CDA Certified Dental Assistant

Approved & Edited by ProProfs Editorial Team
The editorial team at ProProfs Quizzes consists of a select group of subject experts, trivia writers, and quiz masters who have authored over 10,000 quizzes taken by more than 100 million users. This team includes our in-house seasoned quiz moderators and subject matter experts. Our editorial experts, spread across the world, are rigorously trained using our comprehensive guidelines to ensure that you receive the highest quality quizzes.
Learn about Our Editorial Process
| By Weimer
W
Weimer
Community Contributor
Quizzes Created: 1 | Total Attempts: 2,373
Questions: 40 | Attempts: 2,381

SettingsSettingsSettings
CDA Certified Dental Assistant - Quiz

As you might expect, a Certified Dental Assistant is someone whom has been properly trained to the highest calibre possible in order for them to assist competently in the provision of dental care. Are you looking at getting your certification? Take the following quiz and see if you’re able for it.


Questions and Answers
  • 1. 

    Large amounts of salicylates (sprin) are MOST likely to affect a patient's

    • A.

      Response to local anesthetics

    • B.

      Bleeding and clotting time

    • C.

      Tolerance to general anesthesia

    • D.

      Sensitivity to antibiotics

    Correct Answer
    B. Bleeding and clotting time
    Explanation
    Large amounts of salicylates (such as aspirin) are known to have an anticoagulant effect, which means they can interfere with the normal clotting process in the body. This can lead to an increased risk of bleeding and affect the clotting time of a patient. Therefore, large amounts of salicylates are most likely to affect a patient's bleeding and clotting time.

    Rate this question:

  • 2. 

    If an error has been made on a clinical record entry, which of the following should be done?

    • A.

      Erase the error and rewrite the entry correctly

    • B.

      Mark through the incorrect entry so that it cannot re read

    • C.

      Draw one line through the incorrect entry and initial and write the correct entry below

    • D.

      Circle the incorrect entry in red

    • E.

      Do nothing to the incorrect entry; just rewrite the entry correctly

    Correct Answer
    C. Draw one line through the incorrect entry and initial and write the correct entry below
    Explanation
    When an error is made on a clinical record entry, the correct procedure is to draw one line through the incorrect entry, initial it, and then write the correct entry below. This method ensures that the incorrect entry is still visible, but clearly marked as an error. By initialing the correction, it provides accountability for the change made. Rewriting the entry correctly helps maintain the accuracy and integrity of the clinical record.

    Rate this question:

  • 3. 

    What is considered an "average" pulse range for an adult at rest

    • A.

      40-60 beats per minute

    • B.

      61-8- beats per minute

    • C.

      81-89 beats per minute

    • D.

      90-100 beats per minute

    Correct Answer
    B. 61-8- beats per minute
  • 4. 

    When assisting during oral surgery the dental assistant should NEVER

    • A.

      Wipe oral tissue with gauze

    • B.

      Blow air to clear the socket

    • C.

      Flush the area with water

    • D.

      Suction the anesthetized area

    Correct Answer
    B. Blow air to clear the socket
    Explanation
    When assisting during oral surgery, blowing air to clear the socket should never be done. This is because blowing air can dislodge blood clots or other healing tissues from the socket, which can lead to complications such as dry socket or delayed healing. It is important to follow proper protocols and guidelines to ensure the safety and success of the oral surgery procedure.

    Rate this question:

  • 5. 

    Which of the following is a characteristic of aggressive brushing

    • A.

      Abrasion

    • B.

      Attrition

    • C.

      Abfraction

    • D.

      Erosion

    Correct Answer
    A. Abrasion
    Explanation
    Aggressive brushing can lead to abrasion, which is the wearing away of tooth enamel and dentin caused by excessive force and friction. This can occur when using a hard-bristled toothbrush, applying too much pressure while brushing, or using a scrubbing motion. Abrasion can result in tooth sensitivity, receding gums, and an increased risk of tooth decay.

    Rate this question:

  • 6. 

    When measuring blood pressure, the patient should be seated with the arm in which position

    • A.

      At rest with the arm and hand extended down

    • B.

      Slightly flexed, with forearm supported at heard level

    • C.

      Rigid with arm straight out from body

    • D.

