DENTAL ASSISTANT ONLINE EXAM PRACTICE KIT 1

Question 1 of 150

1. Question

1 points

Deciduous teeth are sometimes also known as which of the following?

Milk teeth
Permanent teeth
Premolars.
Stomach teeth.

Question 2 of 150

2. Question

1 points

What is likely to happen if a primary tooth is pulled early?

Permanent tooth comes in crooked.
Permanent tooth comes in straight
Nerve damage.
Nothing.

Question 3 of 150

3. Question

1 points

Dental impressions are made by:

Placing a tray with impression material in the patient's mouth
Taking a radiograph of the patient's mouth
Preparing a mold of the patient's mouth
Placing amalgam material in the patient's mouth.

Question 4 of 150

4. Question

1 points

The cheeks, gingiva, and lips are innervated by which of the following?

Facial nerve.
Lingual nerve.
Brachial nerve.
Trigeminal nerve.

Question 5 of 150

5. Question

1 points

Before treating a patient with a history of alcohol abuse, what would you want to consult the PCP about?

Kidney function.
Heart health.
Liver function.
Respiratory function.

Question 6 of 150

6. Question

1 points

What is the LARGEST size of inverted cone bur?

39
25
10
100

Question 7 of 150

7. Question

1 points

For which of the following procedures would choose a straight chisel?

To carve the interproximal surfaces of a restoration.
To shape and plane the enamel of the cavity preparation.
To remove supragingival calculus.
To determine how far below the gingiva the calculus extends.

Question 8 of 150

8. Question

1 points

Common causes of unconsciousness in dental surgery include all of the following except:

Cardiac arrest.
Skeletal fracture.
Syncope.
Airway obstruction.

Question 9 of 150

9. Question

1 points

Besides the registration form, a first time patient should complete:

A health history form.
An insurance claim form.
A dental lab form.
A recall card.

Question 10 of 150

10. Question

1 points

The cusps on the tops of some human teeth are also known as which of the following?

Canicculi.
Tubercles.
Cingula.
Basal ridges

Question 11 of 150

11. Question

1 points

Which of the following appliances is used to hold investment material and denture teeth when converting a try-in to a denture with plastic or porcelain teeth?

Well.
Cassette.
Flask.
Amalgamator.

Question 12 of 150

12. Question

1 points

A plastic, U-shaped dental dam frame is known as which of the following?

Otsby frame.
Young frame.
U-frame.
Osborne frame.

Question 13 of 150

13. Question

1 points

Which of the following is NOT true of the Wedelstaedt chisel?

Which of the following is NOT true of the Wedelstaedt chisel?

It is used in Class I cavity preparations.
It is slightly curved.
It is used to plane enamel.
It is used in Class IV cavity preparation.

Question 14 of 150

14. Question

1 points

All but which of the following instruments can be used to remove calculus above the gingiva?

Scaler.
Hoe.
Probe.
Chisel.

Question 15 of 150

15. Question

1 points

A toothbrushing technique in which the bristles are placed against the attached gingiva, at a 45 degree angle to the tooth, and are then dragged slowly across the tooth with a rolling motion of the wrist is known as which of the following?

Rolling.
Fones.
Bass.
Stillman's

Question 16 of 150

16. Question

1 points

Syncope is

A form of epilepsy.
The basics of reviving a patient.
The first step in preparing for an office emergency
A brief lapse in consciousness.

Question 17 of 150

17. Question

1 points

A patient who has just undergone dental surgery should avoid all but which of the following things for the first 24 hours post-surgery?

Smoking.
Drinking through a straw.
Applying heat to the jaw.
Applying ice to the jaw.

Question 18 of 150

18. Question

1 points

A patient with a history of hypoglycemia experiences tremors, sweating, and nervousness. What condition could this indicate?

Hyperglycemia.
Diabetic acidosis.
Hypoglycemia.
Insulin shock.

