✨DH103 Dental Radiology quiz#1 Module 2

Recommendations concerning gloves would fall under which of the following categories of infection control practices that directly relate to dental imaging procedures?

A.Personal protective equipment

B.Hand washing and care of hands

C.Sterilization or disinfection of instruments

D.Cleaning and disinfection of dental unit and environmental surfaces

A.Personal protective equipment

Which of the following statements is true of the receptor holder?

A.It is used to align an extraoral dental x-ray receptor.

B.It requires the patient to stabilize the receptor in the mouth.

C.It is required when using the intraoral paralleling technique.

D.It is required when using the intraoral bisecting technique.

C.It is required when using the intraoral paralleling technique.

An oral examination limits the practitioner to knowledge of what is seen clinically. Dental images allow the practitioner to see many conditions that are not apparent clinically.

A.Both statements are true.

B.Both statements are false.

C.The first statement is true; the second statement is false.

D.The first statement is false; the second statement is true.

A.Both statements are true.

Infection control is critical in your dental operatory because pathogens can be transmitted easily through which of the following1. your patient to you.2. you to your patient.3. from one patient to another patient.

A.1, 2, 3

B.1, 3

C.2, 3

D.1, 2

A.1, 2, 3

Added filtration in the dental x-ray tubehead

A.refers to the placement of tungsten discs in the path of the x-ray beam between the collimator and the tubehead seal.

B.filters out shorter-wavelength x-rays from the x-ray beam.

C.results in a lower-energy beam.

D.results in a more penetrating useful beam.

D.results in a more penetrating useful beam.

The "Guidelines for Prescribing Dental Radiographs" state that

A.Dentulous adult recall patients at increased risk for caries should have posterior bite-wing examinations at 12- to 24-month intervals.

B.x-rays are not taken on patients who are pregnant unless absolutely necessary.

C.edentulous adults should have posterior bite-wing examinations at 12- to 36-month intervals.

D.Dentulous adult recall patients who are not at increased risk for caries should have posterior bite-wing examinations at 24- to 36-month intervals.

D. Dentulous adult recall patients who are not at increased risk for caries should have posterior bite-wing examinations at 24- to 36-month intervals.

In order to avoid the primary beam while taking dental images, you should stand at a ____-degree to ____-degree angle to the beam.

A.0; 45

B.45; 90

C.90; 135

D.135; 180

C.90; 135

Through the use of dental images, the dental radiographer can detect ________ that cannot be detected clinically.1. diseases2. lesions3. conditions of teeth and bones

A.1, 2, 3

B.1, 2

C.2, 3

D.3 only

A.1, 2, 3

Which of the following should you do prior to taking x-rays to protect your patient from radiation exposure?

A.Proper film processing

B.Proper prescribing of radiographs

C.A lead apron

D.A thyroid collar

B.Proper prescribing of radiographs

A beam alignment device can be used to help the dental radiographer position the PID in relation to the _____________ and the receptor.

A.control panel

B.extension arm

C.collimator

D.tooth

D.tooth

In dental imaging, no __________________ are used.1. critical instruments2. semicritical instruments3. noncritical instruments

A.1, 2, 3

B.1, 2

C.3 only

D.1 only

D.1 only

Which of the following are considered to be semicritical instruments?

A.The exposure button

B.The x-ray control panel

C.The lead apron

D.Receptor-holding devices

D.Receptor-holding devices

You have your patient in the chair, you have placed the receptor in your patient's mouth, and you have positioned the position-indicating device. Which of the following should you do next to take the x-rays?

A.Turn on the on-off switch.

B.Push the exposure button.

C.Turn on the exposure light.

D.Adjust the control devices.

B.Push the exposure button.

When dental images are properly prescribed, exposed, and processed, the benefit of disease detection ____________ the risk of small doses of x-radiation.

A.does not outweigh

B.is considered equal

C.slightly outweighs

D.far outweighs

D.far outweighs

On some dental x-ray machines, only the ____________ can be altered; the other parameters are preset by the manufacturer.