      Position of arm not important

    Correct Answer
    B. Slightly flexed, with forearm supported at heard level
    Explanation
    When measuring blood pressure, it is important for the patient to be seated with the arm slightly flexed and the forearm supported at heart level. This position allows for accurate measurement of blood pressure as it ensures that the arm is at the same level as the heart, reducing the effects of gravity on blood flow. Additionally, the slight flexion of the arm helps to relax the muscles and allows for a more comfortable and stable position during the measurement.

    Rate this question:

  • 7. 

    Control of saliva from the perotid duct can be accomplished by placing a cotton roll

    • A.

      On the lingual side of the mand. arch under the tongue

    • B.

      In the vestibule, opposite of the max second molar

    • C.

      In the vestibule, opposite of the mand second molar

    • D.

      In the vestible, opposite of the max anterior teeth

    Correct Answer
    B. In the vestibule, opposite of the max second molar
    Explanation
    Placing a cotton roll in the vestibule, opposite of the max second molar can help control saliva from the parotid duct. The parotid duct, also known as Stensen's duct, is responsible for draining saliva from the parotid gland into the mouth. By placing a cotton roll in the vestibule, opposite of the max second molar, it can help absorb and control the flow of saliva from the parotid duct, preventing excessive saliva from interfering with dental procedures or causing discomfort for the patient.

    Rate this question:

  • 8. 

    For oral evacuation during a max anterior facial preparation, the evacuator tip is placed

    • A.

      To the lingual of the tooth being prepared

    • B.

      Tp the facial of the tooth being prepared

    • C.

      Max right posterior of the tooth being prepared

    • D.

      Mand right posterior to the tooth being prepared

    Correct Answer
    A. To the lingual of the tooth being prepared
    Explanation
    During a maxillary anterior facial preparation, the evacuator tip is placed to the lingual of the tooth being prepared. This is because the lingual side of the tooth is closer to the oral cavity, allowing for better suction and evacuation of water, saliva, and debris during the procedure. Placing the evacuator tip to the facial side, max right posterior, or mand right posterior of the tooth being prepared would not be as effective in removing the fluids and debris from the oral cavity.

    Rate this question:

  • 9. 

    Which of the following conditions may occur if excess cement is NOT removed from the cervical margin after cementation of a crown

    • A.

      Lateral movement of the adjacent tooth

    • B.

      Inflamation of interdental papille

    • C.

      Fracture of the cervical margin of the preparation

    • D.

      Increase occurrence of subgingival carries

    Correct Answer
    B. Inflamation of interdental papille
    Explanation
    If excess cement is not removed from the cervical margin after cementation of a crown, it can lead to inflammation of the interdental papilla. The interdental papilla is the triangular gum tissue that fills the space between two adjacent teeth. Excess cement can get trapped in this area and cause irritation and inflammation, leading to redness, swelling, and discomfort. It is important to remove any excess cement to prevent this condition and maintain the health of the interdental papilla.

    Rate this question:

  • 10. 

    In selecting an impression tray for a preliminary max. impression, the tray should extend posteriorly

    • A.

      Behind the tuberosity

    • B.

      Beyond the humular process

    • C.

      To the junction of the hard and soft palates

    • D.

      To the faucus

    Correct Answer
    A. Behind the tuberosity
    Explanation
    The impression tray for a preliminary maxillary impression should extend behind the tuberosity. This is because the tuberosity is the posterior extension of the maxilla, and extending the tray behind it ensures that the impression captures the entire posterior region of the maxilla. This is important for accurately recording the shape and dimensions of the maxillary arch, which is necessary for creating well-fitting dental prostheses or appliances.

    Rate this question:

  • 11. 

    Chairside assisting DURING the anesthesia injection usually incluse which of the following responsibilities

    • A.

      Applying topical anesthetic to injection site

    • B.

      Passing and receiving the syringe

    • C.

      Injecting anesthetic

    • D.

      Administering propylactic antibiotic

    Correct Answer
    B. Passing and receiving the syringe
    Explanation
    During the anesthesia injection, chairside assisting typically includes responsibilities such as applying topical anesthetic to the injection site, passing and receiving the syringe, and administering the anesthetic. However, administering prophylactic antibiotics is not typically a responsibility of the chairside assistant during anesthesia injection.

    Rate this question:

  • 12. 