Question 19 of 150

19. Question

1 points

Which of the following rubber tips would you choose for polishing a restoration?

Brown.
White.
Green.
Blue.

Question 20 of 150

20. Question

1 points

Appointments for people with cardiac disease should be scheduled for:

Anytime in the day.
Early morning.
Afternoon.
End of the day.

Question 21 of 150

21. Question

1 points

Orban explorers are also known as which of the following

Pigtail.
#22
#17.
Acorn.

Question 22 of 150

22. Question

1 points

What can help prevent the endocarditis in patients with a high risk?

Chlorhexidine.
Insulin.
Prophylactic antibiotics.
Aspirin.

Question 23 of 150

23. Question

1 points

The long, twisted, flexible wire instrument used to evenly distribute gutta percha or cement in the canal is known as which of the following?

Gracey curette.
Jacquete.
Lentulo spiral.
Lenten spiral

Question 24 of 150

24. Question

1 points

Gingival pockets of which of the following sizes indicate healthy gums?

less than 5 mm
less than 2 mm
less than 3 mm
less than 1 mm

Question 25 of 150

25. Question

1 points

What type of filling material may release a small amount of fluoride?

Composite.
Inlay.
Amalgam
Glass ionomers.

Question 26 of 150

26. Question

1 points

Which of the following instruments would you choose to remove soft tissue interproximally?

Gingivenctomy knife.
Periodontal knife
Interdental knife.
Periodontal curette.

Question 27 of 150

27. Question

1 points

During storage, which impression material MUST be protected from absorbing moisture from the air?

Alginate
Silicon-based materials.
Polyethers.
Polysulphide.

Question 28 of 150

28. Question

1 points

Which of the following instruments would you use to isolate the effected tooth during an endodontic procedure?

Mouth prop.
Elevator
Rubber dam
Hoe.

Question 29 of 150

29. Question

1 points

Which of the following is the appropriate way to receive a used syringe from the operator?

Grasp the syringe with your little finger.
Have the operator place the syringe in your open palm.
Grasp the syringe firmly and lift it from the operator's hand.
Hook the syringe on your first and third fingers and slide it from the operator's hand.

Question 30 of 150

30. Question

1 points

An IPC is used for all but which of the following?

To carve the interproximal surfaces of a restoration.
To smooth interproximal surfaces.
To trim excess filling material from the interproximal surfaces
To pack amalgam into a cavity.

Question 31 of 150

31. Question

1 points

Dental supply invoices should be checked:

As the shipment is being unpacked.
Weekly.
Monthly.
Every two months.

Question 32 of 150

32. Question

1 points

A patient who has just undergone dental surgery asks what type of foods he is allowed to eat. Which of the following is an appropriate response?

The patient should only drink liquids through a straw for several days.
The patient may eat whatever he likes immediately following surgery.
The patient should follow a soft diet for several days after surgery
The patient should avoid anything containing sugar for at least 24 hours.

Question 33 of 150

33. Question

1 points

You are collecting clinical data from a 17 year old female patient. She reports increased sensitivity in one tooth, and she has developed signs of decay in other teeth since her previous visit. You notice lesions on her teeth as well. This patient should be further screened for which of the following?

Anorexia nervosa.
Bulimia nervosa.
Pregnancy.
Domestic violence.

Question 34 of 150

34. Question

1 points

Decay that occurs at the margin of a previous restoration is known as which of the following?

Subsequent decay.
Microleakage.
Collateral decay.
Recurrent decay.

Question 35 of 150

35. Question

1 points

Which of the following would you NOT choose to shape matrix bands?

Acorn burnisher.
T-ball burnisher.
Beavertail burnisher.
Ball burnisher.

Question 36 of 150

36. Question

1 points

When placing a rubber dam in a patient’s mouth, which of the following is the appropriate FIRST step?

Have the patient thoroughly rinse her mouth.
Explain to the patient what you are going to do
Clamp the dam to the appropriate tooth with the forceps.
Insert the saliva ejector.

