C3 - Da- Dental Radiography
HLTDEN002 Assist with dental radiography, Event 1 of 3
Select the best answer for the following questions. Refer to Essentials of Dental Assisting, Chapters 15 & 16, Robinson & Bird and additional resources for this quiz.
100% result required, multiple attempts are permitted.
According to the Sydney TAFE 2016 Student Guide, "a student has the responsibility to do all assessments tasks and examinations honestly and not engage in plagiarism, collusion or cheating."
Print your 100% certificate and provide it to your teacher as requested.
Good luck!
Questions and Answers
- 1.
X-rays are a form of energy called?
- A.
Electromagnetic
- B.
Electric
- C.
Xtromagnetic
- D.
Free
Correct Answer
A. ElectromagneticExplanation
X-rays are a form of energy that falls under the category of electromagnetic radiation. This type of energy consists of waves that can travel through space and carry energy. X-rays have a shorter wavelength and higher energy than visible light, making them useful in various applications such as medical imaging and security scanning.Rate this question:
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- 2.
True or false? Dental images are essential in the practice of dentistry?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Dental images are essential in the practice of dentistry because they provide valuable diagnostic information. These images help dentists identify and diagnose various dental conditions, such as cavities, gum disease, and impacted teeth. They also aid in treatment planning and monitoring the progress of dental treatments. Additionally, dental images are crucial for patient education, as they allow dentists to visually explain dental issues and discuss treatment options with their patients. Therefore, dental images play a vital role in the practice of dentistry.Rate this question:
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- 3.
Tick only the properties of X-rays from the list below:
- A.
May penetrate solids, liquids, and gases
- B.
Can be seen
- C.
May produce an image on photographic fim
- D.
Cause bilogic changes
- E.
Has a positive charge
- F.
Can be absorbed by matter
Correct Answer(s)
A. May penetrate solids, liquids, and gases
C. May produce an image on photographic fim
D. Cause bilogic changes
F. Can be absorbed by matterExplanation
X-rays have the property of being able to penetrate solids, liquids, and gases, which allows them to pass through various materials. They can also produce an image on photographic film, making them useful in medical imaging and other applications. X-rays can cause biological changes in living organisms, which is why protective measures are taken when working with them. Additionally, X-rays can be absorbed by matter, leading to the attenuation of the X-ray beam as it passes through different substances.Rate this question:
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- 4.
True or false? A harmful effect of x-rays in humans that results in disruption of cellular structure and causes permanent damage to living cells and tissue is known as Ionization
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Ionization is the process in which an atom or molecule gains or loses electrons, resulting in the formation of charged particles called ions. When x-rays interact with living cells and tissues, they have enough energy to remove electrons from atoms, causing ionization. This disruption of cellular structure can lead to permanent damage to living cells and tissues, making the statement true.Rate this question:
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- 5.
ALARA is an acronym for ____?
- A.
As low as reasonably achievable
- B.
As low as reasonably available
- C.
As light as reasonably achivable
- D.
Always low as reasonably achievable
Correct Answer
A. As low as reasonably achievableExplanation
ALARA is an acronym that stands for "as low as reasonably achievable." This acronym is commonly used in the field of radiation safety to emphasize the importance of minimizing exposure to radiation. The principle behind ALARA is to strive for the lowest possible radiation dose that is still reasonably achievable, taking into account factors such as technology, economics, and societal considerations. By following the ALARA principle, individuals and organizations can effectively reduce the risks associated with radiation exposure.Rate this question:
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- 6.
The ALARA principle protects ___?
- A.
Only the patient
- B.
Only the operator
- C.
Both the patient and the operator
- D.
Neither the patient or operator
Correct Answer
C. Both the patient and the operatorExplanation
The ALARA principle, which stands for "As Low As Reasonably Achievable," is a radiation safety principle used in medical imaging. It aims to minimize radiation exposure to both the patient and the operator. By implementing appropriate radiation protection measures, such as using shielding devices and optimizing imaging techniques, the ALARA principle ensures that radiation doses are kept as low as reasonably achievable for both parties involved in the medical imaging process. This helps to reduce the potential risks associated with radiation exposure for both the patient and the operator.Rate this question:
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- 7.
