California RDA Written Exam Practice Tests

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  • 1/245 Questions

    What type of mechanical device is used to clean contaminated instruments prior to sterilization? 

    • Hypersonic
    • Ultrasonic 
    • Supersonic
    • Subsonic 
Please wait...
About This Quiz

Being a Registered dental assistant is a rewarding yet tough job. Are you interested in it? If yes, then we encourage you to give our ' California RDA written exam practice test ' a fair try. The questions in this quiz are very informative and will make you think! You are expected to attempt all the questions carefully. All the See morequestions are compulsory. You can take this quiz as a fantastic means to enhance your examination preparations. We wish you all the very best for your exams! All the very best and keep studying!

California RDA Written Exam Practice Tests - Quiz

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  • 2. 

    When should chairside environmental barriers be changed? 

    • After every patient 

    • At the middle of and at the end of each day 

    • At the end of each day 

    • Immediately after they are touched 

    Correct Answer
    A. After every patient 
    Explanation
    Chairside environmental barriers should be changed after every patient to maintain cleanliness and prevent cross-contamination. This ensures that each patient is provided with a clean and hygienic environment during their dental treatment. Changing the barriers regularly helps to minimize the risk of spreading infections and maintains a high standard of infection control in the dental office.

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  • 3. 

    When should chairside environmental barriers be changed? 

    • After every patient 

    • At the middle of and at the end of each day 

    • At the end of each day 

    • Immediately after they are touched 

    Correct Answer
    A. After every patient 
    Explanation
    Chairside environmental barriers should be changed after every patient to maintain cleanliness and prevent the spread of germs. This ensures that each patient is provided with a clean and safe environment during their dental treatment. Changing the barriers regularly helps to minimize the risk of cross-contamination between patients and promotes infection control practices in the dental office.

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  • 4. 

    An FMX can be taken with traditional X-ray film or with the digital radiology technique. 

    • True 

    • False 

    Correct Answer
    A. True 
    Explanation
    An FMX (Full Mouth X-ray) can indeed be taken with traditional X-ray film or with the digital radiology technique. This means that dentists have the option to use either method to capture a comprehensive view of a patient's teeth and surrounding structures. The traditional X-ray film involves exposing the film to X-rays, which creates a physical image that needs to be developed. On the other hand, digital radiology uses digital sensors to capture the X-ray image, which can then be viewed on a computer screen. Both methods have their advantages and disadvantages, but they are both valid options for taking an FMX.

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  • 5. 

    The dentist has a duty to communicate truthfully. The principle expresses the concept that professionals have a duty to be honest and trustworthy in their dealings with people. 

    • True 

    • False 

    Correct Answer
    A. True 
    Explanation
    The principle mentioned in the passage states that dentists have a duty to be honest and trustworthy in their communication with people. This means that they should always communicate truthfully. Therefore, the correct answer is true.

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  • 6. 

    The dentist should always perform a final check of the RDA-performed computer impression prior to the final milling of a permanent restoration. 

    • True 

    • False 

    Correct Answer
    A. True 
    Explanation
    The dentist should always perform a final check of the RDA-performed computer impression prior to the final milling of a permanent restoration. This is important because the dentist needs to ensure that the computer impression is accurate and that there are no errors or discrepancies that could affect the final restoration. By performing a final check, the dentist can identify any issues and make any necessary adjustments before proceeding with the milling process. This helps to ensure that the final restoration will fit properly and meet the patient's needs.

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  • 7. 

    A critical step for healthcare workers in preventing the spread of disease is proper hygiene of one's ____________________ :

    • Hair

    • Eyes

    • Face

    • Hands 

    Correct Answer
    A. Hands 
    Explanation
    A critical step for healthcare workers in preventing the spread of disease is proper hygiene of one's hands. This is because hands are the primary way through which germs and infections are transmitted. Healthcare workers come into contact with various surfaces and patients, making it crucial for them to regularly wash their hands with soap and water or use hand sanitizers to kill any potential pathogens. Proper hand hygiene helps to minimize the risk of spreading infections to both patients and healthcare workers themselves.

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  • 8. 

