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EFDA Practice Exam Questions > Practice Exam 1 > Flashcards

Practice Exam 1 Flashcards

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1
Q

which of the following would you choose to open a tooth for endo treatment?
A. beavertail Burnisher
B. inverted cone bur
C. round bur
D. cross-cut bur

A

C
A round bur is a cutting bur. It is used to open a cavity and remove carious material. It is also used to open a tooth for endodontic treatment.

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2
Q

which of the following calls for impacted extraction?
A. A tooth that has developed carious lesions along the lingual surface.
B. A deciduous tooth that has not fallen out and is crowding permanent teeth.
C. A tooth which is unable to erupt because it is covered with gingival tissue.
D. Deep and infected gingival pockets.

A

B
Impacted teeth are unable to erupt because they are impeded by soft tissue or bone. This requires an extraction and typically happens under conscious sedation.

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3
Q

A tooth is partially erupted and covered with tissue and the grooves are inaccessible. In this case, what should happen?
A. Etchant should be applied up to the tissue.
B. Etchant should be applied under the tissue.
C. Etchant should be applied around the tissue.
D. Etchant should not be applied.

A

D
When the grooves are inaccessible, etchant should not be applied. Another means of providing caries prevention should be temporarily used until the etchant and sealant can be applied properly.

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4
Q

Prior to applying etchant, the teeth fissures and pits must be cleaned. This step can be accomplished using all of the following EXCEPT for:

A. Pumice.
B. Prophy paste.
C. Bristles of a wet brush.
D. Bristles of a dry brush.

A

C
The teeth can be cleaned using pumice, prophy paste, or the bristles of a dry brush prior to etching. A wet brush should not be used to clean the teeth.

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5
Q

When preparing an instrument tray for a prophylactic scaling, cutterage, and polishing procedure, all but which of the following should be included?
A. Periodontal probe.
B. Gracey curette.
C. Dental floss.
D. Suture set up.

A

D
Prophylatic scaling and cutterage does not involve incisions. Therefore you do not need to include the suture set up on the instrument tray for this procedure.

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6
Q

Patient education to help maintain oral health might include dietary recommendations such as:
A. Avoid sodas and “energy” drinks.
B. Eat high acid-content foods, such as pickles.
C. Allow small children to frequently sip on fruit juices.
D. Eat sugar-coated cereals for breakfast.

A

A
Sodas and “energy” drinks contain larges amount of caffeine and sugar, which is damaging to the teeth. Also, these items do not provide healthy nutrition to allow proper development in young children. Children and adults should limit, if not totally eliminate, these drinks to prevent caries.

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7
Q

In addition to considering the tooth surfaces, treatment planning for sealants should also take into account:
A. The patient’s age.
B. Patient’s occupation.
C. Caries risk factor.
D. Exercise habits.

A

C
Besides considering the tooth surfaces, the orthodontal or general dental teeth should also consider the patient’s caries risk factor when planning a treatment. Some health conditions might make some patients more prone to caries.

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8
Q

When instructing a patient how to choose an appropriate toothbrush, which of the following head sizes should you suggest?
A.1 inch x ½ inch.
B. 1 inch x 1 inch.
C. 1 inch x 1 ½ inches.
D. ½ inch x ½ inch.

A

A
The toothbrush head should be small to allow for easy access and use in the mouth. 1 inch x ½ inch is the ideal size for an adult brushed.

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9
Q

The foot pedal on the handpiece that controls speed is known as which of the following?
A. Accelerator.
B. Hemostat.
C. Modulator.
D. Rheostat.

A

D
Dental handpieces are controlled with foot pedals. These are known as rheostats. The use of a foot pedal allows an operator to modulate speed of the handpiece while leaving the hands free to conduct treatment.

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10
Q

Filled sealants are usually what color?

Opaque.
Metallic.
Clear (transparent).
Tinted.
A

Opaque
Filled sealants are opaque. They come in white or tooth-colored shades.