True or false?The slower the film speed, the less radiation exposure to the patient?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The faster the film speed, the less radiation exposure to the patientRate this question:
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- 8.
True or false?Digital radiography allows for a substantial decrease in patient exposure relative to film-based radiography?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Digital radiography allows for a substantial decrease in patient exposure relative to film-based radiography because digital images can be manipulated and enhanced without the need for additional radiation exposure. Additionally, digital radiography systems are more sensitive to X-rays, requiring less radiation to produce high-quality images compared to film-based systems. This reduction in patient exposure is one of the advantages of using digital radiography technology.Rate this question:
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- 9.
What is the exception to the rule that a lead apron and thyroid collar must be used on all patients for all intraoral exposures?
- A.
None, there are no exceptions
- B.
When you use digital imaging
- C.
When you are taking only one radiograph
- D.
When you are over 18
Correct Answer
A. None, there are no exceptionsExplanation
The correct answer is "none, there are no exceptions." This means that there is no exception to the rule that a lead apron and thyroid collar must be used on all patients for all intraoral exposures. This indicates that regardless of the circumstances, these protective measures should always be taken to ensure the safety of the patient during radiographic procedures.Rate this question:
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- 10.
True or false?Folded lead aprons will eventually crack and allow radiation to leak through the apron.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Folded lead aprons can develop stress points and cracks over time due to repeated folding and unfolding. These cracks can compromise the integrity of the apron and allow radiation to leak through, potentially exposing the wearer to harmful radiation. Therefore, it is true that folded lead aprons will eventually crack and allow radiation to leak through.Rate this question:
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- 11.
True or false?Care should be taken not to touch the apron with the same gloves that were used to place the film or sensor in the patient's mouth?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
It is important to avoid touching the apron with the same gloves that were used to handle the film or sensor in the patient's mouth. This is because the gloves used during the dental procedure may be contaminated with saliva, blood, or other bodily fluids, which could potentially transfer onto the apron. To maintain proper infection control protocols, it is necessary to minimize cross-contamination by using separate gloves for different tasks.Rate this question:
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- 12.
Select items that should be removed prior to taking an intraoral radiograph?
- A.
Eyeglasses
- B.
Oral piercings
- C.
Dental prostheses
- D.
Wrist watch
- E.
Necklace
Correct Answer(s)
A. Eyeglasses
B. Oral piercings
C. Dental prosthesesExplanation
Prior to taking an intraoral radiograph, certain items should be removed to prevent interference with the image or potential harm to the patient. Eyeglasses should be removed as they can obstruct the view and cause artifacts on the radiograph. Oral piercings should be removed to prevent any metal objects from obstructing the image or causing injury to the patient. Dental prostheses should also be removed to ensure a clear image of the oral structures. However, the removal of a wrist watch and necklace is not necessary for an intraoral radiograph.Rate this question:
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- 13.
A ________ is used to measure the amount of occupational exposure?
- A.
Film badge
- B.
Pocket odometer
- C.
Manometer
- D.
There is no way to measure the amount of occupational exposure
Correct Answer
A. Film badgeExplanation
A film badge is used to measure the amount of occupational exposure. This device contains a film that is sensitive to radiation, such as X-rays or gamma rays. When the film badge is worn by a worker, it records the amount of radiation exposure they receive. The film is then developed and analyzed to determine the level of occupational exposure. This measurement is important for ensuring the safety of workers in environments where radiation exposure is a concern.Rate this question:
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- 14.
Identify the following oral radiographic view:
- A.
Periapical (PA)
- B.
Bite-wing
- C.
Occlusal
- D.