Question 37 of 150

37. Question

1 points

How many incisors are in a normal human jaw?

4
8
2
16

Question 38 of 150

38. Question

1 points

The BEST way to guarantee that a patient will keep his appointment is to:

Confirm the patient's appointment.
Coordinate patient transportation.
Charge a fee for a missed appointment.
Educate patient on the importance of keeping the appointment.

Question 39 of 150

39. Question

1 points

Which toothbrushing technique would you advise a patient to use around orthodontic bands?

Bass.
Rolling.
Fones.
Charter's.

Question 40 of 150

40. Question

1 points

After amalgam has been placed in a cavity, what should be done with any unused amalgam ?

It should be washed down the sink.
It should be allowed to harden in the carrier.
It should be ejected into the amalgam well
It should be ejected into the trash.

Question 41 of 150

41. Question

1 points

Which of the following is the most common complication in dental procedures?

Syncope.
Hypotension.
Hyperventilation.
Hypoxia.

Question 42 of 150

42. Question

1 points

The assignment of benefits line on an insurance form is signed by:

The dentist.
The office manager.
The dependent.
The subscriber

Question 43 of 150

43. Question

1 points

For which of the following procedures would you choose a pear bur?

Opening a tooth for treatment.
Smoothing the alveolar bone.
Opening and extending the cavity preparation.
Forming the cavity walls of the preparation.

Question 44 of 150

44. Question

1 points

Restorative materials which bond to enamel and dentin, and which release fluoride over time, are known as which of the following?

Glass polymers.
Acid-etch systems.
Compomer.
Glass isonomers.

Question 45 of 150

45. Question

1 points

Which of the following instruments would you choose if it is necessary to sever the periodontal ligament prior to an extraction?

Periodontal knife.
Interdental knife.
Periodontal scissors.
Periotomes.

Question 46 of 150

46. Question

1 points

Which of the following dental cements is the weakest?

Calcium hydroxide.
Glass ionomer cements.
Resins (urethane acrylate).
Resin-modified glass ionomer cements.

Question 47 of 150

47. Question

1 points

What does an increase in refined carbohydrates lead to?

Antibacterial agents.
Changes in plaque pH.
Class II occlusion.
Enamel fluorosis.

Question 48 of 150

48. Question

1 points

A dental dam frame which is U-shaped and made of metal is known as which of the following?

Otsby frame. .
Young frame
U-frame.
Osborne frame

Question 49 of 150

49. Question

1 points

The genial tubercules are a helpful landmark when trying to identify what area during the mounting process?

Anterior nasal spine.
The maxilla.
Maxillary molars.
The mandible.

Question 50 of 150

50. Question

1 points

A patient bites the rod too far forward for a panoramic. What would the picture look like?

Ghost of the mandible.
Gazebo effect.
Visible spine and blurry anterior teeth.
Condyles close to edge of film.

Question 51 of 150

51. Question

1 points

Positioning the raised dot correctly in periapicals will:

Not interfere with the anatomy.
Block desired areas.
Help identify molars.
Help identify incisors

Question 52 of 150

52. Question

1 points

A dental office is looking at equipment to add for the coming two years to accommodate its increased patient numbers. The lead assistant, office manager, and dentist are evaluating the options. The office currently manually processes radiographs and is considering an automatic processor. What is an advantage of an automatic processor?

Consistency and reliability.
Lower costs
Less control over speed.
Same chemicals used as for manual processing

Question 53 of 150

53. Question

1 points

The lead apron placed on the patient during a radiograph is there to

Get a better image of the oral cavity.
Make the patient comfortable.
Increase body heat.
Protect the patient's organs.

Question 54 of 150

54. Question

1 points

What landmark does Eddy use to identify a maxillary anterior periapical view radiograph?

Mandibular canal.
Floor of the nasal cavity.
Incisive foramen
Genial tubercle.