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11
Q

A work practice control to minimize needlesticks includes:
A. Placing several sharps containers close to where the items are used.
B. Using wastebaskets for broken needles.
C. Filling the sharps container to the lid.
D. Having one large centrally located sharps container for the office.

A

A
One means to minimize needlesticks is to provide several sharps containers close to where the items are used. One large centrally located sharps container involves travel risks. Additionally, sharps containers should never be filled to the lid nor should wastebaskets be used to dispose of broken needles.

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12
Q

The mucosal surfaces of the eyes, nose, and mouth are affected by which route of infection?

Direct contact.
Indirect contact.
Aerosol.
Droplet.
A

Droplet infection is caused by aerosol. It affects the mucosal surfaces. This includes transfer through the eyes, nose, and mouth.

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13
Q

How long will sealants protect teeth?

5 - 10 years.
10 - 15 years.
15 - 20 years.
20 + years.
A

Sealants protect teeth for 5 - 10 years. They wear down naturally. So after some time, sealants can be re-applied, especially on permanent molars.

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14
Q

Antibiotic prophylaxis should be considered for patients who have which of the following?

Osteoporosis.
Infective endocarditis.
Diabetes.
Low blood pressure.
A

B
Antibiotic prophylaxis for dental procedures may be recommended for patients with underlying cardiac conditions associated wit the highest risk of adverse outcome from infective endocarditis.

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15
Q

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

Cardiac arrest.
Skeletal fracture.
Syncope.
Airway obstruction.
A

B
Common causes of unconsciousness in dental surgery include all of the following except skeletal fracture. Temporary loss of consciousness from fainting (syncope) is precipitated by psychological factors such as pain or fear and most commonly occur in young males.

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16
Q

The portion of a bur that is inserted into the dental handpiece is known as which of the following?

Neck.
Head.
Shoulder.
Shank.
A

The portion of the bur that inserts into the dental handpiece is the shank. Shanks may be straight, latching, or friction-grip.

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17
Q

An adult should get which of the following amounts of fluoride each day for optimal dental health?

15 mg.
.5 mg.
100 mg.
4 mg.
A

The daily recommended fluoride intake for an adult is between 1.5 and 4 mg daily. Because fluoride can come from a number of sources, it is key to take into account all potential sources of fluoride before supplementing.

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18
Q

Although infectious agents are present at this stage, they are less in number or not as effective.

Prodromal.
Acute.
Convalescent.
Incubation.
A

C
There are four stages of infectious disease. Incubation: The time when the infectious agent enters the body, but recognizable symptoms have not yet appeared. Prodromal: The first symptoms of the illness appear. Acute: Symptoms of the illness are obvious. Convalescent: The number of microorganisms decreases or they become less effective.

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19
Q

Hands at the throat is the universal signal for which of the following?

Choking.
Allergies.
Angina.
Asthma.
A

The risk of choking increases during dental procedures. An airway may be blocked by pastes or debris. If a patient brings his or her hands to the throat, ask if he or she is choking.

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20
Q

Which of the following is NOT true of fluoride gel that is used in the home?

A. It should not be used as a substitute for regular toothpaste.
B. It should only be used as often as directed by the dentist.
C. The patient should continue his or her regular oral hygiene regimen in addition to the gel usage.
D. It should be used at all toothbrushings.

A

D
Prescription fluoride gel should only be used as often as directed by the dentist – often just once a day. The patient should continue to brush with regular toothpaste at other times throughout the day. Prescription gel is not a substitute for regular toothpaste, but an addition to an oral care routine.

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21
Q

Hemostats are used when bending wire to:

A. Place ligatures wire over bracket wings.
B. Cut archwire.
C. Bend round wires.
D. Bend rectangular wire

A

A
Hemostats are used for a variety of purposes in dentistry and orthodontics. This basic instrument can be used for holding small items. During wire bending, the hemostat is used to place elastomeric modules, elastic chains, and ligature wires over bracket winds.

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22
Q

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

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

A

Explain to the patient what you are going to do
The rubber dam procedure can be uncomfortable for patients, especially those who may be claustrophobic. Explaining what you are going to do before you begin helps to reassure the patient.

