DANB RHS study

The type of radiograph that would show the whole tooth including the crown, roots, and jawline is called?

a. bitewing x-ray

b. periapical x-ray

c. occlusal x-ray

d . tomogram

b

a bitewing radiograph is useful in diagnosing all of the following except:

a. impacted tooth

b. tooth decay

C. periodontal bone loss

D. gum disease

a

a full-mouth survey generally includes:

a. 14 periapical views and 4 to 6 bitewings

b. 10 periapical views and 8 bitewings

c. 14 periapical views and 4-6 bitewings and a panoramic

d. 8 periapical views and 4 bitewings

a

the best radiograph to obtain for diagnosis of temporomandibular joint (TMJ) is:

a. panoramic

b. periapical

c. sialography

d. arthrography

d

what type of radiograph is used by an orthodontist to assist with treatment planning?

a. tomography

b. sialogrophy

c. cephalometric

d. occlusal

c

which of the following is a true statement regarding the use of lead aprons and thyroid collars?

a. the use of lead 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 patient's knee

c. lead aprons should be cleaned thoroughly and fold it in thirds between patient use

d. the thyroid collar is optional for older adults past childbearing years

b

where is the most appropriate place to store Dental film?

a. in a cool, dry closet

b. in a refrigerator

c. in the treatment room

d. near the X-ray machine

a

a dental assistant experience has an occupational exposure. A patient's blood has splashed into the employees eye. Which of the following is an appropriate step to take?

a. immediately draw blood from the patient in order to get it tested for HIV and hbv

b. require the employee to have their own blood tested immediately for HIV and hbv

c. document the incident, including the source individual, the employee, routes of exposure, and how it happened

d. check the patient's chart in determine if risk factors are present to Warrant further testing for the employee

c

which of the following is false regarding hand-washing?

a. alcohol-based hand gel can be used in place of soap and water on hands that are visibly dirty

b. fingertips, thumbs, and between the fingers are three areas that are frequently not cleaned thoroughly with hand washing

c. alcohol-based hand gel or foam should have a concentration of 60%-95% alcohol

d. cool water should be used to rinse hands after washing because it helps to close the pores in the skin

a

a new patient has recently moved to the area and arrives for her first appointment in the dental practice. She is 6 months pregnant. She is complaining of a toothache. She does not bring dental records with her. Which of the following would be the most appropriate for obtaining dental X-rays?

a. obtaining full melt survey as well as a panoramic in order to establish a

b. only x-ray the area she is complaining about using the letters apron and thyroid collar for protection

c. hold off on any x-rays because of the pregnancy

d. obtain a full set of bitewing X-rays to check for other areas of concern using lead apron and thyroid collar for protection

b

what is the name of the device used to monitor employees for radiation exposure?

a. radiographometer

b. oximeter

c. holter monitor

d. dosimeter

d

for internal x-rays, what film speed is the fastest and reduces the amount of patient exposure to radiation?

a. a-speed

b. d-speed

c. f-speed

d. h-speed

c

which of the following is used to control the degree of penetration of the X-ray beam?

a. exposure button

b. kilovoltage Peak selector

c. milliamperage selector

d. master switch

b

a reverse smile line observed on a panoramic image is likely due to:

a. position of the patient's chin is too high

b. position of the patient's chin is too low

c. the patient's spine is not straight

d. the patient's lips were not close during Imaging

a

a cone-shaped radiopaque image on a Panoramic X-Ray is likely caused by:

a. use of a thyroid collar during Imaging

b. earrings

c. orthodontic retainer

d. tongue piercing

a

how does the use of photostimulable storage phosphor (PSP) plates affect digital radiography?

a. PSP plates are the thickest form of sensor and are the most uncomfortable to the patient

b. PSP plates allow for heat sterilization, making infection control easier to manage

c. PSP plates provide slightly more radiation exposure to the patient than traditional Dental film

d. PSP plates do not offer a media access to the digital image

d

which of the following is not a disadvantage of digital radiography?

a. infection control issues

b. lost images

c. cost for purchasing Digital Imaging equipment

d. training

b

the use of outdated Dental film may cause an x-ray to have:

a. partially missing image

b. white spots on the film

c. a foggy or great appearance

d. appearance of streaks on final film

c

which of the following would not be a reason for the dental x-ray image to come out black?

a. processing time is too short

b. temperature is too warm

c. film has been exposed to white light

d. damaged Safelight

a

what will happen to an x-ray film that is left in the processing solution too long?

a. there will be white spots on the X-ray

b. there will be dark spots on the final image

c. the image will be either partially or completely missing

d. the X-ray will appear yellowish Brown

c

a dental x-ray that has the appearance of black lines that look like a tree branch is caused by:

a. overlapped films

b. static electricity

c. overexposure

d. air bubbles

b

what type of chemical is used in the developing agent to convert the silver halide crystals to Black?

a. potassium bromide

b. sodium sulfate

c. acetic acid

d. hydroquinone

d

during manual processing, how long should the film remain in the developer solution if the temperature of the solution is 65 degrees Fahrenheit?

a. 8 minutes

b. 6 minutes

c. 5 minutes

d. 3 minutes

b

contaminated areas in the radiography area must be disinfected using:

a. bleach and water

b. hydrogen peroxide

c. rubbing alcohol

d. hospital grade disinfectant solution

d

what's product in the dental office contains Mercury?

a. fix your agents

b. Amalgam

c. fluoride

d. alginate

b

disposal of an extracted tooth is considered to be:

a. General waste

b. toxic waste

c. infectious waste

d. hazardous waste

c

which of the following can be disposed of in the regular trash or down the drain?