    The purpose of dental sealants is ______________________ :

    • To prevent decay from spreading

    • To prevent decay in the pits and fissures of teeth

    • To promote good oral health

    • To prevent decay from interproximal spaces

    Correct Answer
    A. To prevent decay in the pits and fissures of teeth
    Explanation
    Dental sealants are a thin protective coating applied to the chewing surfaces of teeth, particularly in the pits and fissures. These areas are more susceptible to decay as they are difficult to clean properly with brushing alone. By sealing these areas, dental sealants create a barrier that prevents bacteria and food particles from getting trapped and causing decay. This helps to protect the teeth and prevent cavities from forming in these vulnerable areas.

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  • 9. 

    Sealants are placed ___________________ :

    • In the pits and fissures 

    • On cingulum's 

    • In grooves 

    • On marginal ridges 

    Correct Answer
    A. In the pits and fissures 
    Explanation
    Sealants are placed in the pits and fissures of teeth to prevent tooth decay. Pits and fissures are the grooves and depressions on the chewing surfaces of teeth where bacteria and food particles can easily get trapped. By placing sealants in these areas, a protective barrier is created that prevents bacteria and food from accumulating, reducing the risk of cavities.

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  • 10. 

    What is the purpose of coronal polishing? 

    • To remove calculus 

    • To remove stains and plaque 

    • To prepare teeth for a restoration 

    • To remove inflamed gingiva 

    Correct Answer
    A. To remove stains and plaque 
    Explanation
    Coronal polishing is a dental procedure performed to remove stains and plaque from the teeth. This is done using a polishing agent and a rotary instrument, which helps to smooth the surface of the teeth and remove any surface stains or plaque buildup. By removing these stains and plaque, coronal polishing helps to improve the appearance of the teeth and maintain oral hygiene. It is not performed to remove calculus, prepare teeth for a restoration, or remove inflamed gingiva.

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  • 11. 

    Which PPE item must be removed before temporarily leaving a patient to retrieve supplies? 

    • Mask 

    • Gloves

    • Protective eyewear 

    • Protective clothing 

    Correct Answer
    A. Gloves
    Explanation
    Gloves must be removed before temporarily leaving a patient to retrieve supplies because gloves can become contaminated during patient care activities. Removing gloves helps prevent the spread of pathogens from one patient to another or to the healthcare worker themselves. Additionally, gloves should be disposed of properly after use to maintain infection control measures.

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  • 12. 

    The term polymerization means to _________________________________ :

    •  cure 

    •  set 

    •  harden 

    • All of the above is correct

    Correct Answer
    A. All of the above is correct
    Explanation
    The term polymerization refers to the process of combining monomers to form a polymer. This process can involve various chemical reactions, such as curing, setting, and hardening, depending on the specific type of polymerization. Therefore, option d, "all of the above is correct," is the correct answer as it encompasses all the possible outcomes of polymerization.

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  • 13. 

    What surface of the posterior tooth would the dentist enter with a rotary bur when opening a canal for root canal therapy? 

    • Occlusal 

    • Facial 

    • Mesial 

    • Incisal 

    Correct Answer
    A. Occlusal 
    Explanation
    The dentist would enter the occlusal surface of the posterior tooth with a rotary bur when opening a canal for root canal therapy. The occlusal surface is the chewing surface of the tooth, and accessing the canal from this surface allows the dentist to remove the infected pulp and clean the root canal properly. This approach provides better visibility and accessibility compared to other surfaces such as facial, mesial, or incisal.

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  • 14. 

    Torn gloves should be replaced _____________________________:

    • As soon as possible 

    • Before entering the lab 

    • After the patient leaves 

    • At the end of the day 

    Correct Answer
    A. As soon as possible 
    Explanation
    Torn gloves should be replaced as soon as possible to ensure the safety and protection of the wearer. Torn gloves can compromise the barrier between the wearer and potentially harmful substances, increasing the risk of contamination or injury. Therefore, it is important to replace torn gloves promptly to maintain a safe and hygienic environment.

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  • 15. 

    When fabricating a provisional it is important to check the mesial and distal contacts. 