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23
Q

Sealants will not prevent decay in which tooth surface?

Occlusal.
Interproximal.
Buccal-occusal.
Lingual-occusal.
A

interproximal
Sealants will not prevent decay on all tooth surfaces. For instance, sealants will not help teeth prone to interproximal decay.

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24
Q

A dental assistant finds herself at the infectious disease stage where the infectious agent has entered her body, but recognizable symptoms have not yet appeared. What is this stage?

Prodromal.
Acute.
Convalescent.
Incubation.
A

Incubation
There are four stages of infectious disease. Incubation: The time when the infectious agent enters the body, but recognizable symptoms have not yet appeared. Prodromal: The first symptoms of the illness appear. Acute: Symptoms of the illness are obvious. Convalescent: The number of microorganisms decreases or they become less effective.

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25
A dental unit with equipment that is located at the operator's side, mounted to a moveable cart, is known as which of the following? Rear delivery. Side delivery. Thoracic delivery. Lateral delivery.
A side delivery system is an equipment system that is located on the dentist's side. It may be on a moveable arm or mobile cart.
26
Jaw opening involves which movement of the mandible? Depression. Elevation. Protrusion. Retraction (retrusion).
Depression The mandible is capable of a variety of movements. When the mandible opens, it involves depression of the bone.
27
The proper sequence of steps for sealants is: Clean, etch, seal, cure. Clean, cure, etch, seal. Cure, etch, clean, seal. Seal, etch, clean, cure.
Clean, etch, seal, cure The correct sequence for applying etchant and sealant is: clean, etch, seal, and cure. During these steps, the teeth should be kept dry.
28
During orthodontic procedures, the assistant might perform all of the following activities EXCEPT for: A. Mix or prepare the cement. B. Prepare orthodontic bands for cementation. C. Cement orthodontic bands to the teeth. D. Remove the cement from the around the gums after placing the bands.
Cement orthodontic bands to the teeth The assistant performs many of the functions during orthodontic procedures. For instance, the assistant mixes and prepares the cement, prepares the bands to be cemented, and removes cement from around the gums. However, the orthodontist will actually cement the bands to the teeth.
29
Which of the following instruments would you choose to contour the alveolar bone? Finishing bur. Surgical bur. Diamond bur wheel. Beavertail burnisher.
The surgical bur is used to contour the alveolar bone and tooth structure. It is used with the low speed dental handpiece.
30
When a patient arrives for an early morning appointment and complains of not feeling well, has clammy skin, a racing pulse, and slight numbness in the arm, the healthcare worker should: Wait for the dentist to arrive. Call EMS immediately. Contact the patient's physician. Call the patient's spouse for information.
Call EMS immediately If the patient is in great stress and can't be placed in a dental chair, EMS should immediately be called. The patient's health history should be reviewed and the person to be contacted should be identified.
31
A plastic, U-shaped dental dam frame is known as which of the following? Otsby frame. Young frame. U-frame. Osborne frame.
A plastic, U-shaped dental dam frame is known as a U-frame. A metal U-frame is known as a Young frame.
32
The zygomatic bones are the: Upper jaw. Lower jaw. Neck. Cheeks.
The zygomatic bones are the bones of the cheeks. The upper jaw bones are the maxilla. The lower jaw bones is the mandible. The neck comprises of bones called vertebrae.
33
A problem with heat-curing acrylic resin is the heat: Makes the resin too hard. Makes the resin too soft. Distorts the fine spring components of the appliances. Hardens the fine spring components of the appliance.
Distorts the fine spring components of the appliances Acrylic baseplates used to be commonly made with a heat-curing resin. The disadvantage of the heat-curing resin was it distorted the fine spring components of some appliances. Now, baseplates are made from a self-curing resin.
34
What will prevent exposure to mercury vapor from a poorly filled capsule? Amalgamator. Gloves. Cover on amalgamator. Vacuuming the carpet.
Cover on amalgamator A leaked capsule will cause mercury vapor. Exposure to mercury vapor can be prevented if the cover on the amalgamator is used.
35