A.kilovoltage

B.exposure time

C.PID length

D.milliamperage

B.exposure time

According to the text, __________ is one of the most important uses of dental images.

A.habitual rote frequency

B.detection

C.maintaining a routine

D.insurance verification

B.detection

Dental images are a(n) _______________ comprehensive patient care.

A.adjunct to

B.necessary component of

C.option for

D.supplement to

B.necessary component of

Antiseptic is

A.the absence of pathogens, or disease-causing microorganisms.

B.a substance that inhibits the growth of bacteria.

C.the use of a chemical or physical procedure to inhibit or destroy pathogens.

D.the act of sterilizing.

B.a substance that inhibits the growth of bacteria.

Preparation of supplies and equipment involves sterilizing which of the following items?

A.Film

B.Film-holding devices

C.Lead apron

D.PID

B.Film-holding devices

(1) You can use dental images to help educate your patient on his dental caries and periodontal disease. (2) You can also use dental images to help your patient see a picture of common conditions that cannot be seen clinically. These include cysts, extra teeth, and retained roots.

A.Both statements are true.

B.Both statements are false.

C.The first statement is true, and the second statement is false.

D.The first statement is false, and the second statement is true.

A.Both statements are true.

The collimator ____________

A.is always round.

B.restricts the size and shape of the x-ray beam.

C.is a solid piece of aluminum.

D.is fitted within the copper stem beneath the molybdenum cup.

B.restricts the size and shape of the x-ray beam.

(1) It is your responsibility to maintain competence in taking dental images; taking continuing education courses is one example. (2) You should always do your best to properly position and expose receptors in a manner that is accurate, time efficient, and comfortable for your patient.

A.Both statements are true.

B.Both statements are false.

C.The first statement is true, and the second statement is false.

D.The first statement is false, and the second statement is true.

A.Both statements are true.

(1) Highly resistant bacterial and mycotic (fungal) spores are not killed during disinfection procedures; (2) however, highly resistant bacterial and mycotic spores are killed during sterilization.

A.Both statements are true.

B.Both statements are false.

C.The first statement is true; the second statement is false.

D.The first statement is false; the second statement is true.

A.Both statements are true.

The position-indicating device (PID) is an extension of the

A.tubehead.

B.extension arm.

C.control panel.

D.exposure button.

A.tubehead.

The thyroid collar

A.is recommended for all intraoral exposures.

B.is recommended for all extraoral exposures.

C.is placed over the patient's chest and lap and extends to protect the thyroid.

D.is recommended for both intraoral and extraoral exposures.

A.is recommended for all intraoral exposures.

Pathogens are

A.any microorganisms.

B.bacteria but not viruses.

C.viruses but not bacteria.

D.microorganisms capable of causing disease.

D.microorganisms capable of causing disease.

The Rinn XCP is a

A.beam alignment device.

B.Styrofoam bite-block.

C.snap-on metal collimating device.

D.Uni-bite.

A.beam alignment device.

Another term for infection control is __________, which means the absence of pathogens, or disease-causing microorganisms.

A.antiseptic

B.antibiotic

C.antiinfective

D.asepsis

D.asepsis

Critical instruments are defined as instruments

A.that are used to penetrate soft tissue or bone.

B.that contact but do not penetrate soft tissue.

C.that contact but do not penetrate bone.

D.or devices that do not come in contact with mucous membranes.

A.that are used to penetrate soft tissue or bone.

State and federal laws require that dental x-ray machines operating above 70 kVp have a minimum total (inherent plus added filtration) of ____ mm of aluminum filtration.

A.1.5

B.2.0

C.2.5

D.5.0

C.2.5

There are three conditions that must be present for an infection to occur. Which of the following conditions is a necessary component for an infection to occur?

A.Small amounts of the infectious disease with low infectivity

B.A host that is not vulnerable to infection

C.A way for the infectious disease to enter the host

D.An aseptic environment

C.A way for the infectious disease to enter the host

The ALARA concept states that all radiation must be kept

A.as long as readily achievable.

