DANB RHS Practice Test Flashcards by Kadraya Taylor

During pan. positioning of the patient , if the pt. chin is positioned too low , the following will be seen on the processed radiograph

A: a smile line curved downward

B: open contact on the posterior teeth

C: detail in the anterior apical regions

D: the absence of the pt. condyles in the correct anatomical position

D. The absence of the pt. condyles in the correct anatomical position

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All of the following are accurate statements regarding hand hygiene under dental gloves except:

A. the dental radiographer’s fingernails should be short enough so that they do not interfere with the placement and removal of dental gloves

B. chipped nail polish found on the fingernails may increase the number of bacteria found in those areas.

C. Rings should be avoided b/c the skin underneath them contains more bacteria and viruses compared to skin in other areas without rings.

D. Petroleum-based lotions are found to be the most beneficial for dental radiographers to use under gloves , allowing for the lotion to have the proper contact time with the skin.

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which one of the following is accurate about direct digital imagining?

A. A sensor is placed in the mouth , it is exposed to radiation, and an image is immediately appears on a monitor for viewing.

B. A sensor is placed in the mouth , it is exposed to radiation, it is processed by a scanner, and the image is emailed to the user for viewing.

A. A sensor is placed in the mouth , it is exposed to radiation, and an image is immediately appears on a monitor for viewing.

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All of the following statements regarding the somatic effect of radiation are TRUE, EXCEPT;

A. Damage caused by radiation from somatic effects is passed on to future generations.

B. x-rays can damage somatic tissues.

C. One possible somatic effect of radiation is cancer.

D. X-rays affect somatic cells

A. Damage caused by radiation from somatic effects is passed on to future generations.

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which of the following is a accurate description of ionization

a. the pairing of electrons and protons to create ions.

b. the creation of stable atoms due to radiation striking the nucleus of an ion.

C. The process of particulate radiation striking a cell and destroying the DNA of that cell.

D. the process of converting stable atoms into ions.

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Tomography can be best described as:

A. the production of a clear, crisp image

B. the process of imaging a desired structure while blurring of other areas.

C. the process of capturing the coronal portion of each erupted.

B. the processed of imaging a desired structure while blurring of other areas.

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which of the following is an example of an acceptable disinfection technique used in dental imaging ?

A. Leaving pt. care items in their packaging until they are ready for use.

B. using an immersion sterilant for a heat -stable beam alignment device.

A. Leaving pt. care items in their packaging until they are ready for use.

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when preparing the dental imaging area for pt. care, which one is correct?

A. The DA should retrieve all items including beam alignment devices, open all packages, and lay out the items in the imaging area to allow for decreased imaging time.

B. The radiographic imager should place barriers over radiographic equip. including the exposure button and control panel because there are often hard-to-reach areas that create pathogens.

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which statement best describes the effects of long-term low-dose radiation exposure.

A. The effect of long-term low-dose rad. exposure will cause genetic defects for both men and women in their childbearing years

B. the effect of long term low-dose rad. exposure can cause changes at the cellular level in the human body that would not be observed for many years.

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The difference between acute rad. exposure and chronic rad. exposure is …

A. the type of radiation received

B. the type of scattered radiation received.

C. the amount of radiation received and the time frame in which it is absorbed.

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identify the density and contrast of a dental image produced using high kilovolt or KV setting:

A. high density; low contrast
B. high density; high contrast
C. Low density; low contrast
D. Low density; high contrast

A. high density; low contrast

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To prevent cross contamination from a used sensor holder, which one of the following must be avoided?

A. place the used/ contaminated sensor holder into a secure container for transport to the instrument processing area

B. Have separated locations for receiving/cleaning, prepping/packaging, sterilizing/storing instruments in the instrument processing area.

C. Forgo precleaning practices on the sensor holder including hand scrubbing, automated washing, or the use of ultrasonic machine if the dental radiographer does not see any debris on the item.

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which one will appear on dental images as white restorations that commonly appear in the posterior area of the mouth and are examples of indirect restorations?

A. Amalgam restorations
B. Gold crowns
C. Composite restorations
D. Porcelain crowns

B. Gold Crowns

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When describing the long axis of a tooth when referring to the paralleling technique, which of the following statements are true ?

A. The long axis can be seen on each tooth

B. The long axis of the tooth divides it into equal thirds

C. The long axis of the tooth divides it into equal halves

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when observing dental images, which anatomical landmark can assist you in identifying the molar bitewing?

A. The maxillary sinus
B. the mandibular canal
C. the mental foramen
D. The external Oblique

D. The external Oblique

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A reversed smile line observed on a pan. image is likely due to ?