Which patient is contraindicated to receiving a sealant? A patient is about to have maxillo-facial surgery. A patient's molars are semi-erupted. A patient has cleft palate. A patient has cleft lip.
Sealants should not be used on semi-erupted teeth. This is a contraindication.
36
What is one of the most common chemical hazard warning labels in the workplace. Keep out. Flammable solvents. Warm to touch. Danger.
Flammable solvents Chemicals are hazardous. Most are capable of catching on fire.
37
OSHA recommends proper disposal of scrap amalgam because of: Silver. Mercury. Iron. Nickel.
Amalgam was at one time a commonly used substance for dental fillings. Amalgam contained mercury, which has been the source of an ongoing controversy.
38
Which of the following would you NOT place on the tray for a composite procedure set-up? Diamond disc. Composite burnisher. Spoon excavator Composite finishing discs.
Diamond discs are not used in composite procedures. For polishing and carving purposes, composite placement instruments, finishing strips, and composite finishing discs are used.
39
The next step after applying the etchant material (acid) is to: Rinse the surfaces. Dry the surfaces. Apply the sealant. Cure with a light.
The next step after allowing the etchant to sit for its appropriate time is rinsing. The etchant must be rinsed from the surfaces. Then, the clinician should dry the teeth and look to see if they are adequately etched.
40
Etchant is which chemical? Hydrochloric acid. Acetic acid. Phosphoric acid. Sulphuric acid.
Etchant is phosphoric acid. The other answer choices may be used for other purposes in the dental setting, but not for sealing the teeth.
41
In an X-ray exposure, the dental worker should do all of the following except: Explain the X-ray procedure to the patient. Seat the patient and drape with lead apron and thyroid collar. Wash hands and put on gloves, mask, and protective eyewear. Hold the film in the patient's mouth while the X-ray is being taken.
In an X-ray exposure, the dental worker should do all of the following except hold the film in the patient's mouth while the X-ray is being taken. The dental worker should always stand behind a protective barrier when the X-ray is being made.
42
Absorbent paper points are used for all but which of the following? To dry canals. To measure the patient's occlusion. To take cultures of the canal. To place medications into the canal.
Absorbent paper points are used to dry canals after root canal. They are also used to take cultures of the canal or deliver medication. A patient's occlusion is measured with articulating paper. They are not used to measure occlusion.
43
A recurrent condition caused by various cerebral and non-cerebral disorders is known as: Hypoglycemia. Syncope. Cerebral palsy. Epilepsy.
Epilepsy is caused by various cerebral and non-cerebral disorders. It manifests itself with constant muscular contractions and produces an appearance of rigidity.
44
ow many categories are there in a chemical warning label? 2 1 4 3
Warning labels are designated by the National Fire Protection Association. These labels differentiate between type of hazard. Blue indicates health, red indicates flammability, yellow indicates reactivity, and white indicates contact. In each category square will be a number ranging from 0 (low level of risk) to 4 (high level of risk).
45
Of the following, which is NOT a crucial training component as per OSHA's Bloodborne Pathogen Standard Revision? Explanation of bloodborne standard. Dental charting. Epidemiology and symptoms of bloodborne disease. How to select the proper PPE.
"Dental charting" is not a topic outlined in OSHA's Bloodborne Pathogen Standard Revision as a crucial training component. The other options listed as well as many others do exist.
46
A patient claims she has been diagnosed with mercurialism. What is mercurialism? Mercury poisoning. Nitrous oxide poisoning. Curing light poisoning. Latex poisoning.
Mercury poisoning is also known as hydrargyria or mercurialism. Amalgam dental procedures are said to be one cause for the diagnosis.
47
All muscles of mastication are innervated by the Salivary glands. Papillae. Trigeminal nerve. Mandible.
The trigeminal nerve is also known as the fifth cranial nerve. This nerve is also involved with the condition known as TMJ.
48
What is Not a mode of transmission for infectious disease? Direct contact. Indirect contact. Barrier. Inhalation.
A barrier is used to prevent the transmission of diseases. The other answers are modes of transportation.
49