Orthopantomograph (OPG)
Correct Answer
A. Periapical (PA)Explanation
A periapical (PA) radiographic view is used to capture an image of the entire tooth, from the crown to the root, as well as the surrounding bone. It is commonly used to detect dental caries, periapical abscesses, and other abnormalities in the tooth structure or surrounding tissues. This view provides a detailed image of a specific tooth or group of teeth and is often taken with a small film or digital sensor placed near the tooth of interest.Rate this question:
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- 15.
Identify the following oral radiographic view:
- A.
Periapical (PA)
- B.
Bite-wing
- C.
Occlusal
- D.
Orthopantomograph (OPG)
Correct Answer
B. Bite-wingExplanation
A bite-wing is an oral radiographic view that is used to capture images of the upper and lower posterior teeth in a single film. It shows the crowns of the teeth and the level of the alveolar bone. Bite-wing radiographs are commonly used to detect dental caries, evaluate the fit of dental restorations, and assess bone levels around the teeth.Rate this question:
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- 16.
Identify the following oral radiographic view:
- A.
Periapical (PA)
- B.
Bite-wing
- C.
Occlusal
- D.
Orthopantomograph (OPG)
Correct Answer
D. Orthopantomograph (OPG)Explanation
An orthopantomograph (OPG) is a type of oral radiographic view that provides a panoramic or wide-angle view of the entire jaw, including the teeth, jaws, and surrounding structures. It is commonly used to assess the overall dental health and detect any abnormalities or pathologies in the oral cavity. Unlike other views mentioned such as periapical, bite-wing, and occlusal, an OPG gives a comprehensive view of the entire jaw rather than focusing on specific areas or teeth.Rate this question:
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- 17.
Identify the following oral radiographic view:
- A.
Periapical (PA)
- B.
Bite-wing
- C.
Occlusal
- D.
Orthopantomograph (OPG)
Correct Answer
C. OcclusalExplanation
The given correct answer is "Occlusal". Occlusal radiographic view is a type of dental X-ray that captures the entire arch of teeth in the upper or lower jaw. It provides a detailed image of the occlusal or biting surfaces of the teeth, as well as the surrounding bone and structures. This view is commonly used to diagnose issues related to tooth eruption, dental abnormalities, and jaw fractures. It is also helpful in assessing the size and position of impacted teeth and evaluating the extent of dental caries.Rate this question:
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- 18.
The most common film size used is?
- A.
Size 1
- B.
Size 2
- C.
Size 4
- D.
Size 0
Correct Answer
B. Size 2Explanation
Size 2 is the most common film size used. This implies that among the given options, size 2 is the most widely used film size in the film industry.Rate this question:
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- 19.
True or false?Unexposed films be should be stored in a refrigerator?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Film manufacturer's recommend storing films in a cool place but not in the refrigerator because removing films from a refrigerator can create condensation on the filmsRate this question:
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- 20.
Films are best to be stored in all of the following areas, except?
- A.
Where films are being exposed
- B.
Dark
- C.
Cool
- D.
Dry
Correct Answer
A. Where films are being exposedExplanation
Films are best stored in areas that are dark, cool, and dry to prevent any damage or deterioration. However, storing films in areas where they are being exposed, such as to direct sunlight or high levels of heat, can lead to fading, discoloration, and other forms of damage. Therefore, it is not recommended to store films in areas where they are being exposed.Rate this question:
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- 21.
True or false?An advantage of automatic film processing is the that less equipment and space is required?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Automatic film processing is indeed advantageous because it requires less equipment and space compared to manual film processing. In manual processing, a darkroom with various equipment such as trays, tanks, and enlargers is needed, along with ample space for these items. On the other hand, automatic film processing machines are compact and can be easily integrated into a smaller space, reducing the need for a dedicated darkroom. Additionally, automatic processing eliminates the need for manual handling of chemicals and reduces the risk of errors, making it a more efficient and space-saving option.Rate this question:
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- 22.
Automatic chemicals should be changed ___?
- A.
Every 2-6 weeks
- B.
Every 2-6 days
- C.
Every 3-4 weeks
- D.