    • True 

    • False 

    Correct Answer
    A. True 
    Explanation
    When fabricating a provisional, it is important to check the mesial and distal contacts to ensure that the temporary restoration fits properly and does not interfere with the patient's bite or cause any discomfort. This step is crucial in maintaining the integrity of the adjacent teeth and supporting structures, as well as ensuring the longevity and function of the provisional restoration.

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  • 16. 

    While cleaning contaminated instruments, an assistant receives a percutaneous injury to the finger. The assistant should FIRST _______________________________ :

    • Notify the dentist/employer 

    • Wash hands with soap and water 

    • Wipe puncture with glutaraldehyde 

    • Be evaluated by a physician 

    Correct Answer
    A. Wash hands with soap and water 
    Explanation
    The assistant should FIRST wash their hands with soap and water after receiving a percutaneous injury to the finger. This is important to prevent the spread of any potential contaminants and to reduce the risk of infection.

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  • 17. 

    Which device is used to assist in keeping a patient's mouth open during a restorative procedure? 

    • Rubber dam 

    • Bite block 

    • Cotton pellets 

    • Cotton rolls 

    Correct Answer
    A. Bite block 
    Explanation
    A bite block is a device used to assist in keeping a patient's mouth open during a restorative procedure. It is typically made of a soft material and is placed between the upper and lower teeth to prevent the patient from closing their mouth fully. This allows the dentist or dental assistant to have better access to the oral cavity and perform the necessary procedures without any hindrance.

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  • 18. 

    When using the air/water syringe during dental treatment, which of the following personal protective equipment items is required by the Dental Board regulations? 

    • Gloves, mask, and gown

    • Gloves, mask, gown, and eye protection 

    • Gloves and mask 

    • Gloves, mask, gown, eye protection, and shoe covers 

    Correct Answer
    A. Gloves, mask, gown, and eye protection 
    Explanation
    When using the air/water syringe during dental treatment, the Dental Board regulations require the use of gloves, mask, gown, and eye protection. These personal protective equipment items are necessary to protect the dental professional from potential exposure to pathogens and contaminants present in the patient's oral cavity. Eye protection is particularly important to shield the eyes from splashes or sprays that may occur during the use of the air/water syringe.

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  • 19. 

    According to regulations, protective eyewear, surgical masks, gloves, and gowns or lab coats are :  

    • Personal protective equipment 

    • Infection protection gear 

    • Office protective supplies 

    • Positive protection material 

    Correct Answer
    A. Personal protective equipment 
    Explanation
    According to regulations, protective eyewear, surgical masks, gloves, and gowns or lab coats are classified as personal protective equipment. This equipment is designed to protect individuals from potential hazards or infections in various settings, including medical, laboratory, or industrial environments. It is essential for ensuring the safety and well-being of individuals while performing their duties or tasks that may expose them to potential risks.

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  • 20. 

    A dental assistant who receives an accidental exposure on the skin from a contaminated source should first: 

    • Complete the procedure 

    • Wash the exposed skin with soap and water 

    • Complete an exposure incident report

    • Go the nearest hospital emergency room 

    Correct Answer
    A. Wash the exposed skin with soap and water 
    Explanation
    In the event of an accidental exposure on the skin from a contaminated source, the first step should be to wash the exposed skin with soap and water. This is important to remove any potential contaminants and reduce the risk of infection or further complications. Completing the procedure, completing an exposure incident report, or going to the nearest hospital emergency room may be necessary steps to take after washing the skin, but the immediate priority is to cleanse the area.

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  • 21. 

    ZPC should always be mixed on a cool, glass slab incorporating the powder into the liquid in small, but steady increments. 

    • True 

    • False 

    Correct Answer
    A. True 
    Explanation
    The correct answer is true. ZPC should always be mixed on a cool, glass slab incorporating the powder into the liquid in small, but steady increments. This is because mixing the powder into the liquid gradually ensures that it is evenly distributed and prevents clumping. Mixing on a cool glass slab helps to keep the temperature of the mixture low, which is important for certain materials that may be sensitive to heat.

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  • 22. 

    A poorly placed wedge will create an overhang in the restoration. 