a. fixer

b. developer

c. chromium containing x-ray system cleaner

d. expired Amalgam capsules

b

when mounting Dental film, The preferred order is:

a. maxillary anterior periapical mandibular anterior periapical

bitewing

maxillary posterior periapical

mandibular posterior periapical

b. bitewing

maxillary anterior periapical

mandibular anterior periapical

maxillary posterior periapical mandibular posterior perapical

c. maxillary posterior periapical mandibular posterior periapical bitewing

maxilar anterior periapical

mandibular anterior periapical

d. maxillary anterior periapical mandibular anterior periapical

maxillary posterior periapical

mandibular posterior periapical

bitewing

a

which of the following do not include anatomical landmarks of the mandible?

a.lingual foramen, coronid process, ramus

b.incisive foramen, mental foramen, genial tuercle

c.medial sigmoid notch, symphysis, external oblique notch

d. trabecular patterns, alveolar crest, internal oblique

b

which of the following are not maxillary landmarks?

a.hard palate, nasal septum, nasal conchae

b.alveolar crest, genial tubercle, coronoid process

c.infraorbital foramen, orbit, mastoid process

d. external auditory meatus, malar, glenoid fossa

b

when identify anatomical structures and dental materials on radiograph, which of the following is true?

a. the enamel is radiolucent and located at the crown of the tooth

b. the root canals are radiopaque and extend from the pulp chamber to the apex of the tooth

c. the periodontal ligament can be visualized as radiopaque

d. the dentin is not a radiopaque as enamel

d

a patient is moving and asks for the most recent x-rays for the new dentist. Which of the following is not the preferred procedure for fulfilling this request?

a. often the original x-rays from the patient's record and give them to the patient to take to the new dentist

b. prepare a copy of the film's and allow the patient to take these to the dentist

c. obtain contact information from the patient and mailed to the new dentist

d. obtain an email address for the new dentist and send a digital image electronically

a

for manual duplication of X-ray films, which of the following condition is incorrect?

a. duplication must be completed in the dark room with the safelight

b. special duplicating film must be used

c. film duplication can be done in the regular office setting without any special conditions

d. the duplicating machine produces white light in order to expose the film

c

characteristics of x-rays include all of the following except:

a. x-rays are not visible or apparent to any of the senses

b. x-rays travel at half the speed of light

c. x-rays travel in a straight line but can easily be deflected

d. shoulder x-rays are more useful in Dental radiographs

b

in what part of the X-ray machine are there x-rays produced?

a. x-ray tube

b. tube head

c. control panel

d. Transformer

a

what is the function of the collimator?

a. it directs the X-ray beam to the appropriate place

b. it allows electrons to cross over the castle way to reach the anode

c. it forms the shape and size of the X-ray being in pain leaving the tubehead

d. it filters out the wavelengths that are unusable

c

what is the term used to describe the number of electrons that are produced?

a. kilovoltage Peak

b. thermionic emission

c. milliamperage selector

d. kinetic energy

c

according to the American Academy of Oral & Maxillofacial Radiology, how often should an x-ray machine be tested?

a. every 6 months

b. annually

c. biannually

d. every 3 years

b

which of the following would likely not be necessary in the case of an accidental radiation exposure?

a. report the exposure to the radiation protection office (RPO)

b. turn the power to the system off immediately

c. advise expose individuals to obtain medical care if needed

d. evacuate the building

d

chronic radiation exposure to the lens of the eye may result in:

a. astigmatism

b. strabismus

c. cataracts

d. glaucoma

c

what is the maximum permissible dose (MPD) of radiation for a dental assistant?

a. 5 Rem / year

b.0.5 rem/year

c.10 rem/year

d.50 rem/year

a

which of the following is considered secondary radiation?

a. radiation that goes through the collimator and position-indicating device (PID)

b. radiation that reflects off the patient's face

c. radiation that leaks from the tubehead

d. radiation directed at an area for cancer treatment

b

which of the following is not an effective way that the "as low as responsible the achievable" (Alara) principle can be achieved in a dental office for the protection of the patient?

a. use LED aprons and thyroid colors

b. use of D film

c. minimize the time of exposure

d. use of digital radiographs

b

what is the proper distance for the operator to stand away from the X-ray beam to minimize exposure?

a. 2 feet

b. 4 feet

c. 6 feet

d. 8 feet

c

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

a. the effect of long-term low-dose radiation exposure will cause genetic defects for both men and women in their childbearing years

b. the effect of long-term low-dose radiation exposure will cause cancer

c. the effect of long-term low-dose radiation exposure can cause changes at the cellular level in the human body that would be observed within two years

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

d

what parts of the X-ray machine functions to remove the most dangerous x-rays from reaching both the patient and the operator?

a. aluminum filter

b. collimator

c. PID

d. milliamperage selector

a

a young patient is having difficulty holding still for x-rays. What is the most appropriate stuff for the dental assistant to take?

a. try again next appointment

b. ask the parent to have the child sit on his or her lap with both covered by the LED apron

c. ask the dentist to hold the child

d. stand next to a child can hold a sensor in place until the x-rays are completed

b

what is the correct way for dental assistant to wear dosimeter?

a. only when he/she is taking x-rays

b. all day, everyday

c. Des during normal business hours for the practice

d. only when he / she is at the dental office

d

during what stage of pregnancy is the fetus most sensitive to the effects of radiation exposure?

a. weeks 2 through 15

b. weeks 16 through 24

c. weeks 24 to turm

d. during the entire pregnancy

a

what is the best possible scenario for a pregnant dental assistant in terms of employment?

a. the dental assistant should quit your job immediately

b. the dental assistant should ask for a leave of absence starting in the 6-month

c. the dental assistant should make her decision as early in the pregnancy as possible regarding whether the risk of her unborn child are acceptable in her current position

d. dental assistant should keep her pregnancy a secret until the risk of miscarriage has passed after about the fourth month

c