Every 3-4 days
Correct Answer
A. Every 2-6 weeksExplanation
Automatic chemicals should be changed every 2-6 weeks because this time frame allows for proper maintenance and ensures that the chemicals remain effective in keeping the desired levels in the water. Changing the chemicals too frequently, such as every 2-6 days, may result in unnecessary waste and increased costs. On the other hand, waiting for 3-4 weeks or 3-4 days may lead to inadequate chemical levels, potentially causing issues with water quality and sanitation. Therefore, the recommended time frame of every 2-6 weeks strikes a balance between regular maintenance and cost-effectiveness.Rate this question:
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- 23.
Identify the following processing error:
- A.
Underdeveloped
- B.
Overdeveloped
- C.
Overlapped film
- D.
Developer splash
Correct Answer
B. OverdevelopedExplanation
The given answer, "overdeveloped," refers to a processing error in film development where the film is processed for too long or with a higher concentration of developer solution than necessary. This leads to excessive development of the film, resulting in darker and denser images with increased contrast.Rate this question:
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- 24.
Identify the following processing error:
- A.
Underdeveloped
- B.
Overdeveloped
- C.
Overlapped film
- D.
Developer splash
Correct Answer
A. UnderdevelopedExplanation
The given answer "underdeveloped" is the correct identification for the processing error. This error refers to a situation where the film has not been developed enough or for a sufficient amount of time. As a result, the image appears lighter and lacks detail. This can occur due to various factors such as incorrect development time, low developer temperature, or insufficient agitation during the development process.Rate this question:
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- 25.
Identify the following processing error:
- A.
Underdeveloped
- B.
Overdeveloped
- C.
Overlapped film
- D.
Developer splash
Correct Answer
C. Overlapped filmExplanation
The given answer, "overlapped film," refers to a processing error where two or more film frames are exposed onto each other, resulting in a merged or overlapping image. This error can occur when the film is not properly loaded or advanced in the camera, causing multiple exposures on the same frame.Rate this question:
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- 26.
True or false? Exposure times for digital radiography are 70 to 80 percent more than those required with conventional film?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Exposure times for digital radiography are 70 to 80 percent less than those required with conventional filmRate this question:
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- 27.
The basic digital imaging system that uses a solid-state sensor is___?
- A.
Direct imaging
- B.
Indirect imaging
- C.
Film based imaging
- D.
Phosphor plate
Correct Answer
A. Direct imagingExplanation
Direct imaging is the correct answer because it refers to a digital imaging system that uses a solid-state sensor. In direct imaging, the solid-state sensor directly captures the image and converts it into digital data, eliminating the need for intermediate steps such as film or phosphor plates. This technology is commonly used in digital cameras and medical imaging devices like digital X-ray systems.Rate this question:
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- 28.
True or false?The dentist owns the dental radiographs even though the patient or insurance company paid the fee?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The dentist owns the dental radiographs
Radiographs are diagnostic aids and are part of the patient's permanent record
Patients have a right to reasonable access to their records, including a copy of the radiographsRate this question:
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- 29.
All of the following describes phosphor storage plates, except?
- A.
More expensive than solid-state sensors
- B.
Thin and flexible
- C.
Uses a scanner to display image
- D.
Must be inserted into a barrier envelope
Correct Answer
A. More expensive than solid-state sensorsExplanation
Phosphor storage plates are thin and flexible imaging plates that are used in computed radiography systems. They do not require a scanner to display the image, as they can be directly read by a laser. Additionally, they must be inserted into a barrier envelope to protect them from damage. However, they are not more expensive than solid-state sensors, which are electronic devices used in digital radiography systems. Solid-state sensors are typically more expensive than phosphor storage plates.Rate this question:
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- 30.
According to the ADA, digital radiography sensors are considered __________ devices?
- A.
General
- B.
Critical
- C.
Semi-critical
- D.