Question 55 of 150

55. Question

1 points

What is true of the decay of the patient’s teeth?

It is severe.
It is mild.
It is moderate
There is none.

Question 56 of 150

56. Question

1 points

A dental assistant has been diagnosed with SKIN CANCER. She should:

Continue taking x-rays without further caution
Not continue taking x-rays and avoid any exposure
Stop processing x-rays only.
Not take x-rays until after the skin cancer is removed.

Question 57 of 150

57. Question

1 points

The best PID length to improve image resolution is:

8 inches.
4 inches.
12 inches.
16 inches.

Question 58 of 150

58. Question

1 points

The kVp control regulates all of the following except:

Accelerating potential.
Attraction between anode and cathode.
The penetrating power of the X-ray beam.
Heating of the filament.

Question 59 of 150

59. Question

1 points

What does this x-ray show

Gingivitis.
TMJ.
Osseo-implant.
Tooth sensitivity.

Question 60 of 150

60. Question

1 points

Which of the techniques places the film parallel along the axis of the tooth?

Bisecting angle.
Parallel.
Horizontal.
Blank image.

Question 61 of 150

61. Question

1 points

A lead apron may be damaged if not properly stored. What are signs of damage?

Tears.
Folds.
Cracks.
Cracks. All of the above.

Question 62 of 150

62. Question

1 points

Placing processors with the daylight film-loading features in subdued lighting helps to prevent the film image from:

Clear.
Being to light.
Being to dark.
Fogging.

Question 63 of 150

63. Question

1 points

In relation to the average setting recommended by the equipment and film manufacturer, the exposure setting for a patient with a SMALL BONE structure is:

Adjusted to the next highest kVp or mA setting.
Adjusted to the second lowest kVp or mA setting
Adjusted to the next lowest kVp or mA setting.
Kept at the average recommended setting.

Question 64 of 150

64. Question

1 points

What form of mounting radiographs is most preferred by the American Dental Association (ADA)?

Lingual.
Radial.
Labial.
Buccal.

Question 65 of 150

65. Question

1 points

Developer and fixer solutions should be replenished:

Weekly.
Daily.
Every two weeks.
Every month.

Question 66 of 150

66. Question

1 points

Clinical evidence shows safety practices that minimize patient exposure affect the outcome of radiographs by:

Changing the fixing time.
Impacting the chemicals used.
Changing the developing time.
Improving the image quality.

Question 67 of 150

67. Question

1 points

Dental assistants can effectively reduce the amount of radiation their patients receive by

Limiting the beam to a direct and small area of the patient
Moving the beam around during the x-ray.
Giving the patient a dosimeter.
Using a slow speed.

Question 68 of 150

68. Question

1 points

What is the best choice for children?

Occlusal.
Bitewing.
Cephalometric.
Panoramic.

Question 69 of 150

69. Question

1 points

Operators under no circumstances should

Use handheld radiation devices.
Wear protective gear.
Take x-rays of children.
Be in the path of the radiation beam.

Question 70 of 150

70. Question

1 points

At the beginning of the day, the dental office procedures require radiograph personnel to REMOVE some of the old processing solutions BEFORE adding replenishers. The reason is to:

To ensure the proper strength.
To recycle old solution.
Prevent the tanks from overflowing. .
Prevent cross contamination

Question 71 of 150

71. Question

1 points

In one automatic processor, the manufacturer states the temperature and time in the developer are inversely related. This means:

The higher the temperature, the shorter the time
The lower the temperature, the shorter the time.
The temperature and time ratio is the same.
The higher the temperature, the longer the time.

Question 72 of 150

72. Question

1 points

The benefits of dental radiation

Do not exist.
Only benefit a few people.
Outweigh the risks.
Are low

Question 73 of 150

73. Question

1 points

The most resistant material to radiation penetration is:

Copper.
Silicon.
Aluminum.
Lead.

