DHYG 1304 EXAM 3 QUESTIONS & ANSWERS
For the infection to occur, each of the following conditions must be present except one.
Which one is the exception? - Answer -an acceptable barrier
Which of the following will correct an elongated image? - Answer -increasing the
vertical angulation
To break the chain of infection, each of the following must be considered except one.
Which one is the exception? - Answer -make contact with contaminated objects or
instruments
Comparing the paralleling technique with the bisecting technique, which of the following
statements is correct? - Answer -proficiency should be achieved in both technique
T/F: The bisecting technique is applied when the image receptor cannot be placed
parallel to the long axis of the teeth. - Answer -True
Which of the following is not an advantage of the paralleling technique? - Answer -it is
ideal for positioning radiographs for children
Effective verbal communication begins with: - Answer -facing the patient directly,
maintaining eye contact, and giving specific directions
Which of the following statements is false?
-size 2 image receptors are best for posterior periapical regions
-size 1 image receptor is the best fit for the canine region
-size 3 image receptor is used for occlusal radiograph
-the long dimension of the image receptor is positioned horizontally in the posterior
periapical regions - Answer -size 3 image receptor is used for occlusal radiographs
T/F: The Consumer-Patient Health and Safety Act provides patients with more control
over how their personal health information is used and disclosed. - Answer -False
T/F: The purpose of the periapical examination is to record the crowns and alveolar
bone crests of the teeth in both arches on one radiograph. - Answer -False
T/F: The periapical examination is sometimes referred to as an interproximal
radiograph. - Answer -False
T/F: Dental radiographs must be retained by the dentist for 10 years after the patient
leaves the practice. - Answer -False
T/F: All states have certification requirements for personnel taking dental radiographs. -
Answer -False
, Lead aprons are classified as _____ objects - Answer -noncritical
The principles of the paralleling technique include each of the following except one.
Which one is the exception?
-the central ray of the x-ray beam is directed perpendicular to the tooth and to the image
receptor
-parallel placement of the image receptor is accomplished using an image receptor
holder
-the image receptor is placed parallel to the long axis of the tooth of interest
-the central ray of the x-ray beam is directed at a plane halfway between the long axis of
the tooth and the long axis of the image receptor - Answer -the central ray of the x-ray
beam is directed at a plane halfway between the long axis of the tooth and the long axis
of the image receptor
To give informed consent, each of the following must be explained to the patient except
one. Which one is the exception?
-the risks and benefits of taking radiographs
-the purpose of taking radiographs
-the possible risks of refusing radiographs
-how the radiographs will be taken - Answer -how the radiographs will be taken
T/F: Good patient relations can reduce the risk of possible legal action. - Answer -True
Which of these is not a disadvantage of the bisecting technique?
-image receptor positioning is difficult for patients with small mouths
-estimating the location of the imaginary bisecting may be difficult
-adjacent structures are often superimposed
-it produces images with dimension distortion - Answer -image receptor positioning is
difficult for patients with small mouths
Anterior periapical radiographs should be positioned in the oral cavity with the long
dimension _____, and posterior periapical radiographs should be positioned in the oral
cavity with the long dimension _____ - Answer --vertical
-horizontal
The presence of each of the following conditions may indicate using the bisecting
technique instead of the paralleling technique except one. Which one is the exception?
-a class II maloclussion
-a very low or shallow palatal vault
-a large palatal or mandibular tori
-an edentulous region - Answer -class II malocclusion
T/F: A longer (12 or 16 inch) PID is better suited to the bisecting technique. - Answer -
False
For the infection to occur, each of the following conditions must be present except one.
Which one is the exception? - Answer -an acceptable barrier
Which of the following will correct an elongated image? - Answer -increasing the
vertical angulation
To break the chain of infection, each of the following must be considered except one.
Which one is the exception? - Answer -make contact with contaminated objects or
instruments
Comparing the paralleling technique with the bisecting technique, which of the following
statements is correct? - Answer -proficiency should be achieved in both technique
T/F: The bisecting technique is applied when the image receptor cannot be placed
parallel to the long axis of the teeth. - Answer -True
Which of the following is not an advantage of the paralleling technique? - Answer -it is
ideal for positioning radiographs for children
Effective verbal communication begins with: - Answer -facing the patient directly,
maintaining eye contact, and giving specific directions
Which of the following statements is false?
-size 2 image receptors are best for posterior periapical regions
-size 1 image receptor is the best fit for the canine region
-size 3 image receptor is used for occlusal radiograph
-the long dimension of the image receptor is positioned horizontally in the posterior
periapical regions - Answer -size 3 image receptor is used for occlusal radiographs
T/F: The Consumer-Patient Health and Safety Act provides patients with more control
over how their personal health information is used and disclosed. - Answer -False
T/F: The purpose of the periapical examination is to record the crowns and alveolar
bone crests of the teeth in both arches on one radiograph. - Answer -False
T/F: The periapical examination is sometimes referred to as an interproximal
radiograph. - Answer -False
T/F: Dental radiographs must be retained by the dentist for 10 years after the patient
leaves the practice. - Answer -False
T/F: All states have certification requirements for personnel taking dental radiographs. -
Answer -False
, Lead aprons are classified as _____ objects - Answer -noncritical
The principles of the paralleling technique include each of the following except one.
Which one is the exception?
-the central ray of the x-ray beam is directed perpendicular to the tooth and to the image
receptor
-parallel placement of the image receptor is accomplished using an image receptor
holder
-the image receptor is placed parallel to the long axis of the tooth of interest
-the central ray of the x-ray beam is directed at a plane halfway between the long axis of
the tooth and the long axis of the image receptor - Answer -the central ray of the x-ray
beam is directed at a plane halfway between the long axis of the tooth and the long axis
of the image receptor
To give informed consent, each of the following must be explained to the patient except
one. Which one is the exception?
-the risks and benefits of taking radiographs
-the purpose of taking radiographs
-the possible risks of refusing radiographs
-how the radiographs will be taken - Answer -how the radiographs will be taken
T/F: Good patient relations can reduce the risk of possible legal action. - Answer -True
Which of these is not a disadvantage of the bisecting technique?
-image receptor positioning is difficult for patients with small mouths
-estimating the location of the imaginary bisecting may be difficult
-adjacent structures are often superimposed
-it produces images with dimension distortion - Answer -image receptor positioning is
difficult for patients with small mouths
Anterior periapical radiographs should be positioned in the oral cavity with the long
dimension _____, and posterior periapical radiographs should be positioned in the oral
cavity with the long dimension _____ - Answer --vertical
-horizontal
The presence of each of the following conditions may indicate using the bisecting
technique instead of the paralleling technique except one. Which one is the exception?
-a class II maloclussion
-a very low or shallow palatal vault
-a large palatal or mandibular tori
-an edentulous region - Answer -class II malocclusion
T/F: A longer (12 or 16 inch) PID is better suited to the bisecting technique. - Answer -
False
