NDAEB 5.4 Radiation Safety Part 1

Question 1 of 32

Category: 5.Patient Care Procedures

The reason dosimeters should not be worn away from the dental clinic is?

To prevent transmission of bacteria or other microorganisms

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To prevent the cross contamination of chemicals

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Because the meters are designed to measure radiation from man-made sources only

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Because the meters are designed to measure radiation from occupational sources only

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Question 2 of 32

Category: 4.Patient Care Procedures

If all precautions and guidelines are followed, the technician should never receive what?

Work related injury

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Primary radiation

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Germs from the machines

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A patient complaint

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Question 3 of 32

Category: NDAEB WE Mock Exam

A good practice, even in small practices, is that operators do all of the following except for?

Wear dosimeters

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Receive regular equipment training

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Review radiation safety procedures

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Report to radiographic use to regulatory agencies

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Question 4 of 32

Category: NDAEB Mock Exam

The maximum permissible level of radiation (per year) for pregnant dental workers is?

10 millisievert

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75 millisievert

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5 millisieverts

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25 millisieverts

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Question 5 of 32

Category: 4.Patient Care Procedures

A thyroid collar is recommended for which patient?

Menopausal women

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Men over 50

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Pregnant women

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All patients

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Question 6 of 32

Category: 4.Patient Care Procedures

Pre-natal radiation exposure is the exposure of?

An unborn baby to radiation

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A non-pregnant woman to radiation

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A potentially pregnant woman to radiation

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A young child to radiation

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Question 7 of 32

Category: NDAEB WE Mock Exam

A 21-year-old patient with a dental disease has been informed that radiation is the major contributor to her illness. What type of infectious agent is radiation considered?

Biological

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Physical

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Psychological

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Chemical

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Question 8 of 32

Category: 4.Patient Care Procedures

The maximum permissible level of radiation per year for nonpregnant dental workers is?

50 millisievert

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25 millisievert

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10 millisieverts

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5 millisieverts

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Question 9 of 32

Category: 4.Patient Care Procedures

What type of employee will most likely use a direct reading dosimeter in their line of work?

A dental hygienist

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A dental radiographer

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A dental front desk clerk

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A dental medical records clerk

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Question 10 of 32

Category: 4.Patient Care Procedures

The radiation used to expose panoramic films when using screens is minimized because?

X-ray radiation is absorbed by the cassette itself

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X-ray radiation dissipates when it hits the intensifying screen

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Intensifying screens filter the x-ray radiation and converts it into microwaves

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Intensifying screens use fluorescence to expose the film

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Question 11 of 32

Category: 4.Patient Care Procedures

If a patient feels uncomfortable about the radiation during an x-ray, they should?

Talk to the dentist about the procedure

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Make sure x-rays are absolutely necessary

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Wear all protective gear

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All of the above

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Question 12 of 32

Category: NDAEB WE Mock Exam

Collimators reduce the amount of?

Primary radiation only

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Scattered radiation only

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Primary and scattered radiation

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None of the above

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Question 13 of 32

Category: 4.Patient Care Procedures

Which of the following is a barrier meant to protect the patient?

Mask

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Bibs

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Lab coat

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Uniform

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Question 14 of 32

Category: 4.Patient Care Procedures

What are the uses of film barriers?

Increase the need for wearing additional pairs of gloves

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Increase the preparation and processing time

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Protect film from direct contamination

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Are optional

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Question 15 of 32

Category: 4.Patient Care Procedures

An example of a stochastic effect of dental radiation is?

Nausea

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Vomiting

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Skin cancer

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Skin burns

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Question 16 of 32

Category: 4.Patient Care Procedures

If a patient has been exposed to radiation, the long term effects may not show up for?

Minutes

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Hours

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Days

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Years

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Question 17 of 32

Category: NDAEB WE Mock Exam

A radiation contingency or emergency plan should contain all of the following information except for?