During a four-handed dentistry procedure, the assistant should be seated in which of the following ways? With legs perpendicular to the patient's body. With legs parallel to the patient's body. Behind the patient's head. Next to the operator.
The assistant should be seated opposite the operator, with legs parallel to the long axis of the patient's body. Stool height may need to be adjusted for the best line of sight.
50
Sealants should be applied: Thickly especially in grooves. Thinly and evenly. Thinner on the sides, thicker on the occlusal surface. Thicker on the sides, thinner on the occlusal surface.
Sealants should be applied thinly and evenly. Thickly applied sealant is incorrect application of the material.
51
It is important to understand the label for a hazardous chemical. Red means: Special hazards. Health. Instability. Flammability.
A red label indicates high probability the product is a hazardous chemical. This product is highly flammable and possibly combustible if heated.
52
Types of sealant used include all of the following EXCEPT for: Filled. Unfilled. Fluoride-releasing. Ceramic.
Ceramic sealants are not a type of sealant. Filled, unfilled, and a fluoride-releasing resin are more commonly used.
53
What can be done if a surface is inadvertently etched? It can be polished to repair the surface. A chemical can be applied to remove the acid. A chemical can be applied to bond with the acid. It can be cleaned.
If some etchant inadvertently removes enamel from an undesired area, that area can be repaired. The mistake can usually be polished to repair the surface of the tooth.
54
What is NOT a method to treat a patient who appears to have a stroke during a procedure? Epinephrine. Elevate head. Perform CPR. Administer oxygen.
Epinephrine is typically used when a patient has angina. The other answers are all used in a stroke emergency until EMS can arrive.
55
The soft tissue that covers the cervical portions of the teeth and the surrounding alveolar bone is known as the Periodontial ligament. Occlusion. Gingiva. Cementum.
Gingiva is the soft tissue that covers the cervical portion of the tooth. It is composed of free gingiva and attached gingiva.
56
The MOST important reason sealants should NOT be placed on partially erupted teeth because: The gingival is not exposed. The lingual surface may not be exposed. The buccal surface might not be exposed. The entire crown might not be exposed.
Sealants must wait until the entire upper surface of the tooth is expose. If the crown is not fully exposed, the sealant may not be placed correctly. A partially erupted tooth also may be covered by gingiva.
57
The patient is concerned about risks involved with the etchant? The BEST response is: The etchant step is safe when properly performed. Etchant can cause severe burns to the patient and the orthodontic team. Etchant can severely irritate the skin and eyes. The etchant material is a non-harmful chemical.
In response to a patient's inquiry about the safety of etchant, the BEST response is to ensure the patient that the step is safe. Etchant material is caustic. However, the etchant step is safe when performed properly.
58
Self-curing acrylic resin is NOT used with which appliance? Braces. Retainers. Dentures. Partials.
Self-curing acrylic resin is not used in braces. The brackets and bands are bonded to the teeth using a composite light-cured resin or glass ionomer cement.
59
All but which of the following are appropriate interventions for a patient who has developed dry socket? Packing the socket with a sedative dressing soaked with oil of cloves. Taking oral analgesics such as Tylenol. Rinsing the socket to remove debris. Taking IV antibiotics.
IV antibiotic therapy is not necessary for dry socket, as the condition is self-limiting. Patients may find relief by having the socket rinsed and packed with a sedative dressing. Oral analgesics, either OTC or prescription, are also helpful.
60
Reamers, broaches, and files are all used in which of the following procedures? Dental implants. Root canal. Root planing. Gingivectomy.
Reamers, broaches, and files are all used in root canal. They are used to widen the canal, remove necrotic tissue, and smooth the sides of the canal.
61
When rinsing the etchant material off the teeth, what other action should the clinician take? Using a suction tip. Using air. Placing cotton rolls. Applying sealant.
While rinsing etchant from the surfaces, the water should be suctioned at the same time. The teeth should be rinsed, and then a dry environment created.
62
The assistant's job during bonding of the brackets includes: Giving the orthodontist the resin material to mix. Keeping the tooth surface dry until the resin is applied. Acid-etching the teeth. Applying brackets with resin to the teeth.