Question 74 of 150

74. Question

1 points

Beam alignment guides can help reduce patient exposure and retakes because they help prevent:

Fogged films.
Cone cuts.
Dark film.
Faded film

Question 75 of 150

75. Question

1 points

Film processing maintenance requires that surfaces of the tanks and countertops should be cleaned with a damp sponge:

After each use
Every 30 days.
Every 4-6 weeks.
Every 2 weeks.

Question 76 of 150

76. Question

1 points

The first sign that appears when a patient has x-ray dermatitis is

Paleness of the skin.
Blindness.
Loss of hair.
Redness of the skin.

Question 77 of 150

77. Question

1 points

A charged coupling device is made of:

Phosphor.
Calcium tungsten.
Lead.
Silicon.

Question 78 of 150

78. Question

1 points

Which term has a clear relationship between the dose of exposure and the ill effect (i.e., specific dose-to-outcome)?

Teratogenic.
Cumulative
Stochastic.
Non-stochastic.

Question 79 of 150

79. Question

1 points

Which of the following is NOT a historical finding that indicates the need for radiography?

Implants.
Previous endodontic therapy.
Swelling.
Family history.

Question 80 of 150

80. Question

1 points

What is the relationship between the two images

The image on the top is before teeth straightening and the image on the bottom is after teeth straightening.
The image on the top is before dentures and the image on the bottom is after dentures.
The image on the bottom is before teeth straightening and the image on the top is after teeth straightening.
The image on the bottom is before dentures and the image on the top is after dentures.

Question 81 of 150

81. Question

1 points

The radiograph operators should not hold the x-ray tube because

They need both hands free to operate the equipment switch
X-ray tubes become very hot while operating.
X-ray housing leaks radiation.
They need to adjust the film.

Question 82 of 150

82. Question

1 points

State requirements regarding radiation equipment, radiography operator and patient safety varies. Some states require dental offices to submit a radiation safety plan containing what kind of information

Infection control procedures
Office accounting and billing methods.
Composition of radiation barriers.
Staff vaccination records.

Question 83 of 150

83. Question

1 points

When cleaning tanks or metal parts of the automatic processor, do not use:

A sponge.
Steel wool.
An aerosol spray.
Soapy water.

Question 84 of 150

84. Question

1 points

What will cause a patient’s chin to tip up to far

Using the edentulous guide.
Bite rod is seated outside of the guide.
Bite rod is seated inside of the guide
Using the alar tragus line.

Question 85 of 150

85. Question

1 points

How many films are necessary for the anterior parallel technique?

6
7
8
9

Question 86 of 150

86. Question

1 points

What is the correct sequence for manual processing?

Washing, developing, fixing.
Developing, washing, fixing, washing.
Fixing, developing, washing.
Washing, developing, washing, fixing.

Question 87 of 150

87. Question

1 points

How do you prevent overexposure?

Use fewer impulses.
Use longer impulses.
Use a longer exposure time.
Adjust the time but not the impulses.

Question 88 of 150

88. Question

1 points

In the standard mounting procedure, the raised dot is oriented in which direction?

Upward.
Facing the right.
Downward.
Facing the left.

Question 89 of 150

89. Question

1 points

Cells that are the most susceptible to radiation damage include the following, except

Moving cells.
Young growing cells.
Blood-forming cells.
Reproductive cells.

Question 90 of 150

90. Question

1 points

Cells that are the most susceptible to radiation damage include the following, except

Moving cells.
Young growing cells.
Blood-forming cells.
Reproductive cells.

Question 91 of 150

91. Question

1 points

If the film is over exposed to a light source during storage can cause what?

Darkened film.
Blurred film.
Fogged film
No effects

Question 92 of 150

92. Question

1 points

The x-ray image shows an impaction of what molar?

Disto-angular third molar.
Second molar
Mesio-angular third molar.
First molar.

Question 93 of 150

93. Question

1 points

The collimator on an x-ray machine is designed to do what in order to eliminate exposure to the technician?