Equipment manufacturer information

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Emergency contact information

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Safety procedures

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Personnel records

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Question 18 of 32

Category: 4.Patient Care Procedures

The tube housing to an x-ray machine breaks while an operator is moving the tube. A patient was not present in the x-ray room. Since the equipment is old, radiation exposure is a concern. The dental operator was not wearing a dosimeter so the appropriate course of action would be?

Recommend the operator have a dose assessment conducted

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Repair the equipment without addressing the operators exposure

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Require all personnel in the office receive dose assessments

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Quickly restore the equipment so the clinic can meet its workload

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Question 19 of 32

Category: 4.Patient Care Procedures

The thermoluminescent dosimeter is designed to be used how many times?

Unlimited times

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Three

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One

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Ten

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Question 20 of 32

Category: 4.Patient Care Procedures

Record keeping has proven that operators who follow proper safety precautions?

Are exposed to high levels of radiation

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Are exposed to relatively low levels of radiation

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Are sick most of the time

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Can work as an operator for 5 years or less safely

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Question 21 of 32

Category: 4.Patient Care Procedures

A young female patient indicates she is breastfeeding. For this patient, dental x-rays?

Are safe to perform

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Need to be delayed for several months

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Are not recommended

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Are only recommended in emergencies

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Question 22 of 32

Category: 4.Patient Care Procedures

Children are more sensitive to radiation than adults because?

They are smaller in size

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They have more sensitive nervous systems

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Their sensitive immune systems

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Their cells are more rapidly dividing

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Question 23 of 32

Category: 4.Patient Care Procedures

Which of the following safety measures applies to dental personnel?

Use of lead aprons

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Use of dosimetry badges

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Film screen combinations

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Use of thyroid collars

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Question 24 of 32

Category: 4.Patient Care Procedures

Personal protective equipment, such as lead aprons, are said to reduce at least ______ of radiation exposure in employees.

80 percent

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50 percent

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25 percent

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100 percent

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Question 25 of 32

Category: 4.Patient Care Procedures

Radiation exposure in the dental office compared to everyday life is?

Nonexistent

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Deadly

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Low

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10X higher than the recommended dose

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Question 26 of 32

Category: 4.Patient Care Procedures

Which of the following is not a method of reducing radiation exposure?

Running faster between shots

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Minimizing exposure time

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Using a protective shield

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Increasing the distance from the x-ray machine

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Question 27 of 32

Category: 4.Patient Care Procedures

Dental assistants can effectively reduce the amount of radiation their patients receive by?

Limiting the beam to a direct and small area of the patient

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Moving the beam around during the x-ray

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Giving the patient a dosimeter

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Using a slow speed

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Question 28 of 32

Category: 4.Patient Care Procedures

Why is intercepting radiation by providing wall shields so necessary in dental clinics? Because

The x-ray beam is not always fully absorbed by the patient

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The x-ray equipment is emits large amounts of radiation when not in use

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The processing equipment produces radiation

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Exposed film may also carry radiation

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Question 29 of 32

Category: 4.Patient Care Procedures

While the patient is being exposed for an x-ray of the right molars, the radiographer stands six feet away to avoid what?

Bodily fluids

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Scatter radiation

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Exposed germs

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Making excessive noises

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Question 30 of 32

Category: 4.Patient Care Procedures

All of the following are reasons front office staff should be positioned away from radiography equipment except for?

The primary beam travels

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Scatter radiation bounces off of walls and floors

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They are subject to cumulative radiation exposure

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To maintain the privacy of the x-ray area

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Question 31 of 32

Category: 4.Patient Care Procedures

If a dental patient comes in to the office that has had radiation treatment for either neck or head cancer, dental x-ray’s can be performed

At no time

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Safely because of the low dose of radiation

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At a high risk

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Every five years

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Question 32 of 32

Category: 4.Patient Care Procedures

Intensifying screens are used to?

Lessen exposure time

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Increase exposure time

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Filter out X-rays from the primary beam

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Absorb scatter radiation

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NDAEB 5.4 Radiation Safety Part 1

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