The duties of the assistant during bonding of the brackets include mixing the material and keeping the tooth surface dry. The orthodontist will acid-etch the teeth. The orthodontist also applies the brackets to the teeth.
63
Which of the following is the final step in preparing a cavity for restoration? Drying the cavity thoroughly with air. Irrigating the cavity. Aspirating debris from the cavity. Removing all decay from the cavity.
After the decay is removed, the cavity must be thoroughly irrigated and aspirated. It is then dried thoroughly, so that restoration can proceed.
64
After removing the fluoride trays upon application completion, which of the following is true? Excess fluoride and saliva should be removed with the saliva ejector. The patient should swish the mouth vigorously and then spit. The patient should be given a drink of very cold water. The patient should spit out any excess fluoride.
After removing the trays, the patient should be instructed not to rinse or swallow. Promptly insert the saliva injector. This will help remove excess saliva and fluoride, increasing patient comfort.
65
Which size surgical scalpel would you choose for incision and drainage? #15 #11 #4 #9
A #11 surgical scalpel is used for incision and drainage. Also known as surgical knives, scalpels are designed to excise soft tissue with the least amount of trauma.
66
Which of the following is NOT true of local anesthesia? The bitter taste of the anesthetics require frequent irrigation of the injection site. Most procedures require 2-3 injections of local anesthesia. Topic anesthetic may be applied prior to injections. The patient will have little to no memory of the procedure
Local anesthesia does not depress consciousness or memory of the procedure. It provides local pain relief through numbing. Most procedures require 2-3 injections.
67
Sealants are indicated for primary teeth. Primary teeth are also sometimes called: Baby teeth. Real teeth. Big teeth. Permanent teeth.
Primary teeth are the deciduous teeth. These are the first set of teeth to appear. Since they erupt when a person is still a baby, sometimes they are called baby teeth.
68
The purpose of an aspirating syringe is which of the following? To remove debris from a treatment site. To minimize the pain of injections. To allow the operator to see if anesthesia is being injected into the bloodstream. To irrigate a treatment site.
An aspirating syringe allows the operator to check for injections into the bloodstream. Because injecting anesthetics into the bloodstream can be dangerous or fatal, this is a key step in dental procedures.
69
A person should brush at least: Once every two days. Twice a day. Three times a day. Four times a day.
To prevent caries, a person should brush and floss routinely. Individuals should brush at least twice daily and floss at least once a day. Brushing between meals is even more effective.
70
What is the risk of performing a dental procedure on a woman in her first trimester of pregnancy? None. Miscarriage. Infection. Premature labor.
Elective dentistry is not recommended for most pregnant women. There is a risk of miscarriage in the first trimester. The third trimester increases the risk of premature labor. The best time to perform elective dental treatment during pregnancy is in the second trimester, weeks 14 through 20.
71
Which patient may require sealants? Undergoing orthodontic treatment. Undergoing routine scaling and polishing. Receiving restorative work such as crowns. Receiving dentures or partials.
Sealants are highly appropriate for patients undergoing orthodontic treatment (braces). Braces can make it difficult to reach and properly clean the teeth. Sealants can protect the chewing surface during this period when the teeth are more difficult to clean.
72
When taking a lower alganate impression, which position should the assistant be in? Behind the patient. In front of the patient. To the left of the patient, at about 8 o'clock. In front of and slightly to the right of the patient.
Lower impressions are taken from in front of the patient. This allows the assistant to smoothly insert the algenate and also to hold the tray while the impression is made.
73
Which of the following would you use to polish a composite restoration? Diamond disc. Sandpaper disc. Composite disc. T-ball burnisher.
Composite discs are made of a synthetic material impregnated with grit. They are used to polish, refine, and contour composite restorations.
74
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.