B.as low as reasonably allowable.

C.as low as reasonably achievable.

D.as long as reliably achievable.

C.as low as reasonably achievable.

Which of the following should you do prior to taking x-rays to protect your patient from radiation exposure?

A.Proper film processing

B.Proper prescribing of radiographs

C.A lead apron

D.A thyroid collar

B.Proper prescribing of radiographs

The "Guidelines for Prescribing Dental Radiographs" state that

A.dentulous adult recall patients at increased risk for caries should have posterior bite-wing examinations at 12- to 24-month intervals.

B.x-rays are not taken on patients who are pregnant unless absolutely necessary.

C.edentulous adults should have posterior bite-wing examinations at 12- to 36-month intervals.

D.dentulous adult recall patients who are not at increased risk for caries should have posterior bite-wing examinations at 24- to 36-month intervals.

D.dentulous adult recall patients who are not at increased risk for caries should have posterior bite-wing examinations at 24- to 36-month intervals.

Inherent filtration in the dental x-ray tubehead

A.includes filtration that takes place when the primary beam passes through the glass window of the x-ray tube, the insulating oil, and the tubehead seal.

B.includes the placement of aluminum discs in the path of the x-ray beam between the collimator and the tubehead seal.

C.alone meets the standards regulated by state and federal law.

D.is equivalent to approximately 5.0 mm of aluminum.

A.includes filtration that takes place when the primary beam passes through the glass window of the x-ray tube, the insulating oil, and the tubehead seal.

Added filtration in the dental x-ray tubehead

A.refers to the placement of tungsten discs in the path of the x-ray beam between the collimator and the tubehead seal.

B.filters out shorter-wavelength x-rays from the x-ray beam.

C.results in a lower-energy beam.

D.results in a more penetrating useful beam.

D.results in a more penetrating useful beam.

State and federal laws require that dental x-ray machines operating above 70 kVp have a minimum total (inherent plus added filtration) of ____ mm of aluminum filtration.

A.1.5

B.2.0

C.2.5

D.5.0

C.2.5

A circular collimator produces a cone-shaped beam that is __________ inch(es) in diameter.

A.

C.2.75

A rectangular collimator

A.restricts the beam 3 times more than a circular collimator.

B.restricts the beam less than a circular collimator.

C.decreases patient exposure considerably.

D.is considerably larger than a size 2 intraoral receptor.

C.decreases patient exposure considerably.

Which of the following types of position-indicating devices (PIDs) produces scatter radiation?

A.Rectangular

B.Conical

C.Round

D.Square

B.Conical

Which type of PID would be most effective in reducing patient exposure?

A.Conical

B.A 16-inch round PID

C.An 8-inch rectangular PID

D.A 16-inch rectangular PID

D.A 16-inch rectangular PID

Which of the following can you do after x-ray receptor exposure to reduce(s) the amount of x-radiation your patient receives?

A.Proper placement of the lead apron

B.Proper image retrieval

C.Proper instrument technique

D.Selecting proper exposure settings

B.Proper image retrieval

According to the current recommendations (2003) of the National Council on Radiation Protection and Measurements, the current MPD for occupationally exposed persons is ___________/year.

A.500 millirem

B.5.0 rem

C.50 rem

D.5000 rem

B.5.0 rem

The ALARA concept states that all radiation must be kept

A.as long as readily achievable.

B.as low as reasonably allowable.

C.as low as reasonably achievable.

D.as long as reliably achievable.

C.as low as reasonably achievable.

You are 36 years old. What is your cumulative occupational dose recommended by the National Council on Radiation Protection and Measurements (NCRP)?

A.360 millirems

B.360 mSv

C.180 millirems

D.180 mSv

B.360 mSv

Your patient is a 5-year-old boy who you have been seeing since he was 3 years old. He is always eating candy and drinking cola beverages. Six months ago he had A, J, and T restored. One year ago he had B, I, and L restored. Which of the following should you do regarding taking radiographs?