Non-critical
Correct Answer
C. Semi-criticalExplanation
According to the ADA, digital radiography sensors are considered semi-critical devices. This means that they come into contact with mucous membranes or non-intact skin and have a high risk of transmitting infection. Therefore, they require a high level of disinfection or sterilization to prevent the spread of pathogens.Rate this question:
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- 31.
According to the ADA, it is necessary to dry the film packets with a paper towel after exposure BEFORE placing into a disposable cup for transport
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
According to the ADA, it is necessary to dry the film packets with a paper towel after exposure before placing them into a disposable cup for transport. This implies that the ADA guidelines recommend a specific procedure for handling film packets, which involves drying them with a paper towel before transferring them to a disposable cup. This step is likely important to ensure that the film packets are protected and properly prepared for transport.Rate this question:
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- 32.
Identify the following processing error:
- A.
Exposure to light
- B.
Fixer spots
- C.
Fingerprint
- D.
Scratched film
Correct Answer
C. FingerprintExplanation
The processing error identified in this question is a fingerprint. During film processing, if a fingerprint comes into contact with the film, it can leave a mark or smudge on the processed image. This can result in a distorted or unclear image, affecting the overall quality of the photograph.Rate this question:
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- 33.
Identify the following processing error:
- A.
Exposure to light
- B.
Fixer spots
- C.
Fingerprint
- D.
Scratched film
Correct Answer
D. Scratched filmExplanation
The correct answer is "scratched film". This refers to a processing error that occurs when the film is physically damaged, resulting in visible scratches on the surface. These scratches can affect the quality of the image and may cause distortions or missing portions in the final print.Rate this question:
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- 34.
Identify the following processing error:
- A.
Exposure to light
- B.
Fixer spots
- C.
Fingerprint
- D.
Scratched film
Correct Answer
A. Exposure to lightExplanation
Exposure to light is a processing error that occurs when the film is unintentionally exposed to light before or during the development process. This can result in overexposed areas on the film, causing loss of detail and clarity in those areas.Rate this question:
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- 35.
Identify the following processing error:
- A.
Exposure to light
- B.
Fixer spots
- C.
Fingerprint
- D.
Scratched film
Correct Answer
B. Fixer spotsExplanation
Fixer spots are a processing error that occurs during the development of film. They appear as small, dark spots on the final image and are caused by inadequate fixing of the film. Fixer is a chemical used in the development process to remove any remaining undeveloped silver halide crystals from the film. If the fixer is not properly applied or if there are areas where it doesn't reach, fixer spots can occur. These spots can be distracting and affect the overall quality of the image.Rate this question:
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- 36.
True or false?According to the ADA, it is not necessary to use barriers on developing equipment?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
According to the ADA, it is necessary to use barriers on developing equipment. This ensures that individuals with disabilities have equal access to and can use the equipment without any limitations or barriers. By implementing barriers, it promotes inclusivity and ensures that everyone can benefit from the equipment.Rate this question:
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- 37.
True or false?Informed consent includes explaining the purpose of taking radiographs to the patient and helping the patient to understand the risks and benefits of dental radiographs.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Informed consent is a legal and ethical requirement in healthcare, including dental procedures. It involves providing patients with all relevant information about their treatment, including the purpose of taking radiographs and the potential risks and benefits associated with them. By obtaining informed consent, healthcare professionals ensure that patients have a clear understanding of their treatment options and can make an informed decision about their care. Therefore, the statement that informed consent includes explaining the purpose of taking radiographs and helping the patient understand the risks and benefits is true.Rate this question:
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- 38.
It is important to rotate stock so that it is used before its expiry date. An expired box of stock should be left on the same shelf as the current stock.
- A.
Both statements are true
- B.
Both statements are false
- C.
The first statement is true, the second statement if false
- D.
The first statement is false, the second statement if true
Correct Answer
C. The first statement is true, the second statement if falseExplanation
The first statement is true because rotating stock ensures that older items are used before newer ones, reducing the risk of items expiring before they can be sold. The second statement is false because expired stock should be removed from the shelves to prevent customers from accidentally purchasing and consuming expired products.Rate this question:
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