DEN190 Final

Question 1

What solution is used when using a steam autoclave?

a. Chemical Vapor solution
b. Alcohol
c. Distilled water
d. Enzyme cleaner

Answer 1

c. Distilled water

Question 2

What controls the speed of the handpieces?

a. Rheostat
b. Chair controls
c. Ultrasonic scaler
d. Dental unit

Answer 2

a. Rheostat

Question 3

You are assisting your dentist with a filling. Which instrument would you pass for the removal of decay and soft dentin?

a. Explorer
b. Spoon excavator
c. Periodontal probe
d. Amalgam carrier

Answer 3

b. Spoon excavator

Question 4

You are doing a Root canal and an endo file is dropped in their mouth, what should have been placed to prevent the aspiration of the endo file?

a. Cotton rolls
b. Isolite system
c. Dental dam
d. Dri-angle

Answer 4

c. Dental dam

Question 5

What is the proper way to pass an anesthetic syringe?

a. Behind the head
b. Below the patient’s chin
c. Across the face
d. Either below the chin or behind the head

Answer 5

d. Either below the chin or behind the head

Question 5

What piece of equipment is used when fabricating a tooth-whitening tray?

a. Dental lathe
b. Laboratory bur
c. Vacuum former
d. Model trimmer

Answer 5

c. Vacuum former

Question 6

When setting up the anesthetic syringe, what must be retracted prior to placing the cartridge?

a. Syringe barrel
b. Piston rod
c. Thumb ring
d. Plunger

Answer 6

b. Piston rod

Question 6

List the steps in-order for a simple extraction:

a. Anesthetic, suture, pass forceps, pack gauze
b. Pack gauze, anesthetic, pass forceps, suture
c. Anesthetic, pass elevators, pass forceps, pack gauze
d. Suture, pass forceps, anesthetic, pack gauze

Answer 6

c. Anesthetic, pass elevators, pass forceps, pack gauze

Question 7

If you are applying topical anesthetic for a restorative procedure on #13, which answer best describes the proper placement location?

a. Directly above #13 in the mucobuccal fold
b. On the buccal surface of #13
c. On the lingual surface of #13
d. Near the retromolar pad

Answer 7

a. Directly above #13 in the mucobuccal fold

Question 8

List the proper steps for fluoride varnish application:

a. Apply varnish, dry teeth evenly dispense, post treatment instructions
b. Apply varnish, evenly dispense, rinse, post treatment instructions
c. Dry teeth, evenly dispense, apply varnish, rinse
d. Dry teeth, apply varnish, evenly dispense, air dry, isolate for 1 minute, post-op instructions

Answer 8

d. Dry teeth, apply varnish, evenly dispense, air dry, isolate for 1 minute, post-op instructions

Question 9

When doing an amalgam filling what instrument will the dentist need to carve the interproximal surface area?

a. Amalgam carrier
b. Hollenback carver
c. Burnisher
d. Cleoid-Discoid carver

Answer 9

b. Hollenback carver

Question 10

After you polish and isolate for a dental sealant, what would the next step be?

a. Apply bonding agent
b. Apply acid etchant
c. Apply sealant resin
d. Apply amalgam

Answer 10

b. Apply acid etchant

Question 11

When you are giving post instructions after you have placed an Amalgam filling which is NOT a post procedure instruction?

a. You may be numb for a few hours
b. Avoid chewing in that area for several hours
c. Your restoration is completely set
d. New restorations are often temperature sensitive

Answer 11

c. Your restoration is completely set

Question 11

When you are polishing a removable appliance, what type of pressure should be applied?

a. Moderate
b. Slight
c. Heavy
d. Resistance

Answer 11

b. Slight

Question 12

After the maxillary and mandibular casts are trimmed and in occlusion, the overall height should be:

a. 3 inches
b. 2 inches
c. 4 inches
d. 1 inch

Answer 12

a. 3 inches

Question 12

What should you do before the removal of cotton rolls?

a. Leave cotton rolls in for 10 minutes
b. Chart procedure
c. Review post-operative instructions
d. Moisten with water

Answer 12

d. Moisten with water

Question 13

Before placing topical anesthetic, the tissue is:

a. Kept moist
b. Treated with alcohol
c. Dried with a 2x2 gauze
d. Covered

Answer 13

c. Dried with a 2x2 gauze

Question 14

What would be a concern when applying pressure during a coronal polish?

a. Cools the tooth
b. Minimizes friction
c. Wears away enamel
d. Misses stain

Answer 14

c. Wears away enamel

Question 15

How would an ultra-sonic cleaner be maintained?