    Nitrous oxide analgesia is NOT usually recommended for patiants who

    • A.

      Have nasal congestion

    • B.

      Are apprehensive

    • C.

      Are obese

    • D.

      Have a sensitive gag reflex

    Correct Answer
    A. Have nasal congestion
    Explanation
    Nitrous oxide analgesia is not usually recommended for patients who have nasal congestion because nitrous oxide is inhaled through the nose. Nasal congestion can obstruct the airway and limit the effectiveness of the analgesia. It is important for patients to have clear nasal passages to ensure proper administration and absorption of the nitrous oxide.

    Rate this question:

  • 13. 

    Which of the following statements is correct regarding the light curing of composite

    • A.

      Curing for a slightly longer time is preferred to under curing

    • B.

      If using a shield, addition time is required

    • C.

      The amount of the time needed will affect the shade

    • D.

      Humidity and room temperature weill affect the amount of time needed

    Correct Answer
    A. Curing for a slightly longer time is preferred to under curing
    Explanation
    Curing for a slightly longer time is preferred to under curing because under curing can result in incomplete polymerization of the composite material, leading to reduced strength and durability. On the other hand, slightly longer curing ensures complete polymerization, resulting in better mechanical properties and longevity of the restoration.

    Rate this question:

  • 14. 

    Which of the following materials is MOST OFTEN used for a temporary restoration

    • A.

      Glass ionomer

    • B.

      Calcium hydroxide

    • C.

      Zinc oxide-eugenol

    • D.

      Polycarboxylate

    Correct Answer
    C. Zinc oxide-eugenol
    Explanation
    Zinc oxide-eugenol is most often used for temporary restorations. This material is commonly used because it has good thermal insulation properties and provides a protective barrier for the tooth. It is also easy to manipulate and remove when the permanent restoration is ready to be placed. Additionally, zinc oxide-eugenol has antimicrobial properties, which can help prevent infection during the temporary restoration period.

    Rate this question:

  • 15. 

    Why would wax be placed along the facial periphery of the max impression tray

    • A.

      To acheive greater detail of the hard palate

    • B.

      Te reduce patients gagging

    • C.

      To assure registration of tuberosities

    • D.

      To obtain registration of the mucobuccal attachments

    Correct Answer
    D. To obtain registration of the mucobuccal attachments
    Explanation
    Wax is placed along the facial periphery of the max impression tray to obtain registration of the mucobuccal attachments. This is important because the mucobuccal attachments are the areas where the oral mucosa attaches to the underlying bone and muscles. By obtaining registration of these attachments, the impression can accurately capture the contours and dimensions of the oral tissues, ensuring a proper fit of prosthetic devices such as dentures or crowns.

    Rate this question:

  • 16. 

    Which of the following conditions should exist in the surgical site before a periodontal dressing is places EXCEPT

    • A.

      Bleeding under control

    • B.

      Surgical site thouroughly ittigated

    • C.

      Teeth and tissue free of excessice oral fluids

    • D.

      All sutures removed

    Correct Answer
    D. All sutures removed
    Explanation
    Before a periodontal dressing is placed, all sutures should not be removed. Sutures are used to hold the surgical site together and promote healing. Removing them before placing the dressing would compromise the integrity of the site and hinder proper healing. Therefore, the correct answer is "all sutures removed."

    Rate this question:

  • 17. 

    Which gypsum product requires the smallest water/powder ratio

    • A.

      Denal stone

    • B.

      Die stone

    • C.

      Dental plaster

    Correct Answer
    B. Die stone
    Explanation
    Die stone requires the smallest water/powder ratio compared to dental stone and dental plaster. Die stone is a type of gypsum product that is specifically formulated to have a high density and low porosity, making it ideal for creating accurate and detailed dental models and dies. The smaller water/powder ratio means that less water is needed to mix with the powder, resulting in a denser and stronger final product. This is important for achieving precise and durable dental restorations.

    Rate this question:

  • 18. 

    Which effect could cola drinks have on tooth enamal

    • A.

      Attrition

    • B.

      Hypercalcification

    • C.

      Erosion

    • D.

      Hypoplasia

    Correct Answer
    C. Erosion
    Explanation
    Cola drinks can have an erosive effect on tooth enamel. This means that over time, the acidic nature of these drinks can wear away the protective layer of the teeth, leading to enamel erosion. This can result in tooth sensitivity, discoloration, and an increased risk of cavities. It is important to limit the consumption of acidic beverages and maintain good oral hygiene to protect the enamel from erosion.