A. Position of the pt. chin is to high

B. Position of the pt. is to low

C. the pt. spine is not straight

D. The pts. lips were not closed during imaging

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A. Position of the pt. chin is to high

Which of the following is the device that restricts the size and shape of the x-ray beam?

A. aluminum filter
B. Lead collimator
C. Tungsten Target
D. Molybdenum focusing cup

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B. Lead collimator

If the kVp setting is lowered, , how will the this affect the resulting image?

A. The image will have a higher contrast

B. the image will show areas of black and white with many shades of gray between them.

C. The image will have elongation and stretched roots.

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A. The image will have a higher contrast

If a dental x-ray tube head head has a faulty seal, the following will result:

A. the x-ray unit will not emit rad./ energy to successfully capture a dental image.

B. leakage radiation.

C. The electrical system of the dental radiography unit will sound an alarm

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B. leakage radiation.

what is the most likely reason for a dental radiographer to receive a reading on their personal radiation monitoring device?

A. Failure of the dental radiographer in following the rules of working with radiation, to include not wearing a badge outside of the clinic/practice.

B. Non-functional digital sensor.

C. Uncooperative patients.

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A. Failure of the dental radiographer in following the rules of working with radiation, to include not wearing a badge outside of the clinic/practice.

what is a main disadvantage of using digital imaging in dentistry ?

A. the gray-scale resolution
B. The speed of viewing images
C. the amount of radiation that a pt. is exposed
D. The sensor size and thickness

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D. The sensor size and thickness

what is a true statement regarding to pt. using aprons and thyroid collars ?

A. the use of pts. aprons and thyroid collars will prevent cancer from developing in the thyroid gland.

B. The apron should cover from the neck to just above the pts. knees.

C. Pt. aprons should be cleaned thoroughly and folded in thirds between pt. use

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B. The apron should cover from the neck to just above the pts. knees.

which one of the following is correct when using phosphor storage plates ?

A. Gather the PSPs, place each PSP in a barrier, capture the images, remove each PSP From its barrier, and allow each PSP to drop into a cup that will be used for transporting the plates to the scanner once all images have been obtained.

B. collect the PSP’s required for the pt. disinfect each PSP, place the PSP in the pts. oral cavity to capture the image with no barrier, remove the PSP, disinfect them again, and transport them to the scanner for processing.

C. Collect the PSPs while setting up the treatment room, disinfect each PSP, allow each one to dry, place the PSPs in a barrier, use the PSP to capture the image, remove the barriers with the PSPs from the oral cavity, remove the PSPs from the barriers, place each PSP into a scanning disinfectant solution, and place into the PSP scanner.

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which of the following will appear more radiopaque on a dental radiograph?

A. Composite restorations
B. Amalgam restorations
C. Gutta Percha
D. Porcelain Crowns

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B. Amalgam restorations

when is is acceptable to sterilize an extension cone paralleling (XCP) device without the use of packaging? A. An XCP device must be packaged before sterilization to maintain its sterility afterward. B. When the XCP device will be transferred to the point of use immediately following sterilization and can be done so in a aspect manner.

B. When the XCP device will be transferred to the point of use immediately following sterilization and can be done so in a aspect manner.

which one of the following is a radiation hazard that emerges from the soil as a colorless and odorless gas that can cause lung cancer? A. fallout radiation B. Cosmic energy C. Radon D. UV radiation

C. Radon

which of the following choices is TRUE regarding chronic radiation exposures? A. This type of radiation exposure is a risk to dental staff that process dental radiographs. B. Chronic radiation exposure will not be passed on to future generations. C. This king of exposure can be easily linked to the source.

A. This type of radiation exposure is a risk to dental staff that process dental radiographs.

which one of the following is correct regarding infection control practices in dental imagining and Photostimulable phosphor plates (PSP)? A. When PSPs are removed from the mouth, they are contaminated and should be removed with gloved hands B. It is a common infection control practice for the dental radiographer to ask the patient to remove the PSP from the mouth after the receptor has been exposed to radiation in order to minimize the radiographers contact with the pts. oral mucosa. C. Barriers are uncommonly used PSPs due to the antimicrobial properties of the imaging sensors.

A. When PSPs are removed from the mouth, they are contaminated and should be removed with gloved hands

what is accurate regarding housekeeping surfaces found in dental radiography area of the dental office? A. Housekeeping surfaces have a high risk of disease transmission. B. Housekeeping surfaces have to be decontaminated at the same level as clinical contact surfaces. C. An example of a housekeeping surface is the floor. D. Housekeeping surfaces must be cleaned after each patient encounter.

C. An example of a housekeeping surface is the floor.

the maximum permissible dose of occupational radiation exposure for dental staff allowed in a year is

C. 5 Rem

DANB RHS Practice Test Flashcards

#1 (30 cards)