Reduce the strength of the radiation.
Focus the primary beam on a specific area only.
Increase the temperature to avoid spreading germs.
Ensure that scatter radiation is deflected by lead shields.

Question 94 of 150

94. Question

1 points

The best radiograph to choose to evaluate a suspected salivary duct obstruction is the:

Periapical.
Panoramic
TMJ.
Occlusa

Question 95 of 150

95. Question

1 points

ental radiography contributes to what percent of x-rays taken in the healthcare setting?

~1%
10%
25%
30%

Question 96 of 150

96. Question

1 points

Which of the following will show the gazebo effect?

Chin tipped up.
Head twisted.
Chin tipped down.
Head tipped.

Question 97 of 150

97. Question

1 points

Which safety practice is an example of a dental clinic using distance to minimize worker exposure?

Having a lead-line wall around the radiography room.
Having a thick brick wall around the radiography room.
Placing the x-ray machine switch right next to the equipment.
Placing the x-ray machine switch outside of the radiography room

Question 98 of 150

98. Question

1 points

A radiograph containing an image of short teeth and blunted roots is an example of:

Distortion.
Poor contrast.
Elongation.
Foreshortening.

Question 99 of 150

99. Question

1 points

A structure that appears radiolucent in a dental radiograph is

The maxillary sinus.
A median suture
The mandibular canal.
Nasal cartilage.

Question 100 of 150

100. Question

1 points

There are various types of waste and each must be disposed of properly. Which of the following waste types is defined as “items that have had contact with blood or other body secretions”?

Contaminated.
Hazardous
Infectious.
Regulated.

Question 101 of 150

101. Question

1 points

After a flash steam, how should the instrument be transported

Gloved hands.
Tray.
Cassette.
Sterile tongs

Question 102 of 150

102. Question

1 points

To remove a disposal mask, the wearer should:

Grab the mask from the front.
Remove starting from the sides of the mask.
Use the metal nose band to grasp the mask
Remove the mask by grasping the ties or elastic bands

Question 103 of 150

103. Question

1 points

What does the number “1” in the red section of the chemical hazard label represent?

Serious health hazard. Special hazard.
Special hazard.
Slight flammability hazard.
Minimal reactivity hazard.

Question 104 of 150

104. Question

1 points

Of the following, which is NOT an example of an engineering/work practice control?

Syringe
Model trimmer splash guard.
Puncture-resistant sharps container.
Ventilation hood.

Question 105 of 150

105. Question

1 points

Holding dental instruments the proper way can help avoid transmitting microorganisms from the dental assistant to the patient. What is the proper way to grasp dental instruments?

Palm grasp.
Pen grasp.
Palm-thumb grasp.
All of these.

Question 106 of 150

106. Question

1 points

If a package that stores sterilized instruments becomes wet, what should be done?

Nothing. The package will eventually dry on its own.
The package should be dried with a disposable towel
The package should be dried with a non-disposable towel.
The instruments should be re-processed.

Question 107 of 150

107. Question

1 points

Toby was finishing with a patient when he was stuck with one of the sharp instruments. How soon should Toby report the incident?

At the end of the day before clocking out.
Immediately.
Within 5 days.
After the patient leaves.

Question 108 of 150

108. Question

1 points

A clinic provides all patients an oral care kit and patient education literature after every cleaning treatment. A patient sees the word dentifrice in the literature and asks the dental assistant what is a dentifrice. The simplest explanation the assistant can give is that a dentifrice is:

A dental sealing preparation.
A cleaning or polishing compound used to promote oral health
A prosthesis used to replace missing teeth.
A device used to reduce abnormal wear on the teeth or injury.

Question 109 of 150

109. Question

1 points

Clostridium difficile causes

Skin lesions and infections.
Diarrhea.
Coughing and mucus formation
Shortness of breath.