    • True 

    • False 

    Correct Answer
    A. True 
    Explanation
    A poorly placed wedge can create an overhang in the restoration. This is because the wedge is used to create separation between the teeth, allowing for better access and visibility during the restoration process. If the wedge is not placed correctly, it may push the tooth too far, causing an overhang where the restoration does not fit properly. This can lead to discomfort for the patient and potential complications with the restoration.

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  • 23. 

    The ___________________________ provides removal of large amounts of fluid and debris from the patient's mouth.

    • High volume evacuator (HVE)

    • Saliva ejector 

    • High speed handpiece 

    • Air/water syringe 

    Correct Answer
    A. High volume evacuator (HVE)
    Explanation
    The high volume evacuator (HVE) is a dental instrument that is used to remove large amounts of fluid and debris from the patient's mouth. It has a larger diameter and stronger suction power compared to the saliva ejector, making it more effective in removing larger volumes of fluid and debris. The high speed handpiece and air/water syringe are not designed for fluid and debris removal, but for other dental procedures. Therefore, the correct answer is a. high volume evacuator (HVE).

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  • 24. 

    What patient safety precaution(s) should be considered when one is placing sealants? 

    • Keep the etchant off the soft tissue 

    • Use only after the patient has been anesthetized 

    • Have the patient wear eyewear 

    • Both A and C are correct 

    Correct Answer
    A. Both A and C are correct 
    Explanation
    When placing sealants, it is important to consider patient safety precautions. One precaution is to keep the etchant off the soft tissue, as it can cause irritation or damage. Another precaution is to have the patient wear eyewear to protect their eyes from any potential splatter or debris. Therefore, both options A and C are correct as they both address important safety measures to be taken during the placement of sealants.

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  • 25. 

    What is the main cause of sealant failures? 

    • Polymerization 

    • Moisture contamination

    • Deep pits and fissures

    • Occlusion interference 

    Correct Answer
    A. Moisture contamination
    Explanation
    Moisture contamination is the main cause of sealant failures. When moisture gets trapped between the sealant and the surface it is supposed to seal, it can lead to a loss of adhesion and create gaps or cracks in the sealant. This can result in water or other substances penetrating the sealant, causing it to fail in its intended purpose of providing a barrier. Therefore, moisture contamination is a significant factor that can compromise the effectiveness of sealants.

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  • 26. 

    What does the AED provide to the heart? 

    • Oxygen 

    • Jolt of an electrical current 

    • Blood 

    • Heat 

    Correct Answer
    A. Jolt of an electrical current 
    Explanation
    The AED provides a jolt of an electrical current to the heart. This electrical shock is delivered through the chest wall to restore the heart's normal rhythm in the case of a sudden cardiac arrest. The electrical current helps to stimulate the heart muscles and correct any irregularities in its rhythm, allowing it to resume pumping blood effectively.

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  • 27. 

    A surgical mask must be changed ______________________________:

    • After every thirty minutes of wear 

    • After every patient 

    • Only if visibly wet 

    • Only if visibly soiled 

    Correct Answer
    A. After every patient 
    Explanation
    A surgical mask must be changed after every patient because it is designed to protect both the wearer and the patient from potential contamination. Changing the mask after each patient ensures that any potential pathogens or particles that may have been present during the previous encounter are not transferred to the next patient. This practice helps to maintain a clean and safe environment in healthcare settings.

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  • 28. 

    According to the OSHA Bloodborne Pathogens Standard, a contaminated sharps container should be :

    • Leak proof on the bottom only 

    • Punture resistant and see through 

    • Leak-proof, puncture resistant and closeable 

    • Leak proof on the sides only 

    Correct Answer
    A. Leak-proof, puncture resistant and closeable 
    Explanation
    According to the OSHA Bloodborne Pathogens Standard, a contaminated sharps container should be leak-proof, puncture resistant, and closeable. This is important to prevent any leakage or exposure to bloodborne pathogens during the disposal process. The container should be able to contain any fluids or sharps without any risk of leakage. Additionally, it should be puncture resistant to ensure that any sharp objects inside do not puncture through the container and cause injury. Lastly, it should be closeable to securely seal the container and prevent any accidental openings.