A.Take bite-wings and occlusal radiograph today.

B.Insurance covers bite-wings once a year, take the dental images in 6 months.

C.Re-evaluate in 1 year for the need for dental images.

D.Dental images are taken every 2 years.

A.Take bite-wings and occlusal radiograph today.

Your next patient is a 35-year-old man who you have been seeing for the past 10 years. The only treatment he has needed since coming to the dental practice has been his 6-month "prophys." He has no periodontal issues and is on a 6-month recall cycle. You last took four bite-wing images 1 year ago. Which of the following should you do?

A.Take bite-wings during this appointment.

B.Take the images in 6 months.

C.Take the images in 1 to 2 years.

D.No images will be needed for 5 years.

C.Take the images in 1 to 2 years.

_________________ regulate(s) the manufacture and installation of dental x-ray equipment.

A.The federal government

B.State governments

C.Local governments

D.Municipal governments

A.The federal government

The position-indicating device (PID) is an extension of the

A.tubehead.

B.extension arm.

C.control panel.

D.exposure button.

A.tubehead.

The _____________ allow(s) for positioning of the tubehead.

A.control devices

B.extension arm

C.control panel

D.exposure button

B.extension arm

A _____________ eliminates the need for the patient to stabilize the receptor.

A.PID (position-indicating device)

B.receptor holder

C.control panel

D.beam alignment device

B.receptor holder

A beam alignment device can be used to help the dental radiographer position the PID in relation to the _____________ and the receptor.

A.control panel

B.extension arm

C.collimator

D.tooth

D.tooth

When should you avoid taking retakes?

A.Whenever it is convenient because the dose is so low

B.Only if the patient is uncomfortable with exposure

C.Only if older (pre-1975) equipment is used

D.At all times

D.At all times

(1) It is your responsibility to maintain competence in taking dental images; taking continuing education courses is one example. (2) You should always do your best to properly position and expose receptors in a manner that is accurate, time efficient, and comfortable for your patient.

A.Both statements are true.

B.Both statements are false.

C.The first statement is true, and the second statement is false.

D.The first statement is false, and the second statement is true.

A.Both statements are true.

Infection control is critical in your dental operatory because pathogens can be transmitted easily through which of the following1. your patient to you.2. you to your patient.3. from one patient to another patient.

A.1, 2, 3

B.1, 3

C.2, 3

D.1, 2

A.1, 2, 3

Which of the following viruses may be present in oral secretions?1. Cytomegalovirus2. Hepatitis B virus3. Herpes simplex virus4. Human immunodeficiency virus

A.1, 2, 3, 4

B.2, 3, 4

C.1, 2, 3

D.2, 4

A.1, 2, 3, 4

In dental imaging, no __________________ are used.1. critical instruments2. semicritical instruments3. noncritical instruments

A.1, 2, 3

B.1, 2

C.3 only

D.1 only

D.1 only

Which of the following should you do to prepare your treatment room prior to taking a dental image?

A.Wipe with an antiseptic.

B.Follow infection control procedures.

C.Sterilize critical instruments.

D.Wipe with a low-level disinfectant

B.Follow infection control procedures.

Covering exposed surfaces with disposable materials ____________ adequate protection ____________ the need for surface cleaning and disinfection between patients.

A.provides; while eliminating

(Everyone will receive for this question.

Per the book, plastic covering "eliminates" the need for disinfecting. In clinic we do both.)

B.provides; but does not eliminate

C.does not provide; but does eliminate

D.neither provides; nor eliminates

A.provides; while eliminating

There are three conditions that must be present for an infection to occur. Which of the following conditions is a necessary component for an infection to occur?

A.Small amounts of the infectious disease with low infectivity

B.A host that is not vulnerable to infection

C.A way for the infectious disease to enter the host

D.An aseptic environment

C.A way for the infectious disease to enter the host