A face shield and respirator, goggles and rubber gloves with long cuffs have proven effective in limiting ones exposure to mercury. Mercury can be inhaled and absorbed through the skin.
75
Which of the following is NOT a type of explorer? Pigtail. Beavertail. Orban. Shepherd's hook.
Explorers come in a variety of shapes. These include pigtail, Orban (or #17), right angle, and shepherd's hook. Explorers are part of the basic dental exam set up.
76
When should instruments be wrapped? When dry. Before sterilization. When wet. After sterilization.
Instruments need to be wrapped before sterilization. This will protect from contaminants. It is effective if the correct wrapping is used.
77
What does the number "1" in the red section of the chemical hazard label represent?
The National Fire Protection Association has created a color coded system that describes particular chemicals being used. The system explains the flammability, reactivity and health hazards associated with the chemical, as well as any special hazards. Red = Flammability. Yellow = Reactivity. Blue= Health. White = Special hazards (e.g. water reactive or oxidizing agent). The degree of each hazard is noted with a number 0-4. 0 = Minimal. 1 = Slight. 2 = Moderate. 3 = Serious. 4 = Extreme.
78
An artificial tooth suspended from a retainer is known as which of the following? Matrix. Plugger. Pontic. Crown.
Pontics are artificial teeth suspended from a retainer. They take the place of a broken crown.
79
Items being disposed of are placed in a secondary container. What is the appropriate action? Do not use a secondary container. Label secondary container. Sterilize the primary container. Label primary container.
Containers of disposed items always need to be labeled. It should be labeled at the same time as the container changes.
80
Inner bow of a headgear appliances is inserted: In the molar band headgear tube. In the bracket slots. In a coiled spring. Over the bracket wings.
The headgear appliance has two bows. The inner bow inserts to in the molar band headgear tube. The outer bow connects to the head.
81
FINE plaster of Paris has all of the following characteristics EXCEPT for: It is used for making highly accurate models. It is very strong. It has a rapid setting time. It produces an exceptionally white model.
Fine plaster of Paris has slower setting time. It is very strong and makes an exceptionally accurate model. It is produces a very white model.
82
A right-handed hygienist assisting a left-handed dentist will be located where in relation to the patient? On the operator's left. On the operator's right. Directly across from the operator. Directly behind the operator.
The assistant is always on the opposite side of the patient from the operator's working hand. This means making instrument transfers with the left hand. The handedness of the assistant makes no difference in placement.
83
For which of the following procedures would you choose a hatchet? To separate a tooth from the alveolar bone. To refine cavity walls. To remove very deep calculus deposits. To scale calculus from beneath the gingiva.
Hatchets are typically double-ended, with a bevel on one end and a cutting edge on the other. They are used to refine cavity walls and to obtain retention in cavity preparations.
84
When preparing a tooth for restoration, which of the following is the appropriate FIRST step? Mixing the cement. Smoothing rough edges. Removing decay. Taking the impression.
Decayed matter must be removed first in order to determine what type of restoration will be needed. Impressions can then be taken to determine the extent of restoration and type of prosthesis needed.
85
One reason sealants are indicated for fissures is because: Fissures are too wide to properly clean. Fissures can be too narrow even for a tooth brush to reach. Fissures can be too flat. Fissures can be too superficial.
The fissures of teeth are very difficult to thoroughly clean. Fissures can be too narrow even for the fine bristles of a tooth brush to reach. So, sealants provide extra help in maintaining this area.
86
Which of the following is the SMALLEST size of tapered fissure straight bur? 169 556 1 ½
tapered fissure straight burs are used to form the divergent walls of cavity preparations. They are also use to place retention grooves in preparations. These instruments come in a variety of sizes, with 169 being the smallest and 172 being the largest.
87
A patient experiences a seizure during an exam. What should be done first? Restrain the patient. Call EMS. Remove items from patient's mouth. Place in the recovery position.