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  • 29. 

    What is the more common term for a dental prophylaxis? 

    • Prophy 

    • Sealants 

    • Scaling 

    • Root plaining 

    Correct Answer
    A. Prophy 
    Explanation
    A dental prophylaxis is a professional cleaning of the teeth, usually performed by a dental hygienist. The more common term for this procedure is "prophy." This involves removing plaque and tartar from the teeth and polishing them to remove stains and create a smooth surface. This helps prevent gum disease and tooth decay. Sealants are a different type of dental treatment that involves applying a protective coating to the teeth to prevent cavities. Scaling is a procedure that involves removing plaque and tartar from below the gumline. Root planing is a more extensive cleaning procedure that involves smoothing the roots of the teeth to prevent gum disease.

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  • 30. 

    Who can perform a dental prophylaxis?

    • Dentist

    • Dental assistant 

    • Dental hygienist 

    • Both A and C are correct

    Correct Answer
    A. Both A and C are correct
    Explanation
    Both dentists and dental hygienists can perform a dental prophylaxis. A dental prophylaxis is a professional cleaning procedure that involves the removal of plaque, tartar, and stains from the teeth. Dentists are trained to perform this procedure as part of their overall dental care services. Dental hygienists, on the other hand, specialize in preventive oral care and are specifically trained to perform dental prophylaxis. Therefore, both dentists and dental hygienists are qualified to perform a dental prophylaxis.

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  • 31. 

     It will take some time and training to grow accustom to using an intra-oral camera. 

    • True 

    • False 

    Correct Answer
    A. True 
    Explanation
    The statement suggests that using an intra-oral camera requires time and training to become accustomed to. This implies that it is not something that can be easily mastered or used proficiently right away. Therefore, the answer is true.

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  • 32. 

    The dental assistant has an obligation to enhance professional competency through continuous learning, incorporating new knowledge into daily performance of delegated services. 

    • True 

    • False 

    Correct Answer
    A. True 
    Explanation
    The statement is true because dental assistants have a responsibility to improve their professional skills by continuously learning and applying new knowledge in their daily tasks. This helps them stay updated with the latest advancements and provide better quality care to patients. Continuous learning also allows dental assistants to adapt to changes in the field and enhance their overall competency.

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  • 33. 

     A mylar strip is used as a matrix for anterior composite restorations. 

    • True 

    • False 

    Correct Answer
    A. True 
    Explanation
    A mylar strip is a thin, transparent strip made of mylar material that is commonly used as a matrix or barrier during anterior composite restorations. It is placed between the tooth being restored and the adjacent teeth to create a temporary wall or barrier, ensuring that the composite material is shaped and contoured properly. The mylar strip also helps to prevent the composite material from sticking to the adjacent teeth, making it easier to achieve a smooth and natural-looking restoration. Therefore, the statement that a mylar strip is used as a matrix for anterior composite restorations is true.

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  • 34. 

    The dental specialty that deals with the diagnosis and treatment of disease of supporting tissues is : _______________________________

    • Endodontics 

    • Pediatrics

    • Orthodontics

    • Periodontics 

    Correct Answer
    A. Periodontics 
    Explanation
    Periodontics is the dental specialty that focuses on the diagnosis and treatment of diseases that affect the supporting structures of the teeth, such as the gums, bones, and ligaments. This specialty deals with conditions like gum disease, periodontal infections, and the placement of dental implants. Endodontics, on the other hand, deals with the diagnosis and treatment of diseases of the dental pulp, while pediatrics focuses on dental care for children, and orthodontics deals with the correction of misaligned teeth and jaws. Therefore, the correct answer is d. periodontics.

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  • 35. 

    What is the medical term for fainting? 

    • Stroke 

    • Seizure

    • Syncope 

    • Senile 

    Correct Answer
    A. Syncope 
    Explanation
    Syncope is the medical term for fainting. Fainting is a temporary loss of consciousness caused by a lack of blood flow to the brain. It can be triggered by various factors such as low blood pressure, dehydration, or emotional stress. Syncope is characterized by a sudden onset, a short duration, and spontaneous recovery. It is important to identify the cause of syncope to determine the appropriate treatment and prevent future episodes.