    Rate this question:

  • 19. 

    When should pit and fissure sealants be places in order to be MOST effective

    • A.

      After eruption of entire occlusal surface

    • B.

      Prior to eruption or permanent dentition

    • C.

      After proximal surfaces are carious

    • D.

      After placement of restorations

    • E.

      After all permanent teeth are erupted

    Correct Answer
    A. After eruption of entire occlusal surface
    Explanation
    Pit and fissure sealants should be placed after the eruption of the entire occlusal surface in order to be most effective. This is because the sealants are applied to the pits and fissures on the chewing surfaces of the teeth to prevent decay. If the sealants are placed before the eruption of the entire occlusal surface, there is a risk of trapping bacteria underneath the sealant, which can lead to decay. Therefore, waiting until the eruption of the entire occlusal surface ensures that the sealant can fully cover and protect the tooth surface.

    Rate this question:

  • 20. 

    If swallowed, flouride may cause

    • A.

      Tooth discoloration

    • B.

      Nausea and vomiting

    • C.

      Permanent damage to the stomach lining

    • D.

      Loss of taste sensation

    Correct Answer
    B. Nausea and vomiting
    Explanation
    When fluoride is swallowed, it can lead to nausea and vomiting. This is because fluoride is a toxic substance and ingesting it in large amounts can irritate the stomach lining, causing these symptoms. While tooth discoloration and loss of taste sensation can also occur, they are not as immediate or severe as nausea and vomiting. Permanent damage to the stomach lining is not a common side effect of swallowing fluoride, making it an incorrect answer.

    Rate this question:

  • 21. 

    Plaque is most likely to accumulate in which of the following areas of the dentition

    • A.

      Proximal spaces

    • B.

      Broad surfaces

    • C.

      Acclusal surfaces

    • D.

      Incisal surfaces

    Correct Answer
    A. Proximal spaces
    Explanation
    Plaque is most likely to accumulate in the proximal spaces of the dentition. Proximal spaces refer to the areas between adjacent teeth. These spaces are often difficult to clean properly, especially with regular brushing, which makes them more prone to plaque buildup. Plaque is a sticky film of bacteria that forms on the teeth and can lead to tooth decay and gum disease if not removed regularly. Therefore, it is important to pay extra attention to cleaning the proximal spaces to prevent plaque accumulation.

    Rate this question:

  • 22. 

    In combination of which of the folliwing techniques whill most effectivelt REMOVE plaque

    • A.

      Brushing, water irrigation, flossing

    • B.

      Brushing, water irrigation

    • C.

      Brushing, flossing

    • D.

      Water irigation, mouthwash

    • E.

      Brushing, water irrigation, flossing, mouthwash

    Correct Answer
    B. Brushing, water irrigation
    Explanation
    Brushing and water irrigation are both effective techniques for removing plaque. Brushing helps to physically remove plaque from the teeth and gums, while water irrigation uses a stream of water to flush away plaque and debris from hard-to-reach areas. By combining these two techniques, plaque can be more effectively removed, as they target different areas and provide complementary benefits. Flossing is also effective for plaque removal, but it is not mentioned in the correct answer. Mouthwash may help to reduce plaque, but it is not as effective as brushing and water irrigation.

    Rate this question:

  • 23. 

    Which of the following dietary sdjustments has the greatest impact in controlling dental caries

    • A.

      Increase frequency of food intake

    • B.

      Infrease frequesncy of vitamin intake

    • C.

      Decrease frequency of protein intake

    • D.

      Decrease frequency of carbohydrate intake

    Correct Answer
    D. Decrease frequency of carbohydrate intake
    Explanation
    Decreasing the frequency of carbohydrate intake has the greatest impact in controlling dental caries. Carbohydrates, especially sugars and starches, are the primary food source for the bacteria in the mouth that produce acids. These acids can erode the tooth enamel and lead to the development of dental caries. By reducing the frequency of carbohydrate intake, there is less opportunity for the bacteria to produce acids, thus reducing the risk of dental caries.

    Rate this question:

  • 24. 

    Signs including that cardiac arrest has occured include

    • A.