When a patient has a seizure, first remove everything from his or her mouth. Next, clear space around the patient. Never restrain someone having a seizure.
88
You are preparing an instrument tray for an amalgam procedure. Which of the following is NOT part of the instruments and materials needed? Burs. Excavators. Mixing pad. Surgical knife.
Surgical knives are used with composite fillings, but not with amalgam restorations. You will need burs, a pair of excavators, a mixing pad, base material, and amalgam carrier for an amalgam restoration. Prepared matrix and wooden wedges are also standard, along with paper points.
89
Which type of floss is less likely to shred on a patient who has tight contact points? PTFE floss. Waxed nylon floss. Unwaxed nylon floss. Flavored floss.
Both PTFE floss and nylon floss are effective at removing plaque and debris. PTFE floss is a single strand and nylon is multiple strands. The nylon floss is more likely to shred on patients.
90
A patient indicates a sensitivity to bis-GMA. Which sealant is contraindicated? Quartz/silica filled. Polyurethane. BPA resin. Methacrylate.
Many chemical compounds have multiple abbreviations. BPA and bis-GMA are the same compound bisphenol-A-glycidyl. A patient allergic to bis-GMA should not receive a sealant containing this compound.
91
The goal of a sealant is to: Protect the tooth from damaging bacteria. Aid in tooth development. Help strengthen the teeth. Provide gum protection.
The ULTIMATE goal of sealants is to protect teeth from damaging bacteria that causes tooth decay. Bacteria that's allowed to accumulate in the pits and fissures eventually wear through the enamel and begin destroy the actual tooth. Sealants cover fissures and pits and protect the tooth from decay or caries.
92
What is not a source of B vitamins? Leafy greens. Eggs. Brown rice. White flour.
Processed food is not a good source of B vitamins. B vitamins deficiency is tied to oral problems. Swelling and inflammation are more likely if there is a deficiency.
93
During initial alignment, archwires apply what kind of forces? Gentle. Moderate. Strong. Very strong.
Initially, archwires are very thin. Treatment begins with applying gentle forces. Constant, gradual change occurs through the treatment as a result of this approach.
94
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.
Dental dam frames can be either oval or U-shaped. They may also be made of metal or plastic. Metal U-shaped frames are known as Young frames
95
A patient is unconscious with an airway obstruction. What should be done if it cannot be removed with finger scoop and rescue breathing is ineffective? CPR. Heimlich maneuver. Administer prophylactic. Chest thrust maneuver.
A chest thrust maneuver uses upward thrusts at the abdomen. This is done three times in a sequence. The chest thrust maneuver is used to unblock an airway when the patient is unconscious.
96
Etchant does what to the tooth surface through chemical means: Abrades. Polishes. Smoothes. Evens.
Etchant abrades the tooth surface through chemical means. Abrasion can occur mechanically or physically. An example of physical abrasion would be to use an air abrasion or a rough-bristled brush.
97
You have just placed cotton padding in the mouth of an oral surgery patient after an extraction. How long should you tell the patient to keep the cotton in place? 24 hours. 1 hour. 5 minutes. 30 minutes.
Patients should be instructed to leave the dressing in place for 30 minutes to encourage blood clot formation. Removing the cotton too early can dislodge the clot and lead to increased bleeding,
98
How long should a patient remove his or her dentures each day? 8 hours. 12 hours. 4 hours. 1 hour.
How long should a patient remove his or her dentures each day? 8 hours. 12 hours. 4 hours. 1 hour.
99
Which tooth is MOST LIKELY to receive a sealant? Lower left third molar. Lower left lateral. Lower right cuspid. Lower left second molar.
Molars and pre-molars are recommended for sealants. First and second molars are sealed more often than third molars. Third molars (wisdom teeth) are sometimes removed. So, the lower left second molar would MOST likely receive the sealant.
100
The technique for applying etchant and sealant: Changed in recent years. Has remained the same over many years. Is lengthy. Is complicated.
The procedures for etching and sealant teeth has remained essentially the same over many years. Only a few minor changes regarding etching have changed over the years. For instance, clinical studies now show that teeth do not have to etchant on them for as long as previously thought.

EFDA Practice Exam Questions (1 decks)

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