a. Drain weekly, rinse, refill start of week
b. Drain monthly, rinse, refill at the start of month
c. Drain nightly, rinse, refill each morning
d. Minimizes friction

Answer 15

c. Drain nightly, rinse, refill each morning

Question 16

When a dental assistant is trimming models for tooth-whitening trays:

a. The models are to be trimmed in a horseshoe shape
b. The models should have 3 inch base
c. The models need no trimming
d. None of the above

Answer 16

a. The models are to be trimmed in a horseshoe shape

Question 16

When cutting a cavity preparation, which type of handpiece uses a friction grip bur?

a. Slow- speed handpiece
b. Slow-speed handpiece with a straight attachment
c. High-speed handpiece
d. Slow speed handpiece with a contra angle attachment

Answer 16

c. High-speed handpiece

Question 17

What device would you use to view the intraoral conditions of the mouth?

a. Dental laser
b. View-box
c. Intraoral camera
d. Curing light

Answer 17

c. Intraoral camera

Question 18

After you have completed the final crown and bridge impression, what step records the patient’s occlusion?

a. Digital imaging
b. Bite registration
c. Gingival retraction
d. Articulating paper

Answer 18

b. Bite registration

Question 19

Which type of handpiece would be used with a disposable prophy angle?

a. Slow-speed motor with a straight attachment
b. Medium speed prophy angle handpiece
c. Slow speed motor with a contra-angle attachment
d. High speed handpiece

Answer 19

a. Slow-speed motor with a straight attachment

Question 19

What is the recommendation for avoiding alveolitis? a. Avoid smoking b. Rinse vigorously immediately following extraction c. Avoid drinking through a straw d. Avoid both drinking through a straw and smoking

Answer 19

d. Avoid both drinking through a straw and smoking

Question 20

What type of grasp is used for instruments that have angled shanks? a. Palm b. Reverse palm thumb c. palm-thumb d. Pen

Answer 20

d. Pen

Question 20

When you are hand-mixing alginate, which is the best technique? a. No blending is necessary b. Use a shaker to blend alginate c. Press the spatula to the side of the bowl while rotating the bowl d. Stir alginate with a tongue depressor

Answer 20

c. Press the spatula to the side of the bowl while rotating the bowl

Question 21

What product is typically used to polish removable appliances? a. Pumice b. Polishing paste c. Rouge d. Tripoli

Answer 21

a. Pumice

Question 22

When placing a composite filling, which dental material is applied first after the cavity has been prepped? a. Bonding agent b. Acid etchant c. Flowable composite d. Desensitizer

Answer 22

d. Desensitizer

Question 23

What would be the main purpose of packing retraction cord? a. Temporarily displaces tissue to expose margin b. Controls bleeding around the crown prep c. Permanently displaces tissue to expose margin d. Provides infection control around the prep

Answer 23

a. Temporarily displaces tissue to expose margin

Question 24

What type of curing light produces a high intensity light that does not generate excessive heat: a. Plasma Arc b. Tungsten halogen c. Argon laser d. LED

Answer 24

c. Argon laser

Question 25

When taking an Alginate impression, what is placed in the bowl first? a. Water b. Alginate powder c. Either water or powder may be placed first d. Water is not required to mix alginate

Answer 25

b. Alginate powder

Question 25

Why would the mouthguard material be allowed to droop before activation of the vacuum former switch? a. Prevents moisture between the model and the mouth guard material. b. Keeps the model centered c. Prevents overheating of vacuum former d. Allows for better detail on appliance

Answer 25

d. Allows for better detail on appliance

Question 26

Identify the correct number of the Cowhorn forcep and indicate the types of teeth it is used to extract: a. 150; Maxillary 1st and 2nd molars b. 23; 1st and 2nd Mandibular molars c. 31; Maxillary 3rd molars d. 151; Mandibular 1st and 2nd molars

Answer 26

b. 23; 1st and 2nd Mandibular molars

Question 27

When the Dental Assistant is passing an instrument to treat #2, The working end is: a. Rotated toward the palatal b. Rotated toward the lingual c. Rotated toward the maxillary arch d. Rotated toward the mandibular arch

Answer 27

c. Rotated toward the maxillary arch

Question 28

Which of the items below require light curing after it is applied? a. Acid etchant only b. Acid etchant, prime and bond c. Desensitizer, acid etchant, prime and bond d. Prime and bond only

Answer 28

d. Prime and bond only

Question 29

Accurate study models display which of the Following: a. Symmetrical trimming with defined angles, and anatomic portions are accurate. b. Anatomy portions are accurate c. Maxillary and Mandibular models are trimmed to a point d. Symmetrical trimming with specified angles

Answer 29

a. Symmetrical trimming with defined angles, and anatomic portions are accurate.