      Coughing, abscence of breathering, seizure

    • B.

      Caughing, seizure

    • C.

      Abscence of breathing and pulse

    • D.

      Abscence of pulse

    • E.

      Coughing, abscence of breathing, seizure, abscence of pulse

    Correct Answer
    C. Abscence of breathing and pulse
    Explanation
    The correct answer is "absence of breathing and pulse." This is because when a person experiences cardiac arrest, their heart stops beating, causing a lack of blood flow and oxygen to the body. As a result, the person will stop breathing and there will be no pulse. Coughing and seizures may occur in some cases, but the absence of breathing and pulse are the most definitive signs of cardiac arrest.

    Rate this question:

  • 25. 

    If a patient has collapsed, the first thing to do it

    • A.

      Establish level of responsiveness

    • B.

      Call for emergency cart

    • C.

      Establish an airway

    • D.

      Administer oxygen

    Correct Answer
    A. Establish level of responsiveness
    Explanation
    In a situation where a patient has collapsed, it is crucial to first establish the level of responsiveness. This helps determine the severity of the situation and guides further actions. By assessing the patient's responsiveness, such as checking for any signs of consciousness or response to stimuli, medical professionals can quickly determine the appropriate course of action. This step is essential in order to provide the most effective and timely care to the patient.

    Rate this question:

  • 26. 

    In the case of a patient whose tooth has completely avulsed, the DA should instruct the patient to do all of the folowing EXCEPT

    • A.

      Scrub the tooth to remove any bacteria

    • B.

      Place the tooth in the patient's buccal vestibule or under the tongue

    • C.

      Keep the tooth moist in milk or saline

    • D.

      See the dentist immediately

    Correct Answer
    A. Scrub the tooth to remove any bacteria
    Explanation
    The correct answer is to scrub the tooth to remove any bacteria. Scrubbing the tooth can cause damage to the tooth's surface and root, making it less likely to be successfully reimplanted. Instead, the tooth should be handled carefully by the crown and not touched or scrubbed. The patient should place the tooth in the buccal vestibule or under the tongue to keep it moist and prevent it from drying out. They should also see a dentist immediately for proper evaluation and possible reimplantation.

    Rate this question:

  • 27. 

    Signs and symptoms most commonly associated with anaphylctic reaction incluse

    • A.

      Difficulty breathng, cramping, tongue and throat swelling, decrease in blood pressure

    • B.

      Temporary unconsciousness, slight sweating, clammy skin, decrease in blood pressure and pulse rate

    • C.

      Crushing pain in the mid-chest, jaw pain, pain radiating down left arm

    • D.

      Progressive tiredness, slurred speech, decreased mental alertness, coma in final atages

    Correct Answer
    A. Difficulty breathng, cramping, tongue and throat swelling, decrease in blood pressure
    Explanation
    The signs and symptoms most commonly associated with an anaphylactic reaction include difficulty breathing, cramping, tongue and throat swelling, and a decrease in blood pressure. These symptoms indicate a severe allergic reaction, which can be life-threatening if not treated promptly. The difficulty breathing and swelling of the tongue and throat can lead to airway obstruction, while the decrease in blood pressure can cause dizziness and fainting. Prompt medical intervention, such as administering epinephrine and seeking emergency care, is necessary to manage an anaphylactic reaction.

    Rate this question:

  • 28. 

    To ensure adequate extension of the impression when seating the mand impression tray for diagnostic casts, the patient should be instructed to

    • A.

      Elevate the tongue

    • B.

      Drop the chin to the chest

    • C.

      Raise the mandible

    • D.

      Hold their breath

    Correct Answer
    A. Elevate the tongue
    Explanation
    To ensure adequate extension of the impression when seating the mand impression tray for diagnostic casts, the patient should be instructed to elevate the tongue. This is because elevating the tongue helps create more space in the mouth, allowing the impression tray to fully cover the entire surface of the mandible. This ensures that an accurate impression is taken, which is essential for creating precise diagnostic casts.

    Rate this question:

  • 29. 

    Which of the following materials has the shortest shelf life

    • A.

      Needles

    • B.

      Anestitics

    • C.

      Nonimpregnated retraction cord

    • D.