Question 110 of 150

110. Question

1 points

To prevent the transmission of blood borne pathogens, OSHA requires a sharps disposal system. The sharps disposal system should have all the following features except for:

Puncture proof.
Leak resistant
Flexible.
Labeled.

Question 111 of 150

111. Question

1 points

What is can be placed over the x-ray head as a barrier?

Sandwich bag.
Cups.
Chair bag.
Apron.

Question 112 of 150

112. Question

1 points

Which of the following is infectious disease stage two?

Incubation.
Prodromal
Acute.
Convalescent.

Question 113 of 150

113. Question

1 points

A patient is told the infection she has is transferrable. She asks the dental assistant possible ways that it can leave her body. Which of the following would most likely NOT be an example that he would give

Sputum.
Saliva.
Hair follicles.
Feces.

Question 114 of 150

114. Question

1 points

When would an employer not be allowed to identify the source individual of a needle stick?

State privacy laws.
OSHA regulations
Federal law.
No reason.

Question 115 of 150

115. Question

1 points

How much soap should be used for proper hand washing?

1.5 teaspoons
1 teaspoons
2 teaspoons
1 tablespoons

Question 116 of 150

116. Question

1 points

Of the following, what is the level of disinfection that kills most vegetative bacteria (not Mycobacterium tuberculosis), some fungi and destabilizes some viruses?

Low-intermediate.
Intermediate.
Low.
High

Question 117 of 150

117. Question

1 points

Mercury needs to be stored away from __

Heat.
Cold.
Dark.
Dry conditions.

Question 118 of 150

118. Question

1 points

An assistant is going to wear a hair covering. What is true of the mask?

It is not worn.
It is put on after the cap.
It is pinned to the cap.
It is put on before the cap.

Question 119 of 150

119. Question

1 points

Chemical indicators should be placed in the ______of each sterilized

Front.
Back.
Center.
Top.

Question 120 of 150

120. Question

1 points

What should sodium chloride be stored in?

Copper.
Glass.
Brass.
Stainless steal.

Question 121 of 150

121. Question

1 points

What PPE would MOST likely not be helpful in preventing exposure to mercury?

Face shield and respirator.
Goggles.
Rubber gloves with long cuffs.
None of these.

Question 122 of 150

122. Question

1 points

Packs are sterilized in what instrument-processing area

Delivery.
Sterilization / storage
Packaging.
Contaminated.

Question 123 of 150

123. Question

1 points

Which of the following is an engineering control of reducing exposure to mercury?

Replace mercury devices with safer devices.
Limit access to areas that contain mercury.
Put warning labels on containers with mercury
Train employees on how to clean up mercury spill

Question 124 of 150

124. Question

1 points

Of the following disinfectants, which includes alkyldimethylethylbenzyl ammonium chloride as an active ingredient?

Dual phenolic.
Second generation quaternary ammonium compound
Fourth generation quaternary ammonium compound.
Alcohol-based phenolic

Question 125 of 150

125. Question

1 points

What should be used to clean up small mercury spills

Trap bottle.
Tape
Vacuum.
Fingers.

Question 126 of 150

126. Question

1 points

Potential sources of exposure to blood-borne pathogens include:

Gloves.
Gloves and face masks.
Barriers and gloves.
Gloves, face masks, gowns, and barriers.

Question 127 of 150

127. Question

1 points

OSHA evacuation requirements define the:

Number and type of emergency escape routes.
The type, number, and construction of emergency escape routes
The number of emergency escape routes.
The construction of the emergency escape routes.

Question 128 of 150

128. Question

1 points

A dental assistant must use the small office steam sterilizer to clean dental equipment. Which of the following would be the cycle time at 250°F.

10 minutes.
60 minutes.
30 minutes.
40 minutes.

Question 129 of 150

129. Question

1 points

An example(s) of a work practice control to prevent cross-contamination is:

Masks, gloves, aprons.
Hand hygiene.
Safety to devices on a syringe.
A disposal law.

Question 130 of 150

130. Question

1 points

Which items are generally not disposal?

