attachments

question

When utilizing correct four-handed dentistry techniques, how should the dental Assistant receive a cutting instrument?

answer

extended little finger

question

Once inserted, where are metal spring separators located in relation to the contact area?

answer

occlusal and gingival to the contact area

question

Indicate the correct sequence of steps for placing a PREFORMED aluminum temporary crown?

answer

- measure mediodistal space at the contact area and select the crown - try the crown and check the fit - adjust the length of the crown - adjust occlusion - cement temporary crown

question

The dentist has just completed periodontal surgery in the lower right quadrant and has extracted tooth #32, which was impacted. The RDA may:

answer

place a periodontal dressing over the periodontal wound area

question

A rubber dam is used for all of the following EXCEPT to:

answer

stabilize loose teeth

question

Which of the statements are TRUE concerning the proper placement of a rubber dam clamp?

answer

- stabilize dam around teeth - retract the dam and tissues

question

How should a rubber dam be removed from interproximal spaces?

answer

clip interseptal rubber with scissors

question

After checking the developer solution for proper temperature, the manufacturers directions for the time and temperature, and the proper functioning of the timer, the probable cause for light radiographic film would be:

answer

weakened solution

question

While examining the nitrous oxide/oxegyn tanks, the Registered Dental Assistant notices that the oxegyn pressure gauge registers 15 psi. This is a sign that:

answer

the pressure of the oxygen gas has decreased from the normally full state

question

What can be done to prevent the suture material from sticking to the periodontal dressing?

answer

wipe petroleum jelly on the suture material after suture is placed

question

The dentist asks the RDA to present some positive suggestions at the next weekly staff meeting to reduce the effect of environmental pollutants in the operatories. The RDA brought to the meeting the items or suggestions listed (on the flip-side). Match them to the question? - Escaping nitrous oxide gases

answer

scavenging system for gases

question

Mercury fumes

answer

oil-covered containers for amalgam scrap

question

Inhalant particles produced during removal of old restorations

answer

an efficient evacuation system and the use of masks by the dental team

question

Pumice and polishing agents

answer

flushing and aspirating devices

question

Which of the following is characteristic of chronic inflammation of gingival tissue?

answer

soft spongy consistency, bleeding readily

question

Instructions to a patient with a dry socket include:

answer

- application of cold every 30 minutes (off and on) - reminding patient to take prescribed antibiotics - reminding patient to take prescribed analgesics - rinsing with warm saline solution

question

Constricted pupils suggest that the patient is:

answer

under the influence of narcotics

question

Current research on nitrous oxide administration would lead one to believe that:

answer

- routine inhalation of exhaust gases may produce negative results in males and females - females in the first trimester of pregnancy are at risk - offices should have gas removal equipment

question

Immediately following the surgical removal and suturing of an impacted mandibular third molar, the RDA is requested to place a surgical sedative dressing over the wound . Which of the following should be done?

answer

cover the wound with a thin layer of zinc oxide eugenol

question

When placing a tofflemire matrix retainer, it is important that the slotted edge of the retainer is directed:

answer

gingivally

question

What is the FIRST sign of gingival over-extension when placing a temporary crown?

answer

blanching (tissue white)

question

When used in orthodontic treatment, a positioner is:

answer

an elastic type retainer worn following removal of appliance

question

How should the patient be advised to wear headgear?

answer

insert one side first, then insert the other

question

Cavity varnish should be applied....

answer

with a cotton pellet

question

In drying the root canal with an absorbent paper point, how is the proper length of the point determined?

answer

by use of an x-ray film measurement

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