      Sticky wax

    Correct Answer
    B. Anestitics
    Explanation
    Anesthetics have the shortest shelf life compared to the other materials listed. This is because anesthetics, especially local anesthetics, have a limited stability and can degrade over time. Factors such as exposure to light, air, and temperature can accelerate the breakdown of anesthetics, reducing their effectiveness. Therefore, it is important to regularly check the expiration date and discard any expired anesthetics to ensure patient safety and optimal anesthesia during procedures.

    Rate this question:

  • 30. 

    Before an extraction, patients with a histoy of rheumatic heart disease should

    • A.

      Receive an electrocardiogram

    • B.

      Have 2 days of bed rest

    • C.

      Be heart healty

    • D.

      Receive prophylactic antiobiotic therapy

    Correct Answer
    D. Receive prophylactic antiobiotic therapy
    Explanation
    Patients with a history of rheumatic heart disease are at an increased risk of developing infective endocarditis, a serious infection of the heart valves. Therefore, before an extraction, it is important for these patients to receive prophylactic antibiotic therapy. This helps to prevent any potential bacterial infection that may occur during the dental procedure and reduce the risk of infective endocarditis. The other options, such as receiving an electrocardiogram, having bed rest, or being heart healthy, are not specifically recommended for patients with rheumatic heart disease before an extraction.

    Rate this question:

  • 31. 

    To give informed consent, the patient must know all of the following except

    • A.

      Nature of the condition

    • B.

      Alternative treatment plans

    • C.

      Proposed treatment

    • D.

      Risk of denying treatment

    • E.

      Training the dentist has had in performing the recommended procedure

    Correct Answer
    E. Training the dentist has had in performing the recommended procedure
    Explanation
    Informed consent requires the patient to have knowledge about various aspects of their treatment. They should be aware of the nature of their condition, alternative treatment plans, the proposed treatment, and the risks associated with denying treatment. However, the patient does not need to know about the training the dentist has had in performing the recommended procedure. This information is not directly related to the patient's ability to make an informed decision about their treatment.

    Rate this question:

  • 32. 

    A sign of gingivitis may be

    • A.

      Bleeding

    • B.

      Tooth mobility

    • C.

      Increase in sulcular depth

    • D.

      Pointed papillae

    Correct Answer
    A. Bleeding
    Explanation
    Bleeding is a common sign of gingivitis. When the gums become inflamed due to plaque buildup, they can become sensitive and easily irritated. This can lead to bleeding, especially during brushing or flossing. Bleeding gums should not be ignored as they may indicate the presence of gum disease. It is important to maintain good oral hygiene and visit a dentist regularly to prevent and treat gingivitis.

    Rate this question:

  • 33. 

    In a patient with temporomandibular joint disorder, the grating sound heard within the joint is called

    • A.

      Crepitus

    • B.

      Hypomobility

    • C.

      Myofacial dysfunction

    • D.

      Trismus

    Correct Answer
    A. Crepitus
    Explanation
    Crepitus is the correct answer because it refers to the grating sound heard within the temporomandibular joint in a patient with temporomandibular joint disorder. Crepitus is commonly associated with joint degeneration or damage, and it can be caused by various factors such as arthritis or trauma. Therefore, crepitus accurately describes the grating sound heard in this condition.

    Rate this question:

  • 34. 

    When a right-handed dentist is performing a chairside procedure, the dental assistant is usually positioned in the

    • A.

      11 o'clock position at the same height as the dentist

    • B.

      12 o'clock position at the same height as the dentist

    • C.

      3 o'clock position below the level of the patient's chin

    • D.

      9 o'clock position above the height of the dentist

    Correct Answer
    C. 3 o'clock position below the level of the patient's chin
    Explanation
    In dentistry, the dental assistant is usually positioned at the 3 o'clock position below the level of the patient's chin when a right-handed dentist is performing a chairside procedure. This position allows the dental assistant to have a clear view of the dentist's working area and provides easy access to instruments and materials. Additionally, being below the level of the patient's chin ensures that the dental assistant does not obstruct the dentist's line of sight and allows for efficient communication and coordination between the two.

    Rate this question:

  • 35. 

    Using a pre-pared tray setup is beneficial because it

    • A.

      Requires less storate space

    • B.

      Reduces instrument breakage

    • C.

      Can be assembled for specific procedures

    • D.