Face masks.
Goggles.
Gloves.
Hair nets.

Question 131 of 150

131. Question

1 points

When a dental instrument contains so few microbes that it is safe to handle, what has taken place?

Cleaning.
Disinfecting
Sterilizing.
None of these.

Question 132 of 150

132. Question

1 points

Eye masks protect from splatter and _____

Germs.
Debris.
Pathogens.
Alcohol.

Question 133 of 150

133. Question

1 points

One method to inhibit biofilm is to:

Flush the dental units only when they become clogged.
Use the dental unit without flushing at the beginning of the day
Avoid flushing the lines in between patients.
lush the dental unit water lines at the beginning of the day.

Question 134 of 150

134. Question

1 points

How should nails be kept?

Long and filed.
Short and trimmed
Polished.
Acrylic.

Question 135 of 150

135. Question

1 points

Dental assistants are vigilant about “breaking the chains” of infection. Of the following, which activity serves to “break the chain” between the agent and the reservoir?

Promoting proper hygeine.
Maintaining clean dressings on wounds.
Dental assistants wash hands before coming in contact with contaminated items.
Disinfecting.

Question 136 of 150

136. Question

1 points

Of the following, the most critical PPE(Personal protection equipment) is:

Shoes.
Gloves
Mask.
Lab coat.

Question 137 of 150

137. Question

1 points

What is the maximum allowable amount of nitrous oxide used in a patient at a given time?

50 ppm
70 ppm
65 ppm
85 ppm

Question 138 of 150

138. Question

1 points

When using a visible light-cured unit, the risk of retinal damage can be minimized if dental personnel wear:

Laboratory glasses.
Sun glasses.
OSHA-approved eyewear.
Special protective glasses.

Question 139 of 150

139. Question

1 points

What is Not a major organism group that is a source of infection

Fungi.
Microorganism
Virus.
Bacteria.

Question 140 of 150

140. Question

1 points

Initial first aid for a minor cut in the dental office is

Dress the wound.
Apply topical antibiotics.
Clean the wound.
Report the incident.

Question 141 of 150

141. Question

1 points

The dental assistant is using an antimicrobial chemical to kill the microorganisms on environmental services. Which of the following is she MOST likely using?

Disinfectant.
Antibiotic.
Antiseptic.
Sterilant.

Question 142 of 150

142. Question

1 points

What is the minimum length of time for washing hands?

20 seconds.
25 seconds.
15 seconds.
30 seconds.

Question 143 of 150

143. Question

1 points

Which of the following requires a drying time?

Rapid heat.
Dry heat.
Chemical vapor.
Autoclave.

Question 144 of 150

144. Question

1 points

The dental assistant is using a quaternary ammonium compound to disinfect. What does “quaternary ammonium compound” mean?

Synthetic.
Nonenveloped
Diluted.
Free of alcohol.

Question 145 of 150

145. Question

1 points

When are film barriers removed?

They are not removed.
Before being taken to the dark room.
After being removed from the dark room.
After being taken to the dark room.

Question 146 of 150

146. Question

1 points

Which of the following is a semi-critical instrument?

Scaler.
Forceps
Mirror.
X-ray head.

Question 147 of 150

147. Question

1 points

A dental assistant with hand lesions will cause which type of transmission?

Team-to-patient.
Patient-to-team.
Patient-to-patient.
Office-to-community

Question 148 of 150

148. Question

1 points

Which of the following can be used to substitute labels on biohazardous materials containers?

Blue bags or containers.
Red bags or containers.
Green bags or containers.
Yellow bags or containers.

Question 149 of 150

149. Question

1 points

Dental workers have an increased risk of developing ______

Cancer.
Edema.
Bacterial endocarditis.
Carpal tunnel.

Question 150 of 150

150. Question

1 points

A scavenging system is necessary when:

Lasers are used.
Latex is used.
Bonding materials are used.
Nitrous oxide is used.

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