Question 30

Before a dental sealant is placed what is used to polish the teeth? a. Etchant b. Fluoride prophy paste c. Non-fluoride prophy paste d. Bonding agents

Answer 30

c. Non-fluoride prophy paste

Question 31

Which of the following Accurately describes the strokes for coronal polish? a. Long, intermittent, overlapping b. Short, constant, overlapping c. Short, intermittent, overlapping d. Long, constant, overlapping

Answer 31

c. Short, intermittent, overlapping

Question 31

For a routine extraction what instrument would you pass to separate the epithelial attachments from around the tooth? a. Bone file b. Surgical curette c. Periosteal elevator d. Scalpel

Answer 31

c. Periosteal elevator

Question 32

What would be the post treatment instructions after the application of fluoride varnish: a. Rinse immediately with water after placement b. Brush immediately placement c. Do not brush for 24 hours d. Do not rinse, eat, or brush for 45 minutes after placement

Answer 32

d. Do not rinse, eat, or brush for 45 minutes after placement

Question 33

When preparing to mix alginate, which items would be necessary for this procedure? a. Impression tray, bowl, and spatula, burnisher b. Alginate flavoring, alginate and water, carver c. Bowl and spatula, alginate, water, and measuring devices

Answer 33

c. Bowl and spatula, alginate, water, and measuring devices

Question 33

Of the following products would NOT be used to irrigate the canals during a root canal? a. Saline b. Hydrogen peroxide c. Para chlorophenol d. Sodium hypochlorite

Answer 33

a. Saline

Question 34

Which impression is recommended to be taken first on a patient? a. Mandibular b. Maxillary c. Right quadrant d. Order does not matter.

Answer 34

a. Mandibular

Question 35

Which statement is true regarding maintenance of water lines: a. Water quality does not require testing b. Waterlines are self-maintaining c. Waterlines should be flushed after each patient d. None of the above

Answer 35

c. Waterlines should be flushed after each patient

Question 36

When fabricating tooth-whitening trays what product is applied to the models? a. Sticky wax b. Composite c. Block-out resin d. Bonding agent

Answer 36

c. Block-out resin

Question 37

Identify the best way to remove blood and debris from dental instruments: a. Hand scrub vigorously b. Soak in sodium hypochlorite c. Soak in alcohol d. Place in ultrasonic cleaner

Answer 37

d. Place in ultrasonic cleaner

Question 38

When you are isolating for a maxillary right procedure cotton roll are placed: a. On buccal and palatal b. On the buccal side only c. Palatal side only

Answer 38

b. On the buccal side only

Question 39

After you have light cured a dental sealant, which instrument is used to check the placement? a. Sickle scaler b. Spoon excavator c. Curette d. Explorer

Answer 39

d. Explorer

Question 40

What is the Benefit of reducing the palate or creating a hole in the palate on a model prior to vacuum forming a mouthguard or bleach tray? a. Prevent mouthguard / bleach tray material from sticking to the model b. Prevents overheating when creating the mouth guard/ bleach tray c. Improves the material adaptation and provides a well-fitting appliance d. None of the above

Answer 40

c. Improves the material adaptation and provides a well-fitting appliance

Question 41

During an endodontic procedure which instrument locates the canals? a. Endo explorer b. Endo spoon excavator c. Gates glidden d. Endo drill

Answer 41

a. Endo explorer

Question 42

When placing amalgam into the cavity preparation which instrument with be passed next to the dentist? a. Burnisher b. Amalgam carver c. Amalgam carrier d. Amalgam condenser

Answer 42

d. Amalgam condenser

Question 43

Which if the following is NOT a step in the maintenance of dental handpieces? a. Soak handpieces in disinfecting solution b. Lubricate of indicated by manufacturer c. Sterilize handpieces d. Flush by running for 20 to 30 seconds.

Answer 43

a. Soak handpieces in disinfecting solution

Question 44

When the dentist had created an access opening to begin root canal therapy, what instrument would locate the canals? a. Endo plugger b. Endo spreader c. Endo explorer d. Spoon excavator

Answer 44

c. Endo explorer

Question 45

If you have a periodontal pocket of a 5, this indicates: a. Bone loss b. Gingivitis c. Healthy tissue d. Severe bone loss

Answer 45

a. Bone loss