      Eliminates the need to sterilize instruments

    Correct Answer
    C. Can be assembled for specific procedures
    Explanation
    A pre-prepared tray setup is beneficial because it can be assembled for specific procedures. This means that all the necessary instruments and tools required for a specific procedure can be organized and readily available in one tray. This saves time and ensures efficiency during the procedure as healthcare professionals do not have to search for or gather the required instruments individually. Additionally, it also reduces the risk of error or missing instruments, leading to better patient care.

    Rate this question:

  • 36. 

    Using the principles of four-handed dentristry, during insturment transfer, which fingers usually retrieve the instrument from the operator?

    • A.

      Thumb and index

    • B.

      Thumb and middle

    • C.

      Ring and pinky

    • D.

      Thumb and pinky

    Correct Answer
    C. Ring and pinky
    Explanation
    During instrument transfer in four-handed dentistry, the fingers that usually retrieve the instrument from the operator are the ring finger and the pinky finger. These two fingers are commonly used because they provide stability and control while holding the instrument securely. The thumb and index finger are typically used for holding other instruments or assisting in the procedure. The thumb and middle finger combination is not commonly used for instrument retrieval in four-handed dentistry.

    Rate this question:

  • 37. 

    Which of the following bur/handpiece combinations would most often be used for removing the carious dentin from the cavity preparation?

    • A.

      #4 bur in a lowspeed handpiece

    • B.

      #56 bur in a highspeed handpiece

    • C.

      #330 bur in a highspeed handpiece

    • D.

      #702 bur in a lowspeed handpiece

    Correct Answer
    A. #4 bur in a lowspeed handpiece
    Explanation
    The #4 bur in a lowspeed handpiece would most often be used for removing carious dentin from the cavity preparation. This combination is commonly used because the #4 bur is a small round bur that is ideal for precise and conservative caries removal. The lowspeed handpiece provides better control and reduces the risk of damaging healthy tooth structure. Using a highspeed handpiece with larger burs like #56, #330, or #702 would be more suitable for bulk removal of tooth structure or for other procedures like crown preparation.

    Rate this question:

  • 38. 

    When assisting a dentist using a highspeed handpiece during tooth preparation the assistant uses the air/water syringe primarily to

    • A.

      Blow debris away from the operating area

    • B.

      Keep the mirror clean

    • C.

      Eliminate the need for a cuspidor

    • D.

      Aid as a coolant for temperature protection

    Correct Answer
    B. Keep the mirror clean
    Explanation
    The assistant uses the air/water syringe primarily to keep the mirror clean. This is because during tooth preparation, the mirror can become foggy or covered in debris, making it difficult for the dentist to see the operating area clearly. By using the air/water syringe, the assistant can spray a combination of air and water onto the mirror, effectively removing any debris or fog and ensuring that the mirror remains clean and clear throughout the procedure.

    Rate this question:

  • 39. 

    When a right-handed dentist is preparing the occlusal of tooth #14, the dental assistant is responsible for retracting the patient's

    • A.

      Lower lip

    • B.

      Left cheek

    • C.

      Tongue

    • D.

      Right cheek

    Correct Answer
    B. Left cheek
    Explanation
    When a right-handed dentist is preparing the occlusal of tooth #14, the dental assistant is responsible for retracting the patient's left cheek. This is because retracting the left cheek provides better visibility and access to the tooth being worked on by the dentist. By retracting the left cheek, the dental assistant ensures that the dentist has a clear view and can work effectively without any obstruction.

    Rate this question:

  • 40. 

    When placing sealants, what will happen to areas of enamel that are inadvertently etched? The enamel will

    • A.

      Remain permanently etched

    • B.

      Remineralize

    • C.

      Be sensitive

    • D.

      Be more subject to decay

    Correct Answer
    B. Remineralize
    Explanation
    When placing sealants, if areas of enamel are inadvertently etched, they will undergo a process called remineralization. This means that the minerals lost during etching will be replenished, and the enamel will regain its strength and integrity. This is a natural process that occurs when minerals such as calcium and phosphate are redeposited onto the tooth surface. Therefore, the enamel will not remain permanently etched, be sensitive, or be more subject to decay.

    Rate this question:

Back to Top Back to top
Advertisement
×

Wait!
Here's an interesting quiz for you.

We have other quizzes matching your interest.