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  • 36. 

    What damage can result from using the prophy angle at high speed? 

    • It can cause frictional heat 

    • It can remove dentin

    • It can cool the tooth 

    • It can etch enamel 

    Correct Answer
    A. It can cause frictional heat 
    Explanation
    Using the prophy angle at high speed can cause frictional heat. This is because the high speed generates heat due to the friction between the prophy angle and the tooth surface. This heat can potentially damage the tooth structure and surrounding tissues if not controlled properly.

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  • 37. 

    The correct steps to are when a glove rips or tears during a procedure are ______________________________:

    • Wash the glove, dry the glove, and continue the procedure 

    • Disinfect glove, dry glove, and continue with procedure 

    • Remove the glove and immediately place fresh gloves 

    • Remove the glove, wash and dry hands, and place on new gloves 

    Correct Answer
    A. Remove the glove, wash and dry hands, and place on new gloves 
  • 38. 

    When a product is dispensed or stored in a non-original container, the item must be ____________________________________:

    • Appropriately tagged 

    • Appropriately tagged and labeled 

    • Appropriately stored with warning labels 

    • Appropriately tagged and labeled with warnings for care and use 

    Correct Answer
    A. Appropriately tagged and labeled with warnings for care and use 
    Explanation
    When a product is dispensed or stored in a non-original container, it is important for the item to be appropriately tagged and labeled with warnings for care and use. This ensures that anyone handling or using the product is aware of any specific instructions or precautions that need to be followed. Proper labeling and tagging help to prevent accidents, misuse, or confusion regarding the product's storage, handling, or usage.

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  • 39. 

    Instruments with the greatest risk of transmitting infection are __________________________________:

    • Semi-critical instruments 

    • Noncritical instruments 

    • Secondary instruments 

    • Critical instruments

    Correct Answer
    A. Critical instruments
    Explanation
    Critical instruments are those that come into direct contact with sterile tissue or the vascular system. These instruments have the highest risk of transmitting infection because they penetrate the skin or mucous membranes, increasing the chances of introducing pathogens into the body. Examples of critical instruments include surgical instruments, needles, and scalpels. Proper sterilization and handling of critical instruments are crucial to prevent the transmission of infections in healthcare settings.

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  • 40. 

    Indirect vision is the process of using a mouth mirror for vision in the oral cavity. 

    • True 

    • False 

    Correct Answer
    A. True 
    Explanation
    Indirect vision refers to the technique of using a mouth mirror to visualize areas in the oral cavity that are not directly visible. By reflecting light and redirecting the line of sight, the mirror allows dentists to see areas that would otherwise be difficult to view. This technique is commonly used in dental procedures to improve visibility and access to different parts of the mouth. Therefore, the statement that indirect vision involves using a mouth mirror for vision in the oral cavity is true.

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  • 41. 

    Which of the following describes the best way to remain approachable to an anxious patient?

    • Work slowly

    • Encourage questions

    • Encourage quiet

    • Work quickly 

    Correct Answer
    A. Encourage questions
    Explanation
    Encouraging questions is the best way to remain approachable to an anxious patient because it allows the patient to express their concerns and seek clarification. By actively encouraging questions, the healthcare provider creates a safe and supportive environment where the patient feels empowered to voice their anxieties and receive the necessary information and reassurance. This approach helps to build trust and rapport between the patient and the healthcare provider, ultimately leading to better communication and patient satisfaction.

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  • 42. 

    According to the Board regulations, instruments, items or devices that penetrate soft tissue or bone are categorized as ________________________ :

    • Multi-critical 

    • Semi-critical 

    • Non-critical 

    • Critical 

    Correct Answer
    A. Critical 
    Explanation
    According to the Board regulations, instruments, items, or devices that penetrate soft tissue or bone are categorized as critical. This means that they come into direct contact with sterile tissue or the bloodstream and have a high risk of transmitting infection. Therefore, they require the highest level of sterilization and disinfection to ensure patient safety.

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  • 43. 

     If a patient tells you how he or she is feeling, the pt is referring to a : 

    • Diagnosis 

    • Sign 

    • Explanation 

    • Symptom 

    Correct Answer
    A. Symptom 
    Explanation
    When a patient tells you how he or she is feeling, they are referring to their symptoms. Symptoms are subjective experiences that a patient describes, such as pain, fatigue, or nausea. Diagnoses are medical conditions determined by healthcare professionals based on symptoms and other objective findings. Signs are objective indications of a medical condition that can be observed or measured by healthcare professionals. Explanations are statements or descriptions that clarify or provide understanding. Therefore, the correct answer is d. symptom.

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  • 44. 

    According to California regulations, who is legally allowed to place etchant on tooth structure for purposes of a restoration or dental sealants? 

    • Dentist 

    • RDA 

    • DA 

    • Both A and B are correct 

    Correct Answer
    A. Both A and B are correct 
    Explanation
    According to California regulations, both dentists and registered dental assistants (RDAs) are legally allowed to place etchant on tooth structure for purposes of a restoration or dental sealants. This means that both dentists and RDAs have the necessary qualifications and training to perform this task safely and effectively.

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  • 45. 

    Another term for necrotic is ____________________________: 

    •  living 

    • Dead 

    • Non-vital 

    • Both B and C are correct 

    Correct Answer
    A. Both B and C are correct 
    Explanation
    The term "necrotic" refers to tissue that is dead or non-vital. Therefore, both options B and C are correct as they both describe the state of being dead or non-vital.

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  • 46. 

    Which is the most common technique for stain removal? 

    • Scaler 

    • Toothbrush 

    • Floss 

    • Rubber cup polishing 

    Correct Answer
    A. Rubber cup polishing 
    Explanation
    Rubber cup polishing is the most common technique for stain removal. This technique involves using a rubber cup attached to a dental handpiece to apply a polishing paste to the teeth. The rubber cup spins rapidly, effectively removing surface stains and polishing the teeth. It is a commonly used method in dental offices for removing extrinsic stains caused by factors such as coffee, tea, tobacco, and certain foods.

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  • 47. 

    A custom temporary is made out of _________________________ material. 

    • Metal 

    • Alginate 

    • Acrylic 

    • Cement

    Correct Answer
    A. Acrylic 
    Explanation
    A custom temporary is made out of acrylic material because acrylic is a commonly used material in dentistry for making temporary restorations. It is durable, easy to shape and polish, and provides a good fit and aesthetics. Acrylic temporaries can be easily adjusted and repaired if needed, making them a suitable choice for temporary restorations before the final restoration is placed.

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  • 48. 

    When putting on personal protective equipment, which item should be put on last, just before patient care begins? 

    • Protective clothing 

    • Protective eyewear 

    • Gloves 

    • Mask 

    Correct Answer
    A. Gloves 
    Explanation
    Gloves should be put on last, just before patient care begins, because they provide a barrier between the healthcare provider's hands and the patient's body fluids, blood, and other potentially infectious materials. By putting on gloves last, the healthcare provider ensures that they are not contaminated by any other items of personal protective equipment that were put on earlier, such as the mask or protective eyewear. This helps to prevent the spread of infections and maintain a safe environment for both the healthcare provider and the patient.

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  • 49. 

    What type of moisture control is recommended for root canal therapy? 

    • Cotton pellets 

    • Cotton rolls 

    • Dry angles 

    • Dental dam 

    Correct Answer
    A. Dental dam 
    Explanation
    A dental dam is recommended for moisture control during root canal therapy. A dental dam is a thin sheet made of latex or non-latex material that is used to isolate the tooth being treated. It is placed over the tooth and secured with a clamp, creating a barrier between the tooth and the rest of the oral cavity. This helps to keep the tooth dry and free from contamination during the procedure, allowing for better visibility and more effective treatment. Cotton pellets, cotton rolls, and dry angles are other materials used for moisture control in dentistry, but a dental dam is the most recommended option for root canal therapy.

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  • Jul 29, 2024
    Quiz Edited by
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  • Feb 15, 2020
    Quiz Created